this is the second time it has happened to me. usually i would have to take the head off , find head damaged, piston damaged, cylinder wall damaged and so on. this will give me a good engine to use in something else.
that is my one "lucky repair" for the year....i guess the rest will be more involved. i need to find a good solid old ford truck body to put on that frame...
Lucky, very lucky. I overhaul these motors for the bus companies on a daily basis. Major top end problems are dropped valve heads, valve seats and broken valve springs. Cracked heads are common, hence the dropped seats. If a valve has dropped, it often cracks the cylinder wall as the piston pushes sideways. The plastic keeper on the rocker is not available separately, but later rockers have that part deleted and the cups are held in place by swaging. The correct torque for the rocker hold down bolt is 36mm. Valve settings as per manual for your motor spec. Usual bus settings are 10 and 20 thou. I set them at 9 and 19 to let the new parts bed in a little. Note the engines I deal with have often got more miles than the starship enterprise, so don't sweat it with your motor.
@@j.c.smithprojects You'll amaze us with something unique I'm thinking....Very happy for ya that it was a simple fix and you netted a good running engine! Have a great day, best to Mrs. JC as well!
Awesome thanks so much for sharing this with us ! It's always pleasant to find out that it's a really simple fix but you always have a expect the worse and like you , hope for the best ! Great job 👍
Sounds like money glad to see that keeper down there I've seen it before on those was hoping that's what it was but like your videos a lot your a great mechanic with vast knowledge in ur field I'm in marine field but enjoy ur videos a lot
Hi Jc and mrs Jc, just like to say who ever said scrap it ask them if they would like to put there hand 🖐 in there pocket for a replacement? Easy to say replace when it’s not your money 💰 keep up the great work, MarkUK
some people just dont have the desire or will to take a chance.....nothing better than taking an engine that someone gave up on and putting it back to work!
I'm not a Cummins expert but I think that was the exhaust valve bridge, and the reason for it popping through the intake was it not exhausting the gases out of the cylinder because the exhaust valve wasn't opening and when the intake valve open all the pressure built up and was escaping through the intake valve.
Thanks for the video J.C. Ive been in lockup (hospital) all weekend so far. I doubt ill get my way and get out early lol. My boys grandpa brought him to get a 300 6 cyl for his 79 ford. The 302 had a cracked block. Unfortunate.. Hes making headway though summer vacation will soon be upon him then he'll be hoarding my shop lol. Thanks again for the entertainment and "getting learnt!"
200k isn't much mileage wise, last fleet I worked for had a little Sterling flatbed with the same 6.7 in it, last I recall it had well over 600k on it and it was still running great. While I was there I cleaned the gunk out of the EGR system and changed the water pump and tensioner so it would quit eating belts, but other than that it still ran great.
Hey j.c Smith discovered your channel about a month ago and watched all your videos since just wanted to say I like what you guys do love the Ford super duty and medium duty international trucks and just enjoy them all good job to you and your family
welcome michael! glad you enjoy the channel....we should be back in the swing of videos now that the weather is warming up. i have lots of trucks to fix so there should be plenty of videos and often.
Yeah buddy she sings like a canary and purrs like a cat in the cream jar. So happy for you, I saw that rocker thing on a cat engine way back in the years. Old dozer had a million hours figuratively speaking and the quick fix was to un hang that valve that was open and run it off the hill and down to the shop for a winters project. Saved that cat and we was able to close up that road so the forest service didn't have a problem with us for next year/LOL. Great save and fun for me, felt like I was there listening to you coach me like when I started pulling wrenches for dad... he kinda cuffed you if you made a mistake twice. Thanks again for sharing
I can tell you dealing with these 6.7s all the time they are great engines and have seen a many of the 250.000 plus only problems we have is aftertreatment
@@j.c.smithprojects thats because those fleet co. bosses dont want their mechanics wasting their time diagnosing problems, they only want wrenches turning. watched 1 truck go from 1 mechanic, who diagnosis a seized motor correctly to a second mechanic, who spent a week, starting to diagnosis what part seized in that motor, then got sent to the dealership comes back a week later with the same seized motor diagnosis, and sits for 4 weeks before the motor is replaced, by a 3rd mechanic. I was the first mechanic. politics can really mess up a fleet operation, so can impatience!!!!!
