How to positively check for a dead 7.3 Ford PowerStroke fuel injector. 1995-2003
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- Опубліковано 8 лис 2018
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Ron Williams
Mobile Fix Automotive
26793 Madison Ave Suite 100
Murrieta, Ca. 92562
951-579-7146
Website www.mobilefixautomotive.com/
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How to properly troubleshoot a misfire or possible bad fuel injector on a 1999 1/2 through 2003 Ford Powerstroke 7.3 diesel.
Doing a little research for mine and just realized at the end of your video that you are in my city, great to find a diesel mechanic in town.
Dude. My fist time on your channel. Your too the point and no flashy crap. Thank you
Ron, thanks. My old dog is at 460,000. Trying to learn about injectors. Your instructions are clear and very useful.
Ive got a 99 412k orginal no leaks or lag yet only got a straightpipe and tip on mine
Thank you for the helpful knowledge. Alot of us home mechanics don't have access to cool testing equipment. This video helps alot.
You the man sir!
I have argued about those valve covers being able to come off!
You could make a breakout box using valve cover harness connectors and use it on one side at a time. To cover all the HEUI 7.3s, you'd need to make an adapter for the 94.5-98s, since there are 2 connectors on each valve cover gasket, however. I made one using the main (42 pin) harness connectors and a bunch of momentary switches, and it works on all the 7.3 HEUI engines.
Found video, wasn’t subscribed : Watched video, subscribed. Easiest thing Ive ever done regarding my 7.3l
Thank you for a clear professional video!
The idi motors had a mechanical injection pump, but in 94.5 they swapped to the heui, not 99. The mechanical pump in the valley is a lift pump on the obs’s. The idi motors were completely different than the power strokes.
Dude lost all credibility of what he was trying to say about how great the engines are from what he’s seen since he obviously doesn’t know shit about the engine SMH
I caught that also
@@operatorbenji9735 Or, maybe a "slip of the tongue"?
@@operatorbenji9735 a o988
@@mastrich1613 mm
Thanks for the injector outlet info, never heard that one before.
I cleaned out my after market intake and left a rag inside the filter. It flew into the turbo. The truck still ran but sluggishly.I’ll never forget the sound of the rag in the turbo. The turbo survived 💪
Thanks Ron. That was very informative. I own a 2001 F-350 Dually with the 7.3L. This is the first Ford I have ever owned, and wouldn’t trade it for ANYTHING! It only has 155K miles, and I know I can get a million miles out of it!
I have an 2001 f-350 dually with 120k zf6 transmission and a 2000 f250 with 137k zf6 transmission as well both southern trucks 0% rust
Ooo Murieta California, you're close by! 👍
Great explanation, learned something new today. Thanks for sharing your knowledge.
I wish you would've showed both banks with the injectors oiling out their exhaust ports.but still was very informational for helping me diagnose my issue. Thank you
This video is one I'm scheduled to redo hopefully soon. There is a verbal error in which I give the wrong year the engine changed from direct injection to the new injectors. But the information is still correct. Next 7.3 I will.
They made 3 different 7.3. The 7.3 direct injection, the 7.3 huei injection system which was single shot injectors and it ran from 95-99, and then the second generation 7.3 huei injection system which was split shot injectors except for cylinder #8 and it ran from 99-03.
You can bypass manually pulling parts first by getting a 2.2k ohm resistor and install it into the engine temp sensor. This will trick the ecm/pcm into thinking the engine temp is at 212"F so it will allow you to do an injector test with a cold engine. I see this a lot with the international 444 and 466 engines. I hope this will help you save some time in the future. Good video, thanks.
The first 7.3 was IDI not DI (not a powerstroke and made till early 94), all the DI 7.3s were HEUIs 94.5-2003 (though IH continued making them till 04 T444E).
I'm glad someone cleared that up,as I have yet to see a direct injection mechanical 7.3. although I like the idea of that
I completely agree with you at :32! Thanks for this video!
