Well after leaving my truck parked for a couple of weeks now. I fire it up and now I can visibly see oil smoke just a puff at initial start up and gone. If its parked in the shop you can smell hang in the air. As for driving there is no oil smoke under normal driving conditions. Now this might be park of the last bout I ran the exhaust brake and would see it after a long down hill run. I'm starting to wonder if the valve seals are getting sloppy? There is no blow by.

I gave Towhungerford a call and asked him about it. He's agreeing with my it sound like valve seal starting to go south on me. So who do I go to for a good quality valve seal set? Also I know I got to get the tool to do it.

 

http://www.torkteknology.com/products/Cummins-24V-5.9-%26-6.7-Valve-Spring-Compressor-PN-CVSC010.html

Will you be able to use that tool without pulling the head off? I know that the shop that did mine was able to replace all the seals without removing the head.

Yes. You just run the piston up to TDC and then compress the springs. The valves will rest on the top of the piston. So now just change your valve seals.

Oh ok. I think my shop just used compressed air to hold the valves in place. Either way works good I suppose.

Likeoldfords, I gather you had the same problem occur?

Well, the guy I bought my truck from had the head gone through a little while before I got it. Whoever was doing the work didnt have their spring compressor adjusted correctly and ended up tearing all the valve seals up. The truck would smoke for about 10 minutes after a cold start up and went through a ton of oil. It took a lot of time diagnosing to figure out where all that oil was going. I thought there was a serious internal engine issue when it was just a simple mistake made by a shop.

This oil change is up to 2 quarts of oil in like 3-4k miles. So its time to look and see where its going.

I think at the time mine was going through about a quart every 500 miles. I had the seals all fixed up and then it was only going through a quart about every 3000 miles. Over the last few months or so the truck has started to use a lot more oil again, but its not hardly smoking at all. I am suspecting the turbo but I havent pulled it apart yet to find out.

wiggle yer valves  after you   get the springs and old  seals off..   check for  guide wear

the  guides  tend to wear   in a  'line with the rocker'      not  as much   fore and aft.

Edited September 29, 201410 yr by rancherman

wiggle yer valves  after you   get the springs and old  seals off..   check for  guide wear

the  guides  tend to wear   in a  'line with the rocker'      not  as much   fore and aft.

 

Even Towhungerford said the same thing if the seal kit doesn't fix it up