Truck Repairs: Cummins L10 STC Smoke and Rough Idle - the Fix
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- Опубліковано 23 сер 2024
- We finally get the best of this L10 Cummins. We also fix some other issue such as oil and exhaust leaks, and new bearings in the bottom end.
Part 1: • Truck Repairs: Cummins...
Setting Valves: • Truck Repairs: L10/M11...
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As a Cummins tech I love those old L10, M11, ISM11, 855, N14, and K19 engines. Their so nice to work on, real quality engines and extremely reliable as well. Quite a few trucks still have those old men in them where as many have the old 1st & 2nd gen ISX15 and X15 engines which aren’t bad themselves prior to SCR Catalyst and DEF crap. Those older Cummins mechanical, Celect and IS versions of them were great engines and they loved to work hard.
The kind of power where a tech ask questions using the expression “HP is hard hard you hit the wall & Torque is how far you took the wall with you”. Those oldie but goodie engines in some cases made high power and GOBS of torque way down low right where you need it. Today’s engines are emissioned up so bad you luck to make 450HP and 1,800lb-ft going downhill with no load. Their garbage that’s why I grew tired of working on Cummins and working for Cummins inc. I miss the oldies though!!!
LOVE seeing an old truck being cared for by a skilled mechanic! Keep up the good work Wes!
So skilled he ran it with no valve cover gasket. I feel like UA-cam and God shows us the biggest dummies to teach us how not to behave.
Know it’s almost 2 years old but so glad you put bearings in it. Watch videos all the time where they say I just don’t want to mess with it.
Thanks for including the test drive. It makes it all worthwhile.
I think the most interesting part of this channel is that every project gets completed that’s just amazing to me. The other channels do not accomplish that and I certainly don’t either.
Wes could definitely make a great vocational school instructor.
Even open his own apprenticeship program.
If you don't learn something new everytime you watch one of his vids no matter how old you are you're not paying attention pure and simple.
He is a natural trainer. He makes you feel that you are under the truck with him learning how to do it. Some may say if you aren't getting paid why learn?
i watched it all. great video. lots of great detail. back when engines were simple.....simple is reliable.
Thank you. These PT pump Cummins engines really work. This L10 is the best starting engine I've ever seen. If you can get a full turn on the crank shaft, it will start.
HEY, there are three of us here!! Lol
Absolutely agree with you. Simple is the best for DIY and reliability. Now the EPA government nannies are restricting and over complicating the engines to meet their strict emissions standards. If you are in California for one, you have to contend with CARB. They are making people update their rigs with all the emissions trash, or it is illegal to register and drive on the road. Bunch of bureaucratic bullshit that makes it tough for the 'little guys' to make a decent living, and it's just another revenue generator for the state.
@@psavel274 pfffttt try Euro standards with Ammonia, Urea and EGR, AKA AdBlue. You could spend the best part of £10,000 making sure you're under the emissions requirements.
@@stevenbonsall6699
Its not just like that over there in Europe. For example, In California they have extremely strict emissions regulations. C.A.R.B is the California Air Resources Board which ensures you are up to par with all the "proper" emissions equipment in place and functional. They will actually impound a vehicle if it has any aftermarket part installed that doesn't carry the "C.A.R.B" certification, or has a part dedicated to emissions control that isn't functioning. They are also making anyone who runs a rig either install a newer drivetrain with a particulate filter, d.o.c., catalyst, egr, etc, or you are forced to take it off the road. The DMV won't let you re-register the vehicle unless its "updated" with all the current emissions equipment. This can be a hell of a blow to a small outfit that doesn't make a ton of money, or operate on a large scale. You are forced to either swap your vehicle, which we'll say is probably $30,000- $40,000 if you don't do your own work. If you don't swap over, you'll need a whole new truck. Those types of regulations could and have put a lot of guys out there just trying to survive out of business. Bureaucratic pieces of shit that make these ridiculous regulations are all over. Not to mention, almost every vehicle I've seen outfitted with all the emissions compliant equipment actually makes them run much worse, and can drastically reduce the life of it as well. The service department and the parts vendors may be happy over it, seeing how people really don't have a choice but to comply Fuck the emissions bullshit. They act like everything has a huge v8 with a carburetor just dumping raw fuel everywhere with a straight pipe. In reality, the modern stuff is very clean and efficient. These politicians can suck a big one.