This is exactly the challenge I have with my e450 7.3l school bus. Super helpful
Did you figure it out.
I've had my 2002 F-250 7.3 PSD pickup for almost 5 years and even though I've had to shell out for a new, beefier transmission once, I've never had any major problems with the engine itself. Just the common oil leaks which I've since remedied. 320k miles and still strong.
An Allison transmission bolts right up to the t444e/7.3 I’ve heard
Thanks for the info. Really helpfull. I will check my injectors that way, i can feel is one injector missfiring!
Please do a video on the early 7.3 IDI dead injector and how to diagnose it. Thanks
That’s an interesting test. Thanks for sharing.
Thanks Ron, informative video! Cheers.
Thanks for the great vid. I have a 1996 7.3 with 276,000 miles. runs like a gas v8 with a plug wire removed. Buzz test is good. (Car Gauge Pro app @ $5.99 and a BAFX bluetooth obd2 adapter @$20). No oil usage, no smoke, and good fuel economy. Removed the valve covers and watched all injectors squirting oil from the spouts nice and consistent. Found cylinder 5 exhaust manifold runner to be 30 degrees cooler than the others. Removed the injector connectors one at a time. RPMS dropped significantly on all cylinders except 5. Tomorrow I will do a compression test on 5. I think the problem is the fuel side of the injector. The presence of the correct amount of oil flowing from the spout does not guarantee a good injector.
So you haven't located the source of the misfire but know it's a bad injector? Keep me informed.
@@SandCarServices Compression test today on cold running cylinder #5 with good oil discharge from spout shows a remarkable 380 psi cold at an elevation of almost 6,000 feet above sea level. What would be the next logical test? I am suspicious of the fuel side of the injector. Could it fail or plug while the high pressure oil and electrical parts of the injector pass testing? l also found the armature clearance to be 3.5 thousandths. Thanks for your help.
replaced the injector today and now I have all eight cylinders firing well. The injector jets on the tip of the injector were completely encased in carbon. I suspect that the high pressure oil and electrical functions of the injector were working. The injector tip and orifices were simply clogged. The "positive test for failed injector" did not apply to this case. Thanks for your vids, they help me lots.
Love your videos! I have always done all my own automotive work but age has caught up with me and I still will do brakes or oil changes but that’s all. Putting your number in my phone to come to you if bigger things happen!
thanks for the info! happy holidays
I liked and tanks, you need to continue
See someone corrected u before I had to! Good video tho! Love the 7.3 powerstrokes.
Thanks for the video Ron.
Thanks man, this helped out a lot! 👍🏻🇺🇸
Love your videos man !
Mine's at 431k miles, great motors.
I have a 2000 F350, that has sat since 2013, I got it to run but, not running very good. I am suspecting injectors, this helped me out a lot. If you are in Murrieta Id like to chat.
Great video thank you for the help
i guess i am lucky i have a 1999 f250 with the 7.3 its a 6 speed with only 163.344 miles i am the 3rd owner. have had to replace the ICP sensor and the starter. other than that no problems i have had the truck going on 3 yrs. and the torque it puts to the ground is amazing. i pulled a old 1970s excutive motorhome out of a ditch. i put it in low gear and it pulled it out just at a idle
This guy is really knowledgeable, I'm an auto mechanic myself with over 25 years experience.
The actual date that the 7.3 IDI stopped and the 7.3 DI Power Stroke started was 94 1/2, Ron. I really enjoy your videos.
I know, for some reason i always say the dates the body style changed. 94.5 is the correct date
@@SandCarServices I believe 99.5 was the year the "split shot" injectors were introduced.
Yup better injectors and bigger turbo. I have a early 99
97 OBS California emission trucks had split shot injectors 130cc all the way to the e99 super duty. 99.5+ have the 140cc split shot injectors.