I don't know if you've found out yet or not, but you can't buy the valve keeper separate from the rocker. you have to buy a whole new rocker and you need it for accurate valve lash and rod travel. (Thats how it was explained to me anyways, when mine fell off while I did the head gasket on my 6.7 Cummins in my 1 ton)
I put the arp rocker arm bolts on my 6.7 @ 300k miles... i think the factory bolts stretched a little... all my valves were slightly out of adjustment...
How reliable are these 6.7? I keep seeing them in med-duty trucks. The company I work for only uses International and Dt466. We still have 2 mechanical DT's. Is one superior over the other? Navistar is putting the 6.7 in place of 466 now. Used for hauling milk and dairy products everyday 33k gvw. Thanks for the vids J.C.
most scan tools for medium and heavy trucks are very expensive to own and to keep current. if you just want a code reader than can show some data, there are some inexpensive options....what are you looking for in a scan tool? that truck would not be my first choice. i would prefer a 2007 and older dt466 or a 6.7 cummins in that international. maxxforce engines have a much higher failure rate than the others i mentioned.
whe run these engines in public transport busses (40ft long) whe got a series of 40 of these busses they all have done over 650.000 miles( 1,100,000km's) whe just replaced 2 enignes , one broken valve and another crank baring had gone so ... like the cummins good engines but whe replase the oil every 20.000 miles go cummins !!!! btw i am from holland , europe
Wow that guy lucked out big time with the valve just being stuck open so lucky to have had that minor kind of problem could have been way worse lol good job happy hunting bro
The valve was not stuck open, the exhaust rocker was not doing anything so the intake valve was acting as both intake and exhaust, that's why it was popping through the intake.
Hey JC, what oil do you recommend for these 6.7 Isb engines? Just bought a truck with this engine and trying to save some money and do it myself. It’s a 2015 6.7 isb
i use rotella 15w40. some use delo, or mobile delvac. just preference. i see it this way, the oil is only as good as the filters and the frequency they are changed.
@@rearspeaker6364 I was just being sarcastic, it depends on the conditions. I work at Cummins and have seen it happen in a day cause of the dusty job site when someone decided to leave the DIRTY air filter out.
i dont think it was lack of service.....it was not paying attention to what he was doing. i think he ran the overhead and forgot to tighten the jamb nut on one of the adjusters.
HeyJC I have an isb in my 2008 freightliner and it’s misfiring I changed its injectors replaced the rocker arms and it’s still missing no signs of electrical wiring problems do you have any advise on what could possibly be causing this?
did you change the injectors and rockers to try and fix the miss? do you hear anything abnormal in the intake? re-check the valve bridges? if one is not in correctly it will hold a valve open.
J.C. SMITH PROJECTS The problem is on number # 6 cylinder and michanic changed just that injector first but realized the injector wasn’t the problem after he charged me to do that it’s after that I went and checked myself and realized the rocker rocker arm was bad so I checked and changed the bridge and the rocker arm and they are both seated correctly I also adjusted them to the correct ratio setting and the miss is still on # 6 cylinder
Scrap it???? Someone doesn't know what these engines are worth, even if this was bad is still worth money to someone who would rebuild or use it for parts, getting it running is worth money touse in something else to work for ya or in a truck to sell.... but scrap it, no way, that's like throwing money out the window.....glad to see your hunch paid off and it wasn't a hard fixand of course it cost anything but time to fix....
of all the trucks i mess with in a year.....i usually only take one or two loads of scrap into the yard each summer. there is usually a use for most things. i was so happy that it was a simple fix. i moved onto the other truck right after that. so the next video is ready.
Hard to believe an entire truck is being parted out over such a simple fix! Great video!
