Thank you! 25 years as a general automotive mech with a bent towards Euro imports, I had just enough diesel info to keep a VW truck or MB wagon running ;) NOW due to some inherited family issues, I am the proud(?) owner of a 2006 C7 in a box truck with 200K on the clock. Two hours of watching your vids, I have learned more than than I have been able to find in three weeks! As a certain actor sed: "I'll be back!" Thanx again!
@@randygonzalez6250 that former governor really should've retired after his acting career started declining, as much as i admire him for his bodybuilding and his acting, his politics are beyond me
Thanks for all you do for the wrench turners. I am a mechanic for morbark and I used your videos for reference for CAT engine service in our shop. Unfortunately, we just do fluids and basic stuff to engines, we dont have the time or manpower to do full fledged engine work. Thanks again man!
I'm a maint tech for a deere dealership. We see many trucks on the hook. Friday it was the fish hatchery crew, so it's great to have fact based insight toward their problem.Thanks for posting. M.
Love your content and how thorough you are yet speaking to a basic level of knowledge! Please keep the vids coming! I collect busses and you have saved me a lot of time!
Thanks for the info, I am committed to a purchase of a 2008 Ford 650 and to my surprise it has a CAT engine. This info was not shared with me online, before I took the hour long drive to lay eyes on the truck. That reason was! the dealership does not have the authority to sale a commercial vehicles, I assume insurance or some other governing in there industry, however I test drove the truck and it ran fine although it seems to have an automatic engine break whenever I let off the accelerator the engine would slow itself down. But it is a beast of a truck! This is what brings me here. It is a AS IS! sale and there mechanics have no clue about this truck and they normally offer an inspection /diagnosis IN HOUSE. and Like you would imagine things got all slippery during the closing stages of the sale and I felt like I may be getting screwed. asking price $ 25,597. I got them to $24,497. Whata re the first things I should do with this truck to insure it's road worthy and I made a good purchase???
A couple of the oldest trucks in our fleet have these engines, and I just starting pulling an air compressor on one of them. Never really done this big of a job (at least in the engine bay) so wish me luck.
I enjoy all your videos and I want to thank you for for sharing your knowledge you make everything clear and I thank you again and take care and God bless
I find your videos very helpful for my understanding, I myself am an apprentice with Hastings Deering Cat® from Papua new guinea in the pacific. But we come under an Australian region dealership. Im glad to know you make these sorts of videos. Please continue the great videos , really is good stuff.
93-1 got a fuel pressure voltage high which indicates an open circuit. Well your video guided me to the back which has a fuel pressure sensor on the left side of the regulator that was unplugged.
I have cimilar engine.. Cat c7 2007. Freightliner.. Nocking noise sometimes Specially when taking off stepping on gas Or on hight speed verly Did valve adjustment, did replaced all 6 injectors. ( No trim files were programmed) Any ideas ,,
1:15 if the fuel pressure regulator went bad would that cause an injector skip? I've been chasing an injector skip on cylinder 1 for a while now in my 2008 ford f650 tow truck
I had the fan hub assembly seize while driving through AZ. The belt shredded and the fan fell off. I was lucky it didn't also destroy my year old radiator and CAC, but it still cost almost $3K when it was all done.
So glad for the information. I really thought my motorhome had a great engine. After this video,I am convinced it is not. I gather the oil changes are most important. I would think an oil filter between the huei pump and the injectors would be a good idea.
Weve been trying to narrow down a dead #5 cyc on a bus, now im thinking maybe something failed with the lifters. I didn't know that was a problem we've tried everything else so maybe this is the next step
I worked on a 963 with a c7 bullshit spot for the side motor mounts had to either remove the cab or get a bunch of old service manuals to use as a booster so I could tighten it
Love the videos, currently going to community college in Oregon learning diesel mechanics. On to my 2nd term. Thanks for the tips. My school has a partnership with snap-on where if you are a student you get about 50% off on all their tools for the 2 years you are in the program. Time to stock up on tools haha
I have a 3126 that has a air intake heater. The relay feeding power to the preheater is good. What tells the relay to turn on. It's in a 1998 chevy truck
I am having starting problems with a 3208 CAT, starting with easy start but not on it's own, trying to find glow plugs or heating element but can't see them anywhere, DOES IT HAVE THEM ?
Love your video's, I've watch these when i had a 3126 and I'm back because i believe i have a C7 in my 2006 Tiffen 40 ft motorhome. last week it was on it's way to Alabama from Philly PA, ran like a champ down the the Virginia North Carolina border and then it went bad. I wasn't there, a buddy of mine had it, he said it started blowing some black smoke, had a small vibration and then shut down, would crank and is now in a yard in NC. After watching your video i'm curious if the high pressure oil system could lock things up without really damaging the lower portion of the motor. I'm feeling like this is a blown motor but i am very limited on my diesel knowledge, if it was a gas motor i would know a little more, but i'm looking for some very educated info. My 2nd question would be, if this is a blown motor and i need to replace this do i have to replace it with a C7 or could i put another Cat motor in there instead. I really appreciate any help or advise you might have because I have to fix this, the motorhome is very nice with the exception on this issue.
well I stalled out the other night and it wouldn't start. I assumed it was filters. changed both and when I prime it I'm not getting resistance as it should. below the heui pump is where I'm hearing a hissing like noise. when I get it to prime at all it will fire up and run until it loses fuel I suppose. I'm obviously not a mechanic but good with working on my vehicles. had it towed to my house with hopes it was filters. the water separator was disgusting with what looked like mud or rust. I just bought the truck and few months ago. thank you very much for the response and rest assured I will be making a contribution once I know how!