Cummins 6bt (2nd gen w/with wet liners) is the best light/medium duty diesel ever produced,in my opinion.....once the "dowel pin of death" mod is done,they're bullet proof...and found to be the easiest,in engine compartment diesel to diagnose and work on too(again,just my opinion) .... The 1st and 2nd gen 7.3s are definitely on my top 3 list too(#2) and of coarse I'm gonna get crap for this,but the 6.0 powerstrokes are damn good engines too,when treated right, with no Bulletproofing......great video by the way...just happened to be scrolling through and decided to stop here...glad I did,cause it's very straight forward in comparison to other 7.3 vids...liked👍 and subd
Your full of shit unless you don't plan on owning one on these for very long. My 2000 7.3 has 800,000 miles. I seen a hotshot driver on UA-cam wirh 1,300,000 miles on his. Motor never even rebuilt. 6.0 never make it. 5.9 will be spitting out water from under headgasket .
For one, It's "you're"....not your....and two,how am I full of shit? Do you even know what a 6bt is? I'm assuming not....and FYI,the 24v ('98.5-'2002) are the engines that have head warping issues that lead to gasket leaks...which a simple solution is fire ringing it....And,yes, A Cummins 6bt with a p7100 is a damn good engine...7.3s are good too,as I mentioned...And I'm also willing to bet that you're not aware that there are 3 generations of the 7.3...now,for you to think it's easier to work on a 7.3 V8 vs a 5.9 Inline 6,then you've obviously never pulled a cab neither,cause you can't do anything major(heads,full overhauls,etc) on a non OBS without pulling the cab ....and yes,6.0s are a damn good engine if they're treated right(untuned)(even the 1st Gen 6.0s with the round HPOP)...EGR cooler delete is the only recommendation I give my customers' for those and STC fitting updates for first gens....I have serviced SEVERAL with over 600k,daily drivers,that have needed nothing but am injector here and there and p.m.'s...The only engine and last engine that Ford had contacted International to build,is the 6.4...which is a garbage engine and the reason Ford dumped them and started doing all of there Diesel's with the introduction of the new 6.7 common rail....So,don't come on my post talking shit and using "I saw a engine on UA-cam" as your ammo for my OPINION of my top 3 light/medium engines...This is coming from a Master ASE certified tech, that's been pulling cabs for over 20years and been in the industry doing this everyday for the past 25yrs.... Shit,I've overhauled Warsillas and Mans that are the size of your vehicle,so there isn't shit you can tell me,that I already don't know..good day to you sir
Dt 360 international trump's the Cummins came with wetliners bottom end takes well north of 1,000hp have 5/8 head bolts from the factory
That thing is CLEAN under the hood for 400k! Awesome 😎
All 7.3 powerstrokes from 94.5-03 are direct injection ID HEUI (High-Pressure Oil Injection). None of them had external fuel rails. The IDI indirect injection trucks stoped some where around 94/95 and were not branded or referred to as powerstrokes. Also none of them had fuel pumps on the intake manifold not even the IDI. 99-03 trucks had the electric fuel pump on the frame rail below the driver and OBS PS trucks had a mechanical lift pump in the engine valley in front of the turbo but behind the fuel filter housing. IDI 7.3 and 6.9 trucks had the lift down near the bottom of the engine near the front and it was just a old style fuel transfer pump that worked at a very low pressure similar to most carburetor style diagram pumps.
Man I watched this video because my 02 7.3 is misfiring on the freeway at normal engine temp but fine driving around town. I saw you’re in murrieta. I’m in a fallbrook and might be giving you a call sometime
great video, thanks for sharing!
Yup Very good. Mines is puffing out White bluish smoke running Cold or Hot in sure it's One of the Cylinders because it has a very slight Miss when idling
Really good videos
thanks for the video i hope things not bad on mines
The cheap fix for an injector that won't fire cold but runs when warm is to shim the armature. Mine's got 434k miles and I think all but #8 are original. Shimmed the 7 old ones back to factory spec and she fires right up hot or cold.
Could i find info on how to do this? thank You!