Good score J.C.!
I never get that lucky - if that were mine, the crank would've been twisted ... 😂
this is the second time it has happened to me. usually i would have to take the head off , find head damaged, piston damaged, cylinder wall damaged and so on. this will give me a good engine to use in something else.
@@j.c.smithprojects - Sweet! Glad that worked out!
Glad someone had sense enough to save this Cummins. She's prob still running somewhere today.
That could have been a costly repair ... you got lucky! Thanks for saving the Cummins from the rust bin!
that is my one "lucky repair" for the year....i guess the rest will be more involved. i need to find a good solid old ford truck body to put on that frame...
@@j.c.smithprojects YES! Or .. an old international. 😎 And ... drop it down REAL low!
Great video. I know little about diesels, however I learned a lot from your two vids on this engine. Thanks, keep up the good work.
Lucky, very lucky. I overhaul these motors for the bus companies on a daily basis. Major top end problems are dropped valve heads, valve seats and broken valve springs. Cracked heads are common, hence the dropped seats. If a valve has dropped, it often cracks the cylinder wall as the piston pushes sideways. The plastic keeper on the rocker is not available separately, but later rockers have that part deleted and the cups are held in place by swaging. The correct torque for the rocker hold down bolt is 36mm. Valve settings as per manual for your motor spec. Usual bus settings are 10 and 20 thou. I set them at 9 and 19 to let the new parts bed in a little.
Note the engines I deal with have often got more miles than the starship enterprise, so don't sweat it with your motor.
Thanks J.C. i lam new to your channel and already learning new things excellent job on the diagnosis of that valve bridge being off and lucky also.
Great job JC!
Nothing better than experience and common sense!
2 thumbs up from here
Doug@ the "ranch"
i think luck was in there too doug. another good engine ready for a new home.....what will it be????
@@j.c.smithprojects You'll amaze us with something unique I'm thinking....Very happy for ya that it was a simple fix and you netted a good running engine!
Have a great day, best to Mrs. JC as well!
Been watching your channel now for 12 hours......I'm addicted...It's fascinating :-)
Awesome thanks so much for sharing this with us ! It's always pleasant to find out that it's a really simple fix but you always have a expect the worse and like you , hope for the best ! Great job 👍
Love your videos man. All the super duty info is awesome. Very talented mechanic sir
" he must have more money than i do" story of my life
Sounds like money glad to see that keeper down there I've seen it before on those was hoping that's what it was but like your videos a lot your a great mechanic with vast knowledge in ur field I'm in marine field but enjoy ur videos a lot
Thanks J.C. !! Great videos on the Cummins ! I learned a lot from your videos..:)
Hi Jc and mrs Jc, just like to say who ever said scrap it ask them if they would like to put there hand 🖐 in there pocket for a replacement? Easy to say replace when it’s not your money 💰 keep up the great work, MarkUK
Nice work!! That Cummins is ready for another 200k.
Excellent Video, So glad it worked out into your favor. The guy who said scrap it can eat his words LOL
some people just dont have the desire or will to take a chance.....nothing better than taking an engine that someone gave up on and putting it back to work!
@@j.c.smithprojects no guts, no glory!!
You fixed the Cummins and rust proofed the truck beside it. Lol
multitasking don!
@@j.c.smithprojects good job
Well, that's one heck of a result. With the other bits sold down the road that's pretty much a very good free engine...
yes sir! free is a good amount to have in a 6.7 and a manual trans! now......what to do with it??
@@j.c.smithprojects It certainly is. I'm sure you've got ideas as to what to do with it, maybe involving a certain classic corn binder cab...
I'm not a Cummins expert but I think that was the exhaust valve bridge, and the reason for it popping through the intake was it not exhausting the gases out of the cylinder because the exhaust valve wasn't opening and when the intake valve open all the pressure built up and was escaping through the intake valve.