+jeffrey katits You should email me at AdeptApe@yahoo.com It's easier to respond to comments that way. If you had rust in your filter, inspect those fuel tanks for deterioration. I would hook up a fuel line out of a bucket to isolate your suction side. You should watch my fuel system troubleshooting video if you haven't yet.
I'm doing a new exhaust seat number 5 cylinder. For some reason to drop the valve seat. Chewed up the top of the piston a few scratches in the cylinder. Trying to locate maybe a oversized piston for that cylinder. Does anybody know if they sell oversize Pistons?
Does the computer make a difference if it’s a c7 or a high horse power c7 cause of the electronic waste gate actuator and if it is if I swap computers do I need to swap the engine harness as well?
ok....subscribed! been watching your videos for 3 nights now! my 2005 f650 rollback is down. was driving down the road accelerating and went dead....engine just shut down...coasting along just windmilling. towed back to shop started checking simple stuff first....found the fuel in the tank was dark, couldn't even see light through it. did some research and found this could happen because of bad o-rings on the injectors. changed O-rings reinstalled injectors...still no start! pumping primer pump and heard fuel running back into tank...thought fuel pressure regulator was stuck open...replaced it and still no start! disconnected fuel line from primary filter to transfer pump, put line in a jug full of clean diesel...primed about 20 times ,still no start. hooked up fuel pressure gauge , pumped primer about 20 times again, builds pressure up to about 50 pounds with primer and then bleeds down....can hear fuel running back to tank. crank engine, no pressure...thinking transfer pump...any ideas before I buy a new transfer pump and should I change the heui and the transfer pump together? oh and I had read 2 codes on the check engine flashing light....26 and 39
+James Conarton Alright, thanks for watching. So the oil consumption was probably the HEUI oil getting pushed into the fuel tank and then getting burned. So hopefully by getting the injector seals changed fixed that. If you aren't building any fuel pressure, you've already change the regulator and ran it out of the bucket then it sounds like the transfer pump is the next on the list. The transfer pump can be changed without changing the HEUI pump, but you'll want to remove the HEUI pump off the engine to do it. The HEUI pump is about 5x as expensive as the transfer pump, so if the HEUI pump is okay I would definitely reuse it. The transfer pump has a special bolt that comes with it to hold the pump together when you change it so be careful. Let me know what you find. Is the tach showing a signal?
ok update...the bolt on the front was almost all the way out and the gear was hanging off.! is this common and do you think this is our only problem? do we just reinstall it or is there a special process? and also thank you for the quick response!
I have a 2008 f650 with a cat c7s engine that will not manually regen, the cat dealership says it's the ard head, but my question is could it be the fuel supply going to the ard head. When it starts the manual regen it will try for a few minutes before it fails. There is an ard after treatment nozzle that was corroded and it fell off when checking it. Would it make sense that the other lines could be plugged or corroded and not allowing the regen process to complete?
I have a very funny problem with the c7's that we have at my bus yard they are acert engines and they all eventually below the oil cap off and all the oil out of the crankcase is this a common problem and if so what do we do to fix it so far we have been zip tying them in place
+Thomas Santilli That sounds more messy than funny. Check the crankcase disposal line running from the exhaust to the crankcase breather on the valve cover base. The line that threads to the exhaust gets plugged with soot and closes, which causes the blowby to go sky high. Check my video on using an air hammer to loosen fittings, it's one of my first videos, it'll show you which line I'm talking about. That would be where I check first. Let me know what you find.
+Thomas Santilli It isn't the tube, it's the fitting itself going into the exhaust, was that clear? I should have specified, if it is clear check the flapper valve in the valve cover base to see if it cracked.
Hello sir I have a c7 in my bucket truck today it would not start after showing up to a job it cranks and everything like normal we sprayed a little starting fluid and it fired right up and ran like normal no issues just doesnt start on it's own idk if you may know what the problem is any help is greatly appreciated
Hi I’ve a 2003 motor home with a C7 cat 300 hp diesel pusher, on a freight liner chassis. But I stop cranking the engine few years back and it only has 14,000 Miles, but now it won’t fired up. Any suggestions
Keep coming back to your channel for more!! I have a question Got a c7 in my Sterling flatbed, power steering fluid god dumped out on the way back from a 30 mile drive. Pouring out of the reservoir itself. Can’t find any leaks, I put some pressure (10psi) to the reservoir itself to see if any vacuum hoses would leak but still nothing. It has the hydra boost brake booster so the brakes are tied into the power steering system. When I turn the steering wheel (with front end jacked up) left, the fluid level goes down, then turn right and it goes up in the reservoir. What makes it super pressurized is when I hit the brake pedal, almost instantly it’ll fill the reservoir and piss out of the cap. Thought the PS filter was clogged, changed it out and still pouring fluid. I have 3 things that are pretty pricey that I could replace: Power steering pump on the engine Brake booster on the truck Or steering gear. I’ve been doing some reading and apparently all of my symptoms point to the power steering pump itself. I’m planning on going to the CAT dealer in the morning but just wanted a second opinion. Thanks for all of the videos man I literally chop veggies/bbq to them when I make food lol even the ones that don’t directly apply to me I call it “learning ahead”
I have a rear engine bluebird, c7. What oil should I use on this engine. Am I reading it correctly, I'm pretty sure it said 10W30..?? All the videos I see guys are using 15W40..help!!!
my 3126 hydro locked. pressurized the coolant system and no drop . i pulled the injectors and it spun over. pulled the head just not sure why it hydro locked . injector cups? head gasket?