@@gabrielalvarez9570 Google "shim 7.3 injector" and you should find the kit and instructions.
Thank you sir very helpful I have a 1999 F250 7.3 with 78,000 miles
Brandon B wtf that’s really lucky
At that rate, that engine will last you 200 years!
I own a 03 350 with 150,000 damn near eat off it.....
My '00 7.3 has 406k miles and runs great!
I have 42,400 on my 03 !! It’s still brand new
Best diesel engine ever produced. 😄
300k views says otherwise
Ty Ron. Yup the 7.3 power puker lol is a damn good power plant. The 6.0’s have a bad rap but still ain’t too terrible as the newer gen ones.
Thanks you ,Sir . Btw my 02 , 450 c&c has 467k miles on it and I believe you have just shown me what's going on ( or not going on rather) with her. Can't believe w/ only 467k miles on it , that it isn't warranty work ya know ? 😊 Lol
Amen the 7.3/T444E is one of the best, def best in the light duty pickups.
Sir the HEUIs came out in 94.5 not 99.5, they went to 120v IDMs in 99.5 from 100/110v IDMs in the early PSDs.
IF it's a 7.3 POWERSTROKE then it has the HEUI injection setup.
If you think I'm wrong, I have sever truck videos that you can see the HEUI is on 96 and 97 F series with the 7.3PSDs.
If you have read the past threads you will see I have explained my slip of the tongue. I was referring to the body change but said engine size by accident. You are correct. Next time I get a 7.3 injector job in here I will re shoot the video and correct it. But since they dont break down often it might be a while.
120 volts
Excellent 👍
Great video man!
I was finally able to do a contribution test which failed cyl #5 and I did an injector buzz test and it came up with code,p1271,p1277,p1273,p1275,and p1293. I have the scanner for the weekend.i changed the injector harness and gasket a couple weeks ago I watched the injectors while it was running and all looked like they were oiling the same and I didnt see any oil coming up around the injectors.
I always enjoy your videos, thank you! I'm at a loss for what could possibly be wrong with my 2001 Excursion 7.3 and looking for ideas. Just replaced injectors (Motorcraft), and buzz test sounds great. Only code left is p1000 (drive test). Engine cranks but doesn't run. Found a grounded electrical conductor in Bank 1 at injector 7, so I replaced the manifold gaskets to the new all-in-one harness upgrade. New glow plugs and fuel filter with fresh fuel. ICP sensor is the updated version, and no oil is found inside the connector. Any ideas would be greatly appreciated, and again thank you for this video.
I was going to suggest IDM, injector driver module, but the buzz test being OK makes that unlikely. If you are seeing proper pressure for a cranking engine on the sensor through a scan tool, one other thing might be the throttle pedal position sensor. Steven Cox's channel has a video on that causing a crank no start. Did you ever figure it out, seeing that this reply is one year later?
I have my own diesel shop and I can assure you, 12 valves are better and this is coming from someone with tons of each. Cummins and powerstroke
THANK YOU
Buzz test doesn't go as the firing order. It goes in numerical order. 1,2,3.........8.
Ha ha, I built my own break out box a year ago, lots of cash invested in it, cause I too needed the harness, but we'll worth it.
I was looking into building one too
Junkyards will give you the harnesses for free....