Awesome. Glad it was cheap and easy. It pays not being lazy and just digging in. Great videos, I really enjoy your channel.
thanks bill. i am glad to hear you enjoy what we do. that is what makes it all worth it.
Thanks for the video J.C. Ive been in lockup (hospital) all weekend so far. I doubt ill get my way and get out early lol. My boys grandpa brought him to get a 300 6 cyl for his 79 ford. The 302 had a cracked block. Unfortunate.. Hes making headway though summer vacation will soon be upon him then he'll be hoarding my shop lol. Thanks again for the entertainment and "getting learnt!"
hope you get out of the hospital soon! persistence is what will get that truck done.
200k isn't much mileage wise, last fleet I worked for had a little Sterling flatbed with the same 6.7 in it, last I recall it had well over 600k on it and it was still running great. While I was there I cleaned the gunk out of the EGR system and changed the water pump and tensioner so it would quit eating belts, but other than that it still ran great.
Hey j.c Smith discovered your channel about a month ago and watched all your videos since just wanted to say I like what you guys do love the Ford super duty and medium duty international trucks and just enjoy them all good job to you and your family
welcome michael! glad you enjoy the channel....we should be back in the swing of videos now that the weather is warming up. i have lots of trucks to fix so there should be plenty of videos and often.
Yeah buddy she sings like a canary and purrs like a cat in the cream jar. So happy for you, I saw that rocker thing on a cat engine way back in the years. Old dozer had a million hours figuratively speaking and the quick fix was to un hang that valve that was open and run it off the hill and down to the shop for a winters project. Saved that cat and we was able to close up that road so the forest service didn't have a problem with us for next year/LOL. Great save and fun for me, felt like I was there listening to you coach me like when I started pulling wrenches for dad... he kinda cuffed you if you made a mistake twice. Thanks again for sharing
I can tell you dealing with these 6.7s all the time they are great engines and have seen a many of the 250.000 plus only problems we have is aftertreatment
It's always good when it turns out to be something simple.
it seems like i get more of these from fleet companies than in the private sector.
@@j.c.smithprojects thats because those fleet co. bosses dont want their mechanics wasting their time diagnosing problems, they only want wrenches turning. watched 1 truck go from 1 mechanic, who diagnosis a seized motor correctly to a second mechanic, who spent a week, starting to diagnosis what part seized in that motor, then got sent to the dealership comes back a week later with the same seized motor diagnosis, and sits for 4 weeks before the motor is replaced, by a 3rd mechanic. I was the first mechanic. politics can really mess up a fleet operation, so can impatience!!!!!
I don't know if you've found out yet or not, but you can't buy the valve keeper separate from the rocker. you have to buy a whole new rocker and you need it for accurate valve lash and rod travel. (Thats how it was explained to me anyways, when mine fell off while I did the head gasket on my 6.7 Cummins in my 1 ton)
Lucky find and repair. But you went and found it, which is always the key.
Been long time since adjusting valve tappets
Would love to have this one in my motor home in place of the 5.9 ISB. And this one has the J.C.S. stamp of approval.
I made sure I left this on my TH-cam so I could finish watching the next day
JC for the win!! Sounded like Mrs JC got oil in her face, thanks for sharing the problem and repair
she did and she wasnt happy about it either.
Bloody Legend mate ! 👍👍😃🎸
Thank you for making this video!! You’re awesome
thanks for watching todd
Love the switch. Nice find.
Do you have a video to show what wires you need to test fire or a diagram to help a guy build a stand alone harness
Parted out the whole truck over something that could of been diagnosed in 5 minutes
These engines are good for really high mileage in the UK. We have them in iveco and daf.
Easy win buddy! Good job!
Heck yea man. Good save on the motor!!!!!!!!
Great video JC
I have the same motor, I am not a mechanic, I play one on TV, and at work...
Cummins; takes a licking and keeps on ticking.
Good morning. Nice diagnosis. I've seen that with a couple of ford 6.0 diesels. Excellent job. Keep up the good work.
I'm curious as to what happens with all these repaired vehicles.