I believe it was water from the coolant system, head gasket looks ok to me but I will get an experienced opinion. It was using more and more coolant with no signs of a leaks on the ground
hopefully ill be getting a cabover 3406b next week but I still need to get this 3126 fixed , I really liked the truck and thought it would last forever but now i want this engine fixed and sold
I have a 3126B on my F-350 truck, I replace the inyectors seals because I have oil into the fuel system and after I replace the seals it still passing oil, should I have to replace inyectors cups? What is the chance to have a head crack on this engines?
Sir I have questions? C7 caterpillar engine Tamrock drill ranger 800.. new engine overhaul already.. when coolant temperature getting 150f the coolant coming out to radiator reservoir line why is like that? Thanks
Did the BAE military JLTVs in the 2007 to 9 range get the screwy C7 with the S or were they the good old fashioned ones? It's says they were 2007 EPA compliant. Would hope with their multifuel requirement the defense department would get the engines without the emissions noose. Been web searching and I'm not smart enough to find it.
I've got a 2006 f750 with the c7 in it. I'm leaking power steering fluid and breaking is stiffening up. Do you think I can refill the fluid reservoir and get my truck to a shop 15 miles away?
+MrHorhell Depends on how bad the leak is, as long as you can keep fluid in it you should be able to make it, but if you are losing brakes it is safest to have it towed or fixed.
I have a c7 in an f650 pickup and having a fuel issue. when I use the manual primer I hear almost a hissing noise (air leak?) in the heui pump. any ideas
+jeffrey katits Hmmm, will the transfer pump runs off the back of the HEUI pump, so maybe you have a fitting or hose leaking on the inlet of the transfer pump. Are you losing prime?
This is fantastic!!! Thank you so much for this info. I have a cat year 2000 3126 and it runs great. I'm looking at a 2005 C7. I've seen this video and is there anyway in inspecting the truck with c7 to see if there are any HEUI problems? Hard cold start, smoke? What can I look for that could be a deal breaker onsite with no tools really? Truck has 150,000.
+n9878f Without a way to communicate with the engine, the best way would be start it when it's cold, look for any stumbling or surging, then run it at different rpms up to operating temperature. You should have them take it to a Dealer that could plug into it and pull any diagnostic codes if there are any. Usually they won't charge anything just to pull codes.
Just came across your video, very helpful We were supposed to buy a RV that was advertised to have a 300 hp Cummins but found out it had the 350hp C7. Should we pass on this MH because of the C7?
Hi, just bought a F750 bucket truck with the C7 ,159k miles. Truck was repossession and had sat in a holding yard for 15 months. Was turned in voluntarily and truck was running and hydraulics/bucket all operating. Getting it towed to my mechanics yard for start up and repair. What are some things to watch out for in a truck sitting this long and not running. Not abused or uncovered just sitting. Any suggestions would be appreciated. Thanks RC
+ralph campisi That's a long time to not start an engine, would probably say to try and tap into the oil rail and pump fresh oil through the engine, then change the oil and filters, dump in fresh fuel, prime the fuel system, probably need new batteries, but other than that you don't need to do anything special.
C7 in a cat 324D Excavator, I have a oil leak, it looks to be coming from behind the engine computer, looks like some sort of inspection plate? Maybe for the push rods? Are those known to leak? I need to remove the computer to really see whats going on, but im kinda just look for some input, or is there something else that might be leaking that im not seeing with computer in place? Engine has 12k hrs on it.
Around my GMC 7500 K to the scanner and he said he had a high oil pressure voltage hi that’s what he has said on the sensor so but I don’t know what’s wrong with you can you recommend something in the video or tell me what to do or where the sensor is located at the video but I can’t
Any chance you could tell why I'd be getting a code 102 07-13 turbo waste gate issue. We applied air pressure to the waste gate and it open and closed. What else should we look for? FYI, I'm getting a buzzer and stop engine and check engine lights when pushing done on the accelerator. 2005 Cat C7 in a Itasca Meridien.
can you help me I have a CAT engine that will not start in warm weather unless you plug the block heaters in but in the cooler weather it will start without the block heaters plugged in wondering if anybody can tell me what may be wrong with this thing no mechanics around here can figure it out
Hi josh, I have 2005 cat c7 in Kenworth t300 with allison automatic transmission. The engine runs good however every time Iam fully stopped in gear, my engine rpm fluctuates between 700-800 rpm. Any Help Would be really appreciated. Thanks
Hi Sir,l have a question regarding to a C7 engine,my friend is selling me truck that has this C7,apparently is loosing oil true the blow pipe,trucks runs but has that problem,can l put a 3126 and replace the C7.?or is not possible? Appreciate your response,thank you !