Thanks for the time and effort you put into helping others with your videos, I have been a mechanic for some years, around many different engines mostly on rental equipment, I'm not a diesel expert by no means, anyway I have a question about my 2001 7.3 , I bought the truck about 7 months ago, a very well maintained 250 , I have had a reputable diesel shop run a diagnostic , they said everything within specs, but my engine seems to have a slight miss, or seems out of Ballance, at about 1300 to 1500 rpm I can feel it just sitting in the seat, I have friends with same engine and I sit in there truck do the same rpm and smooth as butter, my engine is totally stock, 308k original injectors, could one of the injectors be working but maybe not injecting enough fuel, or maybe something else, thanks for any feedback, and anyone else reading feel free to advise, thanks again Ron,
Also,keep in mind,as of '2000,on the 2nd gen 7.3s # 8 cylinder (bank2),uses a different injector p/n v.s. cylinders 1-7 ....it runs at a different fuel rate and the coil is different (cosmetically looks the same) ....I've heard all sorts of different reasons why #8 is different,from prevention of cylinder loading,causing a knock,to prevention of a lean condition on #8 which can cause a meltdown ....I've put a regular injector into a customers' 7.3 in an emergency and was suppose to replace with the correct injector,but that was well over 5yrs ago and the truck is still on the road daily, pulling a trailer with a skid steer and is still running perfect(client decided to leave it as is cause its running great!)...So,I truly don't know the real reason behind why Ford used a different injector in #8 ...also,internalional built the long block only...Ford added their own fuel system and induction to pass EPA regulations....fun fact though...the International DT466 inline 6 Huei uses the same injectors as the 7.3(for 1-7)
Long lead I’ve herd it’s because it’s last to get fuel at the very back of the head
I'm having a tough go with my 99 f350. New icp, cps, you know, ipr, and I'm putting in an IDM now, but don't expect anything to change given the guy I bought it from had apparently replaced the idm 3 times as theres a graveyard of them in the back of the cab. I see oil pressure when it cranks, it cranks with a great pulse like there's good compression. I think the guy replaced the hpop, fuel pump too. Just cannot get it to turn over with new batteries, new cables. Im at low oil pressure pump, or the wiring harness that is connected to glow plugs, or injectors
Nice video and information great I'm having a miss on one injector after water in fuel if there's any additive I could use thanks
I got a question for you now this is just my personal opinion when you're putting fuel lines through the in take Valley like on the 7.3 in the 99 Ford wouldn't that cause bubbles in the fuel line yes I know it is not the exact wording I have trouble with my speech but that's just my personal opinion and I use UA-cam channels like yours to attempt to learn it don't hurt nobody if I could go into a mechanic shop and tell them exactly what my vehicle is doing thank you for producing these videos I appreciate it
Hey buddy was just gonna let you know that the idi injection engine was done in 1994 and the electric/oil pressure injection started
Heyy Ron Omar here I had a couple of questions on my 2003 f250 7.3 I’m having problems turning it on when it’s cold out I just changed my glow plugs and my relay and still noting I’m not getting any power crossing over the reply when I flip the key do you think it’s my pcm or my wiring.? How could I do buzz test on my injections..? Thank you I really appreciate it.’
My brother has 7.3 2003 I saw number 2injector green connector does that changes the fuel leveling on the engine the problem is rough idle and it dies I saw d injectors are lubricating thru the vent on top we had the truck scanned and it said #2 and 4 thanks great video
Oh man you’re just right there in murrietta?! I should have brought my ‘99 7.3L to you instead of these guys down the street to replace my glow plugs. They replaced the glow plugs and the valve cover gasket.. ever since the the glow plug and fuel injector service engine lights have been on. Not to mention I can see they didn’t even screw in the valve cover bolts all the way!
Ron, what do you mean by a dead injector? I just rebuilt my injectors
and after a couple of weeks it started smoking black smoke. I did the buzz test and contribution test. The buzz test was difficult to distinguish the difference in the injectors the contribution test said the 1 and 3 were not contributing. I'm thinking maybe it's the connection at the harness or the harness itself may be damaged. If that doesn't fix the problem I'm thinking the solenoids may be bad. Any ideas?
It was... Just had a cat back... An that's it. Made decent power an sounds flipping amazing.
I have a jeep CRD. Not a 7.3 , still pretty cool lol
Can't touch a nice clean 7.3 here in TX for less than $15k. But 6.0s are catching on, if stud and delete done and has not overheated much.