Sorry
/end rant.
I thought I had seen every video you had, but happen to stumble across this one. It actually really helped out, I'm doing crank and rod bearings in my 300 Ford next week and watching you do it here gave me confidence. Thanks Wes, good stuff.
I'm always impressed with how well Wes can drive. It's not his thing. He fixes them, but drives better than many guys that are paid to drive them.
Best job ever. I watched both videos straight thru and read all the comments to date.I took notes. Some highlights for me were 1. breaking edge with points file to prevent babbit damage. 2. Using brass drift to avoid any scratches on crank 3.Concept of flash rust test to see if metal surface truly clean 4. Your torch method of heating cast iron manifold bolts without quenching to prevent manifold cracking. Plus countless others. Thank you so much. Craig
You had me laughing at the end, "I'm sure it's just the two of us" pretty funny man.
Cool video
Four!
Just the two of us
We can make it if we try
Just the two of us
@@jasonbode1242 You and I
The clips are a great idea. I was taught by my dad to use some thin 🧵 and tie the gasket down loosely through a couple bolt holes. After a couple bolts are in, just cut the 🧵 and pull the thread out before bolting it all the way down.
Thanks for keeping us up to date. There is a lot to be said for the old mechanical diesels. Keep em coming in the new year! Enjoy it!
Yogi Bear The Cummins stc system is junk , along with the L,10 , should have bought an M11 , No 1fault in the STC system is oil pressure . If it is not in range according to the manual it will not work , period .
Yuppers Wes, you are definitely the Wizard of everything diesel engine problem fixin'..
Quite the encyclopedia of diesel knowledge you've accumulated in your noggin' for such a young man as you are.
It's a big part of why it's so enjoyable watching you work.
50 minutes is a GREAT LENGTH.!.!.! I enjoyed the length...
Awesome! Having rebuilt two 4 cyl gas engines (way back in the day), I can only imagine the hard work with this 6 cyl diesel. Congrats!
It's all the same, just bigger.
Damn fine job.You and Western farm and Tractor are the best ones I 've seen.
Thanks for the video,alot learned from you guys.
Wes, I’m a Detroit guy but would like to add a few comments. First, excellent video, good prep & good assy techniques. First, I think that #1 main upper shell wear was caused by crankshaft deflection, most times by not use belt tension gauge when tightening fan belts. I have seen them break at front journal from same with the poly belts. On setting bearings we always torque to 50 lbs & then ‘set’ the bearing by giving a good tap with lead hammer. We then always try for side clearance check on rod cap in case bearing picked up debris or interference on assy. On mains we check c/shaft endo to make sure of same. Another tip for your viewers which you know already is that sometimes a shop mechanic on an in-frame o/h will not loosen fan belt tension before trying to remove upper main shells & damage old bearings & new trying to assemble. I’m subscribing, great work!
Watched every bit of it! LOVED the road test. Your work is so complete! Really a joy to watch you at work. thanks for sharing!
Congratulations Wes! She sounds terrific! :) I was thinking at 15:29 that it sure didn't look like that intake manifold gasket was going to seal around those two "jogs" in the lower-side sealing surface, but it looks like you got that worked out :) On the gasket retaining clips, I think those were originally designed to be spread apart into a "V" shape and be inserted through a bolt hole, with the ears holding the gasket and the little curves under the ears latching into the oil pan. But any way that works is good, and maybe they even work better the way you had them, probably less sensitive to gasket thickness that way :) Anyway, job well done and a source of pride on every trip in it for quite a while looking forward :)
Man you have a good eye! I saw that too. It's actually the wrong gasket. I have ordered a new one and will have to swap it. It sort of works, but those two dropped out sections barely seal. I think you are right about the clips too, but I've never tried it that way. It would make sense, but I might have to bend them a little to catch the pan flange in the right spot.