As the CAT C7 does not have O2 sensors, what sensors does it use to do the same job as the O2 Sensor? Thank you for the wonderful and informative videos. They are an great help.
+W. Simpson An O2 sensor is more of an automotive gas engine sensor than a Diesel engine sensor. Since a gas engine has to run at a nearly constant fuel ratio it needs the sensor to fine tune the ratio. A Diesel on the other hand nearly always runs lean with a wide range fuel to air ratios. This is why a Diesel doesn't need an O2 sensor. There are nitrogen oxide sensors on newer diesels, but they are for testing the SCR catalyst system and egr, but they are not tied with the fuel ratio the same way an O2 sensor is.
I am working on a C7 on a bus and I am getting a active and inactive injector mechanical no response code. Does that call for a injector replacement right off the bat? or should I do the fuel verification test? and other tests that you may recommend???? any and all help that you can give would be greatly appreciated
I have a c7 in my Freightliner and it died on me while I was stopped at a red light. The mechanic first said the cam/timing sensor was bad. They replaced the sensors and it still cranks but wont start. Same issue. Now they are telling me the ECM is bad, I just had a new ECM installed on 11-30-17. Does this sound right?
I wonder why the caterpillar engineers didn't add a second exhaust valve. There's two intake valves and only one exhaust valve. Exhaust valve is a little larger (intake valve is 1.578 vs. 1.697 exhaust. I believe the exhaust valve also opens larger.
all valuable information.......does the C7 have the plastic plugs to keep the gudgeon pin in?.....and is it possible to read error codes without a Cat laptop?
I can really use your help! Bought a Chevy 8500 Dump with a Cat C7 engine 2007 From Baltimore City and I can not find the block heater cord. Is it possible it doesn't have one or am I looking in the wrong areas? Where would it be?
Hello, I hope you can help! I have a 350hp C7 in a motor home that keeps derating from over heating. I've been told that the waste gate is frozen shut. The shop is dicking around with it on the engine with no results. I have friends who had the same problem but theirs was corrected at Cat shop. What is your take on this? My area Cat shop is out of this world $$$$ Help...............
Thank you!
25 years as a general automotive mech with a bent towards Euro imports, I had just enough diesel info to keep a VW truck or MB wagon running ;)
NOW due to some inherited family issues, I am the proud(?) owner of a 2006 C7 in a box truck with 200K on the clock. Two hours of watching your vids, I have learned more than than I have been able to find in three weeks!
As a certain actor sed: "I'll be back!"
Thanx again!
As a certain governor said *"screw your freedom"* lol
@@randygonzalez6250 that former governor really should've retired after his acting career started declining, as much as i admire him for his bodybuilding and his acting, his politics are beyond me
Thank you! I’m going to look at a school bus tomorrow with a C7. This taught me so much.
Thanks for all you do for the wrench turners. I am a mechanic for morbark and I used your videos for reference for CAT engine service in our shop. Unfortunately, we just do fluids and basic stuff to engines, we dont have the time or manpower to do full fledged engine work. Thanks again man!
I'm not even a diesel guy, but man you make some really great content!
+998 Squid Thanks for watching the videos, I try to make them professional as a guy talking into a camera about engines can be.
Adept Ape They are professional! But don't let your inner creativity go to waste either!
All the videos are helpfull
I'm a maint tech for a deere dealership. We see many trucks on the hook. Friday it was the fish hatchery crew, so it's great to have fact based insight toward their problem.Thanks for posting. M.
Learned a lot from your videos I'm a mechanic in the army and we use 3126 and c7 on strikers and are always having problems
Love your content and how thorough you are yet speaking to a basic level of knowledge! Please keep the vids coming! I collect busses and you have saved me a lot of time!
This video is extremely informative and helpful to navigate around your c7. Great video.
Saw one of these in a buddies shop in CO, man oh man would I love to swap this into a pickup.
+Michael Ray They are simple engine that can get a lot of torque (860 ft lbs) but are quite expensive.
Thanks for the info,
I am committed to a purchase of a 2008 Ford 650 and to my surprise it has a CAT engine. This info was not shared with me online, before I took the hour long drive to lay eyes on the truck. That reason was! the dealership does not have the authority to sale a commercial vehicles, I assume insurance or some other governing in there industry, however I test drove the truck and it ran fine although it seems to have an automatic engine break whenever I let off the accelerator the engine would slow itself down. But it is a beast of a truck! This is what brings me here. It is a AS IS! sale and there mechanics have no clue about this truck and they normally offer an inspection /diagnosis IN HOUSE. and Like you would imagine things got all slippery during the closing stages of the sale and I felt like I may be getting screwed. asking price $ 25,597. I got them to $24,497. Whata re the first things I should do with this truck to insure it's road worthy and I made a good purchase???
A couple of the oldest trucks in our fleet have these engines, and I just starting pulling an air compressor on one of them. Never really done this big of a job (at least in the engine bay) so wish me luck.
I enjoy all your videos and I want to thank you for for sharing your knowledge you make everything clear and I thank you again and take care and God bless
I find your videos very helpful for my understanding, I myself am an apprentice with Hastings Deering Cat® from Papua new guinea in the pacific. But we come under an Australian region dealership. Im glad to know you make these sorts of videos. Please continue the great videos , really is good stuff.