I just bought a 95 F350 7.3 with 5 speed for $2500. Also picked up a 96 F250 7.3 for $1200. Both in east Texas. These are out there, just have to look in barns and driveways. But I also have an 06 F350 6.0 that is my go to for pulling loads. Runs like a dream.
Any idea of what the cylinder balance amounts should be on a 2020 6.7ps? Oil is growing fast and eliminated most everything at this point.
thax give you a like and a heart
Hello Ron I have a 97 f350 7.3, do you know what causes the engines to like surge up and down on idle when starting cold or warmed up. I'm thinking the IDM, engine has 208k miles and happens for period of time and go away and come back. Thanks
Actually, they started the fuel likes in the head in 94.5. Obs had idms too and heui injection systems
my injectors pass the buzz test, no check engine light, but its definitely misfiring under moderate to heavy loads. No smoke whatsoever and im getting 19-20mpg in my 1997 F250HD OBS pickup. I don't necessarily want to change all of the injectors. Any ideas?
I have two injectors that I suspect are bad
I unplugged them while running no difference. They have the ports open or partially open on the lower injector barrel port. I pulled a good one and these holes were closed. Should a injector have open lower ports sitting on the bench
What if it is a little rough idle at 1100 rpm. it runs fine otherwize. It does have a noisy injector when its warm, its the number 8 I changed it twice and it will come back after a few hundred miles
I recently purchased a full set of rebuild 7.3 injectors (1998 van). After having installed 6 of them, I found that the next box I opened had a different brand of injector. What do you think about "mix matched" injectors? Is it normal (or even acceptable) to have different brands of injectors come as part of a set? No "long lead" injector in my '98, so they should all be the same brand. Am I right? Am I mistaken, in my thinking/expectations?
Muchas gracias great job you are the best ✌✌
Great video...what of #4 and #6, were they putting out oil?
I love mine but I would have liked it more if I bought it new.
Question.. Can a bad fuel injector shut off that whole bank? Really hard to start due driver side bank not working, if i manage to get it stated after like 20 mns that side bank starts to work fine and i can drive it
I've got questions on a 2001 7.3 L Powerstroke it cranks but will not start I've replaced everything on the high-pressure oil side and the IDM what else could it be thank you
Any way to get an answer here in 2022 ? Recently rebuild injectors cause It wouldn't start now the passenger side is not getting oil any idea why ? the rockers are moving
I had number 4 not passing oil. Replaced injector, no joy. I ohmed contacts from idm and all cylinders ohmed great. Is my problem idm? I did find a worn wire from rubbing valve cover. Could this have failed in my idm? Now when started I get 1316 at every start up.
I have 2004 cat engine 3126 when I start the engine the engine shake like crazy and smoke when I hitting the gas for few minutes .
when the engine worm no shaking or smoke no blow by from the engine hose and when I drive it fine for few minutes and lost power and smoke and 15 miles per hour speed I do not know what is the wrong no check engine light.
Ron I have one that seems to come and go I replaced the ucvh with Ford oe parts I have noticed my oil deflectors dribble where yours just dump oil out of the oil spout from the injectors would this indicate the solenoids are going bad?
94.5, not 99.5 for the HEUI system, and the buzz test runs in sequence 1 - 8 (With AutoEnginuity at least). Great video, though...this is how I diagnosed a dead injector on one of my early 99's. Wound up being a broken armature bolt in my case.
This wasn't intended to help mechanics with diagnostic experience. It was for those that don't. And I have found many bad injectors that pass the buzz test but still misfire on cold start
@@SandCarServices This is how I learned...internet and trial and error. I wrecked one of my 99's so might make me a breakout box. I recently bought my 6th 7.3 and I am getting it ready for hauling freight.