These snap ups from Fel-Pro look really handy. But the pan bolts on this Cummins are M10. www.felpro.com/technical/tecblogs/snapups-make-oil-pan-gasket-installation-snap.html
@@WatchWesWork Hmm, those look interesting. It looks like an added benefit is they help you locate the pan in addition to holding the gasket in place. It occurs to me you could do something similar by turning the head off an M10 bolt, giving it a bullet-nose at a good length, probably shortening the threaded end and cross-drilling it for an R-clip or something easy to pull out like that. I don't suppose you end up installing enough oil pans to make it worthwhile, but might be worth it in challenging situations, maybe where you can't see all the bolt holes or something because of a cross-brace or whatever :)
I noticed that gasket too. We decided to put a new engine in a Koehring 6650 instead of having the downtime of a rebuild. After installing it, there was a squeal that we thought was belt squeal because we used the original pulleys on the serpentine belt. Replaced the pulleys, still had the squeal. Removed the belt, still had the squeal. I used a stethoscope with an open tube and almost blew my eardrums out as I went under the intake. The factory had put the wrong gasket in and the air was whistling past at those notches under load.
That intake gasket is wrong, but I'm sure you figured it out, I use spray tac to hold the gaskets on, works great, Ive been at cummins for 15 years now and never had an issue doing so. So hey aren't those cummins oil pan gaskets a blast to get off. I use an air powered gasket scraper, so much faster, Then when going back together I tie them on with a very small wire at the corners like a bread tie, then once i have the pan up and a few bolts started you can remove the wire and put the rest of the bolts in
I have no problem with the not so long conclusion.
If you keep producing the videos, I’ll keep watching. This beats the flimflam, or what ever, out of anything on t.v., except maybe PBS.
I always watch until the end
I laughed so hard at 3am watching this Wes @ 34:45. I love these videos I just go way back in your catalog and queue them all, hit play, relax. So interesting by the way to see you change out the rod and main bearings. I love the way you did that. Very simple explanation and (from what my amateur mechanic mind could tell) executed perfectly. It’s almost like you do this stuff for a living ;).
Don't get the big head as I can see you wore a large football helmet but two years later, I am watching for the first time and enjoyed thoroughly. Like you, have worked on that engine, steel oil pan, yahoo won't break in half like the aluminum ones! I love your brand of humor and sense of touch when it comes to feeling your way in. I had those clips for that pan gasket in old tools I bought as a fetish of mine and they were still in the box unused cause when I worked on bigger stuff didn't have them and didn't occur to me what they were for. I can see plenty of uses for them now. I called myself a mechaneck but truthfully couldn't pack your water. As a mechanic, I worked like a rented mule but I just made it harder on me. I'm 72 and memories like this is better than a date with the prom hooker. I have finally learned how to click on the icon for your channel and look for videos I haven't seen. Your better than Netflix and I don't watch tv as it doesn't pay well and I learn from guy like yourself. Some shortcuts I know and others are a lightbulb moment. I remember my first engine, was a 36 chev one ton and what are all these brass things (oh oh!) I couldn't bar it over with a long dynomite bar.... OH....oh, thats what they are for and where did I put them. To get it fixed right I went to the store and bought some brass shim sheets and cut my own out from what I found/LOL. When I was done (I was 12 years old) two days later, I rechecked everything I did and found more stuff (I didn't read but my sister did an she would help me on stuff).... long story short, that engine lived for a long time for what they were in the day as I hauled dirt and firewood on that truck with just a driveline brake. No, your the better mechanic. I remembered everything in those days and now its remember to pull the fly down before you go. Great video
After 50 years in the trade I’m empressed with YOUR now how and experience at such a young age. Congrats to your Chanel!!!!!!
we inserted the"clips" though the holes from the top. start some bolts then squeeze clips and remove from bottom
Yeah that's the way they are supposed to work. I was wrong in the video.