Thank you for your great and helfull information Sir
i really missed you bro! cheers from Mexico! God Bless You!
93-1 got a fuel pressure voltage high which indicates an open circuit. Well your video guided me to the back which has a fuel pressure sensor on the left side of the regulator that was unplugged.
I have cimilar engine..
Cat c7 2007.
Freightliner..
Nocking noise sometimes
Specially when taking off stepping on gas
Or on hight speed verly
Did valve adjustment, did replaced all 6 injectors. ( No trim files were programmed)
Any ideas ,,
Great... 👍
Is it safe to buy a 2007 pete 330 with 300k miles with c7 , its a flatbed tow truck. Thanks
1:15 if the fuel pressure regulator went bad would that cause an injector skip?
I've been chasing an injector skip on cylinder 1 for a while now in my 2008 ford f650 tow truck
I would just change that fuel pressure regulator and check the fittings on your injectors
I have 05 freightliner with car c7 I been getting barometric code what do I need to do?
I had the fan hub assembly seize while driving through AZ. The belt shredded and the fan fell off. I was lucky it didn't also destroy my year old radiator and CAC, but it still cost almost $3K when it was all done.
So glad for the information. I really thought my motorhome had a great engine. After this video,I am convinced it is not. I gather the oil changes are most important. I would think an oil filter between the huei pump and the injectors would be a good idea.
Cat makes a kit that includes oil supply line , filer housing and mounting.
Where is the fuse that controls the alternator because my new alternator won't charge. I have a 2004 GMC C7500
Thank you
Are there people in the marketplace offering reprograming of the C7 ECM, aside from Caterpillar. For deleting certain engine components, for example.
Weve been trying to narrow down a dead #5 cyc on a bus, now im thinking maybe something failed with the lifters. I didn't know that was a problem we've tried everything else so maybe this is the next step
I worked on a 963 with a c7 bullshit spot for the side motor mounts had to either remove the cab or get a bunch of old service manuals to use as a booster so I could tighten it
Love the videos, currently going to community college in Oregon learning diesel mechanics. On to my 2nd term. Thanks for the tips. My school has a partnership with snap-on where if you are a student you get about 50% off on all their tools for the 2 years you are in the program. Time to stock up on tools haha
+Nathan Moulder I used to have that discount too with Snap On and Matco, I was sad when it ran out.
Adept Ape
Yeah im gonna be spending most of my money on them while I can honestly haha
I have a 3126 that has a air intake heater. The relay feeding power to the preheater is good. What tells the relay to turn on. It's in a 1998 chevy truck
News to you, I work in a Caterpillar engine plant and Cat makes the Perkins engines. And we make a lot of them.
Can you go into detail on the fuel system on the c7s please
Where is the number was stamped on the block ?
I am having starting problems with a 3208 CAT, starting with easy start but not on it's own, trying to find glow plugs or heating element but can't see them anywhere, DOES IT HAVE THEM ?
Love your video's, I've watch these when i had a 3126 and I'm back because i believe i have a C7 in my 2006 Tiffen 40 ft motorhome. last week it was on it's way to Alabama from Philly PA, ran like a champ down the the Virginia North Carolina border and then it went bad. I wasn't there, a buddy of mine had it, he said it started blowing some black smoke, had a small vibration and then shut down, would crank and is now in a yard in NC. After watching your video i'm curious if the high pressure oil system could lock things up without really damaging the lower portion of the motor. I'm feeling like this is a blown motor but i am very limited on my diesel knowledge, if it was a gas motor i would know a little more, but i'm looking for some very educated info. My 2nd question would be, if this is a blown motor and i need to replace this do i have to replace it with a C7 or could i put another Cat motor in there instead. I really appreciate any help or advise you might have because I have to fix this, the motorhome is very nice with the exception on this issue.
well I stalled out the other night and it wouldn't start. I assumed it was filters. changed both and when I prime it I'm not getting resistance as it should. below the heui pump is where I'm hearing a hissing like noise. when I get it to prime at all it will fire up and run until it loses fuel I suppose. I'm obviously not a mechanic but good with working on my vehicles. had it towed to my house with hopes it was filters. the water separator was disgusting with what looked like mud or rust. I just bought the truck and few months ago. thank you very much for the response and rest assured I will be making a contribution once I know how!
+jeffrey katits You should email me at AdeptApe@yahoo.com
It's easier to respond to comments that way. If you had rust in your filter, inspect those fuel tanks for deterioration. I would hook up a fuel line out of a bucket to isolate your suction side. You should watch my fuel system troubleshooting video if you haven't yet.
What happens if it's blowing white smoke when I push the gas pedal to drive or when I'm driving
We have a caterpillar engine no problem of starting but after few minute it's soto itself. That use to drive fintec crusher
I'm doing a new exhaust seat number 5 cylinder. For some reason to drop the valve seat. Chewed up the top of the piston a few scratches in the cylinder. Trying to locate maybe a oversized piston for that cylinder. Does anybody know if they sell oversize Pistons?
Good Eveing! Wanted to how turn your C7 engine manually...
When the C7 is warmed up and you have been running for 60 mins, what is the normal idle oil pressure at a stop light?