You need to buy the guy who checked the valve lash a beer.
I put the arp rocker arm bolts on my 6.7 @ 300k miles... i think the factory bolts stretched a little... all my valves were slightly out of adjustment...
Awesome job JC
Good deal lucked out on that one. Sounded good and the hillbilly hose clamp was alright
i dont need anything fancy.....as long as it does the job. those were just pieces of scrap steel from taking a box off.
So happy for you man
What are the three cables that u connected for it to cranck up
How reliable are these 6.7? I keep seeing them in med-duty trucks. The company I work for only uses International and Dt466. We still have 2 mechanical DT's. Is one superior over the other? Navistar is putting the 6.7 in place of 466 now. Used for hauling milk and dairy products everyday 33k gvw. Thanks for the vids J.C.
6.7s hardly have any issues, it's mainly the emissions behind them that will cause problems. I work on these almost everyday
on the 03,- 07 in fleet engine wiring issues-open connections
Hopefully you will get a lot of use out of it.
Did you ever get this running and revving with the pedal?
Good News! Nice easy fix.
life is good!
That's a good motor
What wires control the turbo brake on the ISB 6.7 cummins engine thanks
Mr lm from k s a if I want the engine with transmission complete how much it will cost my
Caught a lucky break- good deal! Nice when it works out that way. That going to be part of the old IHC project? 😁
not sure yet but it is in the running as a possibility!
Good to go...the driveway looks like it's packed in hard & tight too
actually, we have sold off a bunch of trucks and have a little wiggle room now.
@@j.c.smithprojects l just liked the way it packed hard & tight...& thinking it can handle standing water if you don't make sharp turns
Perfect!
Could you tell the rest of us how to wire that up on three wires to run I can’t no way afford a stand alone harness for a poor man project
Great video, subscribed!
Great fix JC 🤣
JC what is a good scanner for these type trucks? thoughts on 2010 IHC with a Maxforce DT466
most scan tools for medium and heavy trucks are very expensive to own and to keep current. if you just want a code reader than can show some data, there are some inexpensive options....what are you looking for in a scan tool? that truck would not be my first choice. i would prefer a 2007 and older dt466 or a 6.7 cummins in that international. maxxforce engines have a much higher failure rate than the others i mentioned.
Got my fingers crossed for you jc
thanks...i think it paid off!
Shame no one pulled the valve cover off before disassembling the truck could have saved it
that how some so called "mechanics"do it- and they are the boss's pet f**k too!! politics!!!
Alot of oil pressure dang clear across to the other truck impressive
pretty nice huh.....i am sure the wind had a role in it too!
@@j.c.smithprojects best thing for a diesel is good oil pressure
Crazy they scrapped the truck without even looking into it. Sweet deal for you though!
whe run these engines in public transport busses (40ft long)
whe got a series of 40 of these busses they all have done over 650.000 miles( 1,100,000km's)
whe just replaced 2 enignes , one broken valve and another crank baring had gone
so ... like the cummins good engines
but whe replase the oil every 20.000 miles
go cummins !!!!
btw i am from holland , europe
Sounds way better after you removed the bridge laying in the bottom
Yup, engines do sound a lot better when all the pieces are where they're supposed to be...
You amaze me....is there a difficult job that you do do? You take these jobs on like it's no big deal.
Wow that guy lucked out big time with the valve just being stuck open so lucky to have had that minor kind of problem could have been way worse lol good job happy hunting bro
The valve was not stuck open, the exhaust rocker was not doing anything so the intake valve was acting as both intake and exhaust, that's why it was popping through the intake.
Hey JC, what oil do you recommend for these 6.7 Isb engines? Just bought a truck with this engine and trying to save some money and do it myself. It’s a 2015 6.7 isb
i use rotella 15w40. some use delo, or mobile delvac. just preference. i see it this way, the oil is only as good as the filters and the frequency they are changed.
J.C. SMITH PROJECTS
Thanks for the reply. I appreciate the videos and the insight you provide.