My pet peeve is to never install a bolt dry. Glad to see you do that. Bolts torque up better with a bit of slicky.
Congratulations Wes, so glad the L10 is running and idling smoothly. Love that driving footage you got, and the sound quality of that camera you used while in the cab was excellent, plus, the truck sounds fantastic! Can you please do another long driving video of the truck? Make sure to use the same camera you did in this one for the driving portion. And please leave the exhaust how it is. Quite honestly, it sounds absolutely amazing, plus I don't like L10's that don't have a growl to them - much more tamer without one, which I don't like at all - I want them to sound mean! And when you do the long driving video, please make sure to get some exterior shots of the truck driving as well, so I can hear it driving off into the distance. Please let me know ASAP. Congrats once again!
I watched the whole video. As you started driving I got the feeling of deja vu, couldn't quite put my finger on it. Then you made a left turn and I realized I drive that road once a week and was driving that road everyday for over a year when I was going to school to get my degree in Mecatronics. Anyways great job I really enjoyed the video.
Did you go to ICC?
Awesome as usual. Watched both parts back to back and enjoyed every minute.
Great Job! That cummins sounds so sweet and smooth!! Seems like it has nice power too!!
I think there was more than 2 of us at the end. Great video and a great result another job well done by a master!
Good morning Wes. This is really funny, the more I watch your videos the more I want to tackle it myself. Well you have a good one buddy and enjoy your day.
I watched it all, I didn't catch it at first but you were working on the old rollback, I'm sure it will give you good service.
2nd viewing here. Enjoyed it more this time. Feels like this was a kind of break thru production. Has all the elements: problem, diagnosis, procedure, facetime, success, review. You make us knuckle draggers proud.
As someone who only had to drive the dump truck a hand full of times a month and said truck was a 357 Pete, I can honestly say it never got old. Also had a 10 speed Ford L9000 CAT that was a strong truck, poured about 10 times the smoke as yours but it was black. Yuppies looked at you like you were pouring nuclear waste out the back while dragging their first born behind it, Probably why I like that truck so much. Thanks for another great vid buddy.
The first real truck I drove was an L9000 Aeromax tractor with a 3406B Cat engine. That was a good running truck. It's still on the road. I used to haul corn in a hopper trailer. Mostly gravel roads and mostly in the dark. That was 16 years ago.
Watch Wes Work don’t Change a thing again you took me home and I thank you for it keep on going I’ll be watching
There’s not much you can’t do . Good job . Old Tool Maker . Fort Worth Texas
It's just nuts and bolts.
I sure would like to find a young dude like you to work in my shop . All I can find is a bunch of green button pushers lol and they want $30 dollars a hour
nice job. good to see a young man with some old school skills and no gloves! thumbs up man.
Yeah no gloves. I've tried but they just tear and drive me nuts.
Dear@@WatchWesWork
Please kindly allow me to suggest: Maybe try the type of gloves Ken Bergsma (channel Mercedessource) wears nearly all the time. It's really not healthy to work with Diesel or other fuels and oils without gloves. I sure do understand you because I also don't like gloves. But sometimes it's simply better to wear them.
Best regards luck and health.
You need to find a different brand then. Not wearing gloves is foolish. The oils of today are much different then the older oils, I will not work without them. I do the exact same thing as you do for a living, my skin was being bleached by the oils, I wear them. Takes some time to get used but they are necessar
Dear@@kevinoscarson2941
You are absolutely right, Sir! Especially paint, paint thinner, gasoline and even Diesel penetrates through the pores into your skin and then diffuse with your blood! No joke at all! Although I also don't like gloves it is absolutely necessary to wear them for some occasions and obvious reasons.
Best regards luck and health.
Loved watching the process.
My July 1999 built Cummins N14 only had 10psi oil pressure at idle at operating temperature; 30psi going down the road.