This is great. Thank you so much!
Does the computer make a difference if it’s a c7 or a high horse power c7 cause of the electronic waste gate actuator and if it is if I swap computers do I need to swap the engine harness as well?
How would you know if the turbo is not working?
ok....subscribed! been watching your videos for 3 nights now! my 2005 f650 rollback is down. was driving down the road accelerating and went dead....engine just shut down...coasting along just windmilling. towed back to shop started checking simple stuff first....found the fuel in the tank was dark, couldn't even see light through it. did some research and found this could happen because of bad o-rings on the injectors. changed O-rings reinstalled injectors...still no start! pumping primer pump and heard fuel running back into tank...thought fuel pressure regulator was stuck open...replaced it and still no start! disconnected fuel line from primary filter to transfer pump, put line in a jug full of clean diesel...primed about 20 times ,still no start. hooked up fuel pressure gauge , pumped primer about 20 times again, builds pressure up to about 50 pounds with primer and then bleeds down....can hear fuel running back to tank. crank engine, no pressure...thinking transfer pump...any ideas before I buy a new transfer pump and should I change the heui and the transfer pump together? oh and I had read 2 codes on the check engine flashing light....26 and 39
oh and I forgot to mention heavy oil consumption....about 1.5 gallon in about 300 miles!
+James Conarton Alright, thanks for watching. So the oil consumption was probably the HEUI oil getting pushed into the fuel tank and then getting burned. So hopefully by getting the injector seals changed fixed that. If you aren't building any fuel pressure, you've already change the regulator and ran it out of the bucket then it sounds like the transfer pump is the next on the list. The transfer pump can be changed without changing the HEUI pump, but you'll want to remove the HEUI pump off the engine to do it. The HEUI pump is about 5x as expensive as the transfer pump, so if the HEUI pump is okay I would definitely reuse it. The transfer pump has a special bolt that comes with it to hold the pump together when you change it so be careful. Let me know what you find. Is the tach showing a signal?
ok update...the bolt on the front was almost all the way out and the gear was hanging off.! is this common and do you think this is our only problem? do we just reinstall it or is there a special process? and also thank you for the quick response!
I have a 2008 f650 with a cat c7s engine that will not manually regen, the cat dealership says it's the ard head, but my question is could it be the fuel supply going to the ard head. When it starts the manual regen it will try for a few minutes before it fails. There is an ard after treatment nozzle that was corroded and it fell off when checking it. Would it make sense that the other lines could be plugged or corroded and not allowing the regen process to complete?
I have a very funny problem with the c7's that we have at my bus yard they are acert engines and they all eventually below the oil cap off and all the oil out of the crankcase is this a common problem and if so what do we do to fix it so far we have been zip tying them in place
+Thomas Santilli That sounds more messy than funny. Check the crankcase disposal line running from the exhaust to the crankcase breather on the valve cover base. The line that threads to the exhaust gets plugged with soot and closes, which causes the blowby to go sky high. Check my video on using an air hammer to loosen fittings, it's one of my first videos, it'll show you which line I'm talking about. That would be where I check first. Let me know what you find.
Excellent thank you so much
unfortunately the tube was clear I did clean it out and replace the Breather element while I was there
+Thomas Santilli It isn't the tube, it's the fitting itself going into the exhaust, was that clear? I should have specified, if it is clear check the flapper valve in the valve cover base to see if it cracked.
Yes i also check out the fitting i will check that valve next did have time last night
Hello sir I have a c7 in my bucket truck today it would not start after showing up to a job it cranks and everything like normal we sprayed a little starting fluid and it fired right up and ran like normal no issues just doesnt start on it's own idk if you may know what the problem is any help is greatly appreciated
Anyone know where I can find oil gauge pressure sensor on c7 2005
Thank you
Hi I’ve a 2003 motor home with a C7 cat 300 hp diesel pusher, on a freight liner chassis. But I stop cranking the engine few years back and it only has 14,000 Miles, but now it won’t fired up.
Any suggestions
You should email me at adeptape@yahoo.com
Keep coming back to your channel for more!!
I have a question
Got a c7 in my Sterling flatbed, power steering fluid god dumped out on the way back from a 30 mile drive. Pouring out of the reservoir itself. Can’t find any leaks, I put some pressure (10psi) to the reservoir itself to see if any vacuum hoses would leak but still nothing.
It has the hydra boost brake booster so the brakes are tied into the power steering system.
When I turn the steering wheel (with front end jacked up) left, the fluid level goes down, then turn right and it goes up in the reservoir. What makes it super pressurized is when I hit the brake pedal, almost instantly it’ll fill the reservoir and piss out of the cap. Thought the PS filter was clogged, changed it out and still pouring fluid.
I have 3 things that are pretty pricey that I could replace:
Power steering pump on the engine
Brake booster on the truck
Or steering gear.
I’ve been doing some reading and apparently all of my symptoms point to the power steering pump itself. I’m planning on going to the CAT dealer in the morning but just wanted a second opinion.
Thanks for all of the videos man
I literally chop veggies/bbq to them when I make food lol even the ones that don’t directly apply to me I call it “learning ahead”
I was reading issues and automatically thought power steering pump. Did you get it fixed and how many miles are in your c7? Do you like it overall?