If got 590,000+ on a 3.6 v6 gas engine. That Cummins should be good for at least that. 👍😁
Nice Video, to bad you dusted the engine by running it without an air filter.
that takes about 3 months.
@@rearspeaker6364 I was just being sarcastic, it depends on the conditions. I work at Cummins and have seen it happen in a day cause of the dusty job site when someone decided to leave the DIRTY air filter out.
its cool. i was talking about 3 months a 5 days a week intercity driving-on road, now offroad,very dusty, yep, 1 day.
Sooooooo what now sell???
Maybe lack of service on that one, had a few that way.
i dont think it was lack of service.....it was not paying attention to what he was doing. i think he ran the overhead and forgot to tighten the jamb nut on one of the adjusters.
Love it
Do you know the ECM wiring for a 8.3L Cummins CAPS system to test run the engine before putting into a truck?
go to cummins quick serve website. enter your engine serial number and you can get a wiring schematic. very good diagrams and connector orientation.
@@j.c.smithprojects Thanks,
Nice vid thanks
HeyJC I have an isb in my 2008 freightliner and it’s misfiring I changed its injectors replaced the rocker arms and it’s still missing no signs of electrical wiring problems do you have any advise on what could possibly be causing this?
constant misfire, misfire under load, or random misfire?
J.C. SMITH PROJECTS it seems constant because I haven’t driven it since I did the work to it but when it idles it’s still idling rough with the miss
did you change the injectors and rockers to try and fix the miss? do you hear anything abnormal in the intake? re-check the valve bridges? if one is not in correctly it will hold a valve open.
J.C. SMITH PROJECTS The problem is on number # 6 cylinder and michanic changed just that injector first but realized the injector wasn’t the problem after he charged me to do that it’s after that I went and checked myself and realized the rocker rocker arm was bad so I checked and changed the bridge and the rocker arm and they are both seated correctly I also adjusted them to the correct ratio setting and the miss is still on # 6 cylinder
youre lucky the valve was stuck closed...saved the piston and the engine basically
Dropped valve or end of injection need a piston just a guess
Who ever said junk it probably hates cummins. Service that beast and run her. Taken care of there is many years of use left.
It’s pretty hard to hate Cummins no matter your brand loyalty... maybe not the sharpest tool in the shed?
i dont know how anyone could hate the small cummins engines......the isx cummins?? yes i could see how some would hate that engine.
Indian Cummins. .
Scrap it? I want that guys money
Mint
Winner winner chicken dinner👍... I bet y’all have a bunch of those hillbilly hose clamps layin around
more of those than we care to mention...
Why use the vice grips. You could have used bolts thru those holes
i had vise grips in my toolbox.....i didnt have any bolts
@@j.c.smithprojects i guess it works
i,d shoe horn that into my 97 f450,
Chassis for loadstar cab.
you have been paying attention to the hints brandon!
Why scrap what you can repair? It takes less energy to repair a broken engine, than to scrap it and it be turned into something else ;)
Crappy service tech that just condemned the whole engine while they just need to pull the vavle cover there lose your grain
i have seen many trucks condemned by a mechanic only to find it was an easy repair. sometimes it pays to take a chance.
Scrap it???? Someone doesn't know what these engines are worth, even if this was bad is still worth money to someone who would rebuild or use it for parts, getting it running is worth money touse in something else to work for ya or in a truck to sell.... but scrap it, no way, that's like throwing money out the window.....glad to see your hunch paid off and it wasn't a hard fixand of course it cost anything but time to fix....
of all the trucks i mess with in a year.....i usually only take one or two loads of scrap into the yard each summer. there is usually a use for most things. i was so happy that it was a simple fix. i moved onto the other truck right after that. so the next video is ready.
Why would u scrap it scrap aint shit you can get 1200 for the core
what a bummer. You should of just fixed the motor first before parting out.
Какой тоннаж у вас, у на возят по 60 т зерна на этом моторе. Мотор говно.