Night and day difference at idle for sure.
The Florida pool pump motor bearing repair guy approved ! worked on one years ago that the exhaust manifold shrunk. that was fun ....that was good info Wes
You did a great job Wes❤, and the job was done properly❤
I had no idea it was possible to change the main & rod bearings without removing the engine. Kind of brilliant!
Now it sounds like a Cummins again! Heres a question that nobody has ever answered, what gives Cummins their unmistakeable sound? There must be something in the design because they have a beautiful tone that's unique to Cummins.
Nice job! no job is done until the test drive is over! Thanks for bringing me along
Fantastic video and work! Even tho I understood about 0.005% of the terminology I still enjoyed watching you work.
That croocked steering would drive me nuts... Keep up the good work!
That engine sounded good. Good job that video brought back memories.
Wow made it all the way to the end. It is more fun when the truck is ear splitting loud, not for you but for us.
I’m sure your mum was watching until the end :)
Nice job, I hope a little bit of your skill rubs off on me with each video I watch.
My trick for holding gaskets during assembly is to use fine thread through the bolt hole and tie a knot after capturing the gasket and you can get a bolt through the hole to start it then pull the string to break it and pull the remaining thread out. Who knows if it is the best way but it will work.
Glad you were able to keep your card! Nice work! Congratulations!
Foodservice company i worked for.... their fleet had mostly L10 and M11's........You brought back a lot of not so fond memories.......
They are really pretty good engines and well matched to a truck like this.
Incredible job, i am very impressed. You sir have a really awesome truck and your work is amazing.
Yeah I have used a bolt with the head ground down to roll out mains back in the day. I'm unable to contortion myself in tight places but I do enjoy working on old trucks when I get the chance.. Well done.
Ive been working on 18 wheels for about 20 years now.....one indispensable item is loctite 80064 it is a life saver on those long flimsy gaskets!
One of the thin stainless spatulas I use in the lab would work great on removing an upper bearing.
Yes Wes, You were AWESOME!...AWESOME, and a great mechanic.
first class job on the cummins very impressed with driving david IRL
Grin was well earned, now bask in the smoke free fruits of your labor. Enjoyed.
This is one of THE BEST videos on your channel. From start to finish.. Almost.. To the test drive. Great video man!
Yeah I jammed a lot of work into that video.
Not a hell of a lot of people know this feeling. And then being able to own it. Do it the way you want to do it... PS happy for you.
You licked that one good man! Sounds great. You just gotta love a Cummins. My favorite motor is the 5.9 12v. Near 'bulletproof' engine. I too had an old f-150 with the big six and a manual. It was a '90 and it was a great truck. The exhaust broke in a bunch of places, but that didn't stop me from driving it as-is LMAO. I used to use it to haul motors- blocks, heads, and scrap. It was parked out front and someone in an old Buick clipped the bed on the drivers side. It did a ton of damage to they're car, especially since it was chock full of heavy steel and iron, ready to take to the scrap yard. Great truck though, a workhorse of a pickup that was built tough as nails.
I would say that was one mighty fine job you did there cheers brother great video
Enjoyed worth watching , keep the work up, much appreciated.!
Well done on your perseverance with this one. Above all, she sounds well going down the road. I drive a few old London Routemaster buses that were re-powered with Cummins B series engines back in the early 90’s and they run well. Not as musical as the old AEC AV590 but half decent, better than the Italian junk that got put in some of them.
You are a boss on the labyrinth of a shift pattern!
You did a good job. watched till the end....
You do good work. I have a 94 F250 4x4 pre-powerstroke diesel. Your videos are a big help
Liked your video and watched it all. When it comes to the valve adjustment I've been using the OBC method. Cummins actually had a memo out some time ago on OBC as opposed to IBC method of valve and injector adjustment on Top Stop Injectors. Looks like you done a great job. Take care
That thing sounds awesome when you're driving it.
The ole girl sounds good bud
I don't know if you've ever tried it but I use a brass brake rivit in the oil holes on the crank to spin out and spin in the slippers. Being brass it won't hurt anything, great vid!