I have an oil leak Coming from the intake side, front corner... it doesn’t leak at idle. I cannot locate it. Any suggestions?
Good in-depth video adept!
+aaronw1996 Thank you.
Do you know where I can get the metal formed heater hoses? I have a 2007 sterling L8500.
I have a rear engine bluebird, c7. What oil should I use on this engine. Am I reading it correctly, I'm pretty sure it said 10W30..?? All the videos I see guys are using 15W40..help!!!
Thanks, good information 👍🏻👍🏻😎😎
I love all your videos.. Watching your videos I've learned a lot I'm 27 years old and I want to be a cat man someday like you
jesus torres do it!! I'm 29 and staring my apprenticeship at my cat dealer
+jesus torres Thank you and go for it, no reason not to do that if you want to work on heavy equipment.
Is the 2004 Huey pump C7 block the same as the high pressure 2008 common rail C7
my 3126 hydro locked. pressurized the coolant system and no drop . i pulled the injectors and it spun over. pulled the head just not sure why it hydro locked . injector cups? head gasket?
+Samual Krokson What was in the cylinders? Was it coolant, fuel, or oil? Have you inspected the fire rings on the head gasket to look for failure?
I believe it was water from the coolant system, head gasket looks ok to me but I will get an experienced opinion. It was using more and more coolant with no signs of a leaks on the ground
hopefully ill be getting a cabover 3406b next week but I still need to get this 3126 fixed , I really liked the truck and thought it would last forever but now i want this engine fixed and sold
I have a 3126B on my F-350 truck, I replace the inyectors seals because I have oil into the fuel system and after I replace the seals it still passing oil, should I have to replace inyectors cups? What is the chance to have a head crack on this engines?
Love the info, keep it coming
just curious. just purchased a F650 with c7 cat with 26k miles. truck seems sluggish from a stop. wondering if this is normal? thanks
+JERRY SKOPP What is the boost while you are accelerating?
Hey i have a c7 in a school bus. I have low indicated oil pressure, but the oil level is good. Should i change the oil to see if the oil is just old?
Can you start a C7 with starting fluid and no computer ?
Sir I have questions? C7 caterpillar engine Tamrock drill ranger 800.. new engine overhaul already.. when coolant temperature getting 150f the coolant coming out to radiator reservoir line why is like that? Thanks
Have the 190 horse c7 in a small dump truck can you turn the horsepower up by getting computer download?
Yes and no. You can rerate, but you have to start replacing parts like turbocharger and injectors as you go up in horsepower.
What makes intake longer hose close at high rpm.
Did the BAE military JLTVs in the 2007 to 9 range get the screwy C7 with the S or were they the good old fashioned ones? It's says they were 2007 EPA compliant. Would hope with their multifuel requirement the defense department would get the engines without the emissions noose. Been web searching and I'm not smart enough to find it.
I've got a 2006 f750 with the c7 in it. I'm leaking power steering fluid and breaking is stiffening up. Do you think I can refill the fluid reservoir and get my truck to a shop 15 miles away?
+MrHorhell Depends on how bad the leak is, as long as you can keep fluid in it you should be able to make it, but if you are losing brakes it is safest to have it towed or fixed.
I have a c7 in an f650 pickup and having a fuel issue. when I use the manual primer I hear almost a hissing noise (air leak?) in the heui pump. any ideas
+jeffrey katits Hmmm, will the transfer pump runs off the back of the HEUI pump, so maybe you have a fitting or hose leaking on the inlet of the transfer pump. Are you losing prime?
Adept Ape yes I'm losing my prime
Hi! What are the common problems or recommendations you can give on a C7s?
This is fantastic!!! Thank you so much for this info. I have a cat year 2000 3126 and it runs great. I'm looking at a 2005 C7. I've seen this video and is there anyway in inspecting the truck with c7 to see if there are any HEUI problems? Hard cold start, smoke? What can I look for that could be a deal breaker onsite with no tools really? Truck has 150,000.
+n9878f Without a way to communicate with the engine, the best way would be start it when it's cold, look for any stumbling or surging, then run it at different rpms up to operating temperature. You should have them take it to a Dealer that could plug into it and pull any diagnostic codes if there are any. Usually they won't charge anything just to pull codes.
Just came across your video, very helpful
We were supposed to buy a RV that was advertised to have a 300 hp Cummins but found out it had the 350hp C7.
Should we pass on this MH because of the C7?
Hi, just bought a F750 bucket truck with the C7 ,159k miles. Truck was repossession and had sat in a holding yard for 15 months. Was turned in voluntarily and truck was running and hydraulics/bucket all operating. Getting it towed to my mechanics yard for start up and repair. What are some things to watch out for in a truck sitting this long and not running. Not abused or uncovered just sitting. Any suggestions would be appreciated. Thanks RC
+ralph campisi That's a long time to not start an engine, would probably say to try and tap into the oil rail and pump fresh oil through the engine, then change the oil and filters, dump in fresh fuel, prime the fuel system, probably need new batteries, but other than that you don't need to do anything special.
Definetly needs batteries. Thanks for the quick response and enjoy the holidays.
Could you convert this engine to run in a 2008-2010 ford truck?
Are the injector supposed to pool around the base of the injectors we are suspecting a leak on 3 of the injectors but they aren’t spraying out
Need help on c7 cat intake hose close up at hight rpm.
Hello can someone give me a video where you can see how the engine heater is immersed. thanks
C7 in a cat 324D Excavator, I have a oil leak, it looks to be coming from behind the engine computer, looks like some sort of inspection plate? Maybe for the push rods? Are those known to leak? I need to remove the computer to really see whats going on, but im kinda just look for some input, or is there something else that might be leaking that im not seeing with computer in place? Engine has 12k hrs on it.
Around my GMC 7500 K to the scanner and he said he had a high oil pressure voltage hi that’s what he has said on the sensor so but I don’t know what’s wrong with you can you recommend something in the video or tell me what to do or where the sensor is located at the video but I can’t
I'm on my way.
To buy a 2009 c7 30k miles it has the serial number s
but it is before 2009, so should I be worried about any missions?
Does anyone know how to locate the inlet for the glow plugs? I can't find the cable, or even the harness to plug a new one into
I had removed a hose to do some work and lost some coolant and am wanting to top back off which type of coolant do I need? C7s
+Timothy Nichols Cat recommends their Red ELC coolant, it is compatible with all Cat engines I believe.
Any chance you could tell why I'd be getting a code 102 07-13 turbo waste gate issue. We applied air pressure to the waste gate and it open and closed. What else should we look for? FYI, I'm getting a buzzer and stop engine and check engine lights when pushing done on the accelerator. 2005 Cat C7 in a Itasca Meridien.
can you help me I have a CAT engine that will not start in warm weather unless you plug the block heaters in but in the cooler weather it will start without the block heaters plugged in wondering if anybody can tell me what may be wrong with this thing no mechanics around here can figure it out
Hi josh, I have 2005 cat c7 in Kenworth t300 with allison automatic transmission. The engine runs good however every time Iam fully stopped in gear, my engine rpm fluctuates between 700-800 rpm. Any Help Would be really appreciated. Thanks
Hi Sir,l have a question regarding to a C7 engine,my friend is selling me truck that has this C7,apparently is loosing oil true the blow pipe,trucks runs but has that problem,can l put a 3126 and replace the C7.?or is not possible? Appreciate your response,thank you !
From my understand c7 basically is the same as a 3126 just the c7 is a little more updated when it comes to electronics
thanks for the video
I am looking at a 2005 rv with 8,500mi that has not had the overhead run.
As the CAT C7 does not have O2 sensors, what sensors does it use to do the same job as the O2 Sensor? Thank you for the wonderful and informative videos. They are an great help.
+W. Simpson An O2 sensor is more of an automotive gas engine sensor than a Diesel engine sensor. Since a gas engine has to run at a nearly constant fuel ratio it needs the sensor to fine tune the ratio. A Diesel on the other hand nearly always runs lean with a wide range fuel to air ratios. This is why a Diesel doesn't need an O2 sensor. There are nitrogen oxide sensors on newer diesels, but they are for testing the SCR catalyst system and egr, but they are not tied with the fuel ratio the same way an O2 sensor is.
Thank you very much. Great help and information. Thank you again.
I am looking at purchasing a 2007 F750 with a 7.2 liter C7 Is that the early or the late serial number?
I am working on a C7 on a bus and I am getting a active and inactive injector mechanical no response code. Does that call for a injector replacement right off the bat? or should I do the fuel verification test? and other tests that you may recommend???? any and all help that you can give would be greatly appreciated
I have a c7 in my Freightliner and it died on me while I was stopped at a red light. The mechanic first said the cam/timing sensor was bad. They replaced the sensors and it still cranks but wont start. Same issue. Now they are telling me the ECM is bad, I just had a new ECM installed on 11-30-17. Does this sound right?
I'm working with a 2008 C7 dtc 1077-16. Pilot, main, ard head, regulator has been replaced. Thoughts?
+Dave Tuttle What is the serial numbers sir? I'll have to look up that code, don't have them memorized by heart.
I wonder why the caterpillar engineers didn't add a second exhaust valve. There's two intake valves and only one exhaust valve. Exhaust valve is a little larger (intake valve is 1.578 vs. 1.697 exhaust. I believe the exhaust valve also opens larger.
Does this apply to the modern 2020 C7 Cat engine that comes in a 330 Cat excavator
all valuable information.......does the C7 have the plastic plugs to keep the gudgeon pin in?.....and is it possible to read error codes without a Cat laptop?
Anybody know I'm here if you can do oversize Pistons on the c7?
Will this engine work well on a 2008 freightliner m2? What would you advise?
I can really use your help! Bought a Chevy 8500 Dump with a Cat C7 engine 2007 From Baltimore City and I can not find the block heater cord. Is it possible it doesn't have one or am I looking in the wrong areas? Where would it be?
It's on the passenger side of the motor and follow it. Mine comes by driver door
Hello, I hope you can help! I have a 350hp C7 in a motor home that keeps derating from over heating. I've been told that the waste gate is frozen shut. The shop is dicking around with it on the engine with no results. I have friends who had the same problem but theirs was corrected at Cat shop. What is your take on this? My area Cat shop is out of this world $$$$ Help...............
+Stephen Yagecic Please email me at AdeptApe@yahoo.com