Bud the 94 and newer had heui my 1995 turbo had same setup
'95 is the first year of the powerstroke....those are actually a first gen 7.3 that was in production from '94.5 to early '03....in 2000,they came out with a 2nd gen 7.3 and did do some changes to induction and a few other minor changes....the 7.3 IDI's are damn good engines too
@@mikekopisz1227 E99 is when the 2nd iteration of the 7.3 came out. Major differences include electric fuel pump, intercooler setup, wastegate, split shot injectors, and glow plug relay. Lots of minor differences but it's not a "Second gen"
94.5
I have the same pickup that has cranks but doesn't turn over. The fuel pump is working but it's not starting. What should I check? What should be my next step?
Hi Ron. Nice video and quite educational. Did that injector that was not exhausting oil start working gradually as thre motor warmed up? I wasn't sure if I heard it was a cold motor only problem or that it did it warm as well. Mine, a 2000 7.3, has basically the same issue. Misses when cold with some white (fuel) smoke and goes away quickly as the motor warms up but it is getting worse. And as you mentioned, mine passed the buzz test very well.
My truck has about 210k mi on her. If I find a bad inj doing the same thing, should I replace one or all injectors?
Thanks!
I thought from what he said it was a cold start issue, and ran fine once warmed up. I have same issue as well, and no start below 34F and poor start below 46F unless plugged in. Usually runs rough for a while when does start, with blue and white smoke. Once warm runs fine, except occasionally significant oil loss in short period of time, other times I can go long periods with out needing to top up.
I am into driver side right now. all glow plugs are fine, removed and tested. Replaced O rings on injector, all looked good. Unless there is a problem with the glow plug circuitry I think problem might be that injectors need shimming, or rebuilt. From what I have heard too low a clearance can cause the magnet and armature to stick and not fire, once the oil warms up it won't stick as much. I don't know for sure, if a buzz test would catch that or not. After watching some more videos I am at least going to check the clearance on my injectors. Easy enough to do with the valve cover off, just need to remove those 4 screws on top to get access the the armature. I wish I had seen these videos before I re installed the driver side injectors, but not too hard to check. I have the shim kit and cup kit on order just in case, might also need to get hold of the injector rebuild kit. I have 3 or 4 scanners that work with my iphone/ipad, but I have yet to get a combination of scanner and software to work very well with my 2000-F-250.
Expert diagnosis. They definitely don’t teach you that in tech school.
I have a 96 7.3 2wd, long bed, extended cab, with 5 speed manual and a 5 position chip. Went into limp mode couple weeks ago towed her back to place I stay and havent been able to get started since. I changed cam shaft position sensor as this was a problem once before. But now it Cranks good, just wont catch and go. I've tried pull starting it nothing. I have got to get it going before they call me to get to another project, who knows where I'll have to go... I am going to do some more troubleshooting today.
There is a fuel leak somewhere in the valley of the motor I've tried UV dye and could not find it. The leak has been an ongoing thing. Wondering if it finally caused pump damage or pressure is too low due to leak getting worse. ???
Your IDM is bad and your lift fuel pump is in the middle of the valley behind the high pressure pump it is known to leak fuel when worn out
Hey man I have a 97 obs and It’s running so rough. I removed my valve covers today and unplugged one by one. And noticed #4 and #5 don’t do anything when unplugged. The other ones cause the truck to surge. I did the buss test and they all passed. But injector number 5 is squirting so much oil and it’s all splashing on the glowplug. The other #4 isn’t squirting at all. What could my issue be ? Also I’m guessing #5 has bad o rings
So if I don’t have a way to do a buzz test is the oil going to be my only option or will it flow oil if the electric is bad only
Really enjoyed the video. So since there was no oil comin out that meant the injector is bad?
Yup!
Got ya
Has anyone ever sent you both sides of the harness, that you mention at 2:07 in your video?
Greatest engine ever that often gets replaced with one even better 😆😆😆😆😆
You realize they had to get rid of it for emissions reasons right
I have a 7.3 Blows smoke and some oil out of exauhst it runs and drives put new used Injectors,turbo and pedastol in it still does same thing its 2002 135,000 miles what could be the problem now i have a misfire on 2468 I've put a bit of money on it already replacing them again will solve the problem ?