L o L That little speech about the Chinese vice grips got to be the best on U tube ! 🤗🤗🤗
That torque wrench has such a satisfying snap to it, we've gone over to the digital ones and theyre just not the same! Nothing sounds quite like a cummins, unless its a large Cat lump!
excellent teacher cool calm and fully understands his work moore vids need em to get through christmas
Nice Test drive at the end She don't smoke no more at all nice to see old girl got her issues fixed @Watch Wes Work
Great video. One of the best. Good to see you getting a good result first go. Eddie from Scotland
I worked on trucks for 20 years, every year I would get lung infections a couple times. When I got out of the business it mostly cleared up. Those fumes were tuff on the body.
Yep...those are still called Marmon flanges.....and I do see a trend. Great skills...great sense of humor.
Another super fix... dedication plus !
That front bearing wear is common on high milage engines for two reasons - front gear train loads and tires harmonic balancer... if I was you I'd change the balancer ...
You are the man Wes! Go home, have a beer and relax! Good job! One question, from a old guy that never worked INSIDE a engine, what made you suspect something other than the injectors? Not why, but what? 🤫
Well the injectors are the most complex and expensive component of the system. I like to start with the simple things...
You're a hell of a mechanic.
Here in the UK, they fitted the L10 in to Leyland trucks and buses, and tgey used to say you know when it needs oil, it stops leaking. The Lynx bus had the horizobtal cwrsion shoved under the floor at the back, and oil smeared all over the engine cover and rear bumper. They were worse than Gardners for oil leaks. Linp along has a bit of irony here, as the largest aplication of the L10 was the Leyland Olympian double deck bus, nicknamed the Limpalong
Test drive at the end sounded real healthy. Nice.
Great Job Wes. Love your methodology to the re-build.
Cam
Awesomeness, definitely more than just us at the end 😊
god I love this stuff, such great and well-lit views of the work and great casual commentary infused with a life of experience! I feel like I'm right there with you, but glad I'm not, takes a toll on your body doing this work but the machinery is so marvelous!! Thank you!!!
metal body panel screw clips work great as gasket securing clips, while you mount it in place, and pulling them off is easy once you bend them out a tiny bit. or you can use barber cape collar clips. they need a little finagling, but theyre suitable and long enough
Hey Wes like the work you are doing and have used alot of the same methods / practices like marking the bolts afte torquing.
I never understood why Cummins packaged their gaskets rolled up like that, N14 gaskets came that way too.
I used to find when time permitted I would take the new oil pan gasket, lay the gasket flat between some clean cardboard and place the clean oil pan on top to flatten it out, it usually helped out alot. I also would take a bolt that fit inside the oiling hole on the crankshaft, shave down the thckness of the head and use it to roll out / roll in the upper main beaings.
I made it to the end. With you all the way.
Trying to find comments of that intake gasket. I noticed it but then obviously watched the follow up. Good its diesel i did that once on a jeep 4.0l thing hit redline in an instant.
Enjoyed the video i watched it because i have a L10 in a 92 Gulfstream motor home it has 79000 on it. So looks like ive got lots more miles to go.
I’m still with you to the end. Good work.
Great tip on the bearings, thank you sir.
Cool! I used to live near a brewery that used BFI to haul away their recycling. They sent a White/ GMC just like yours, only as a rolloff. Every time that hoist moved, I would hear that L-10 growl. I thought it was a Cat engine, now I know for sure it was a Cummins.
13:50 it's called Cementite i think, also appears on brake discs/drums that have overheated. Shame they can't heat the new manifolds up and make the stuff form reliably as it'd keep corrosion at bay for years!
Now there's a patent idea!
Great vid. Keep em comin. Love it.
Good video for educating people with same trouble.
Love it-Love it-Love it. great Video better then watching Motortrend......and No Commercials. Looking forward to watching your channel.
Well done. Both parts. Thanks for the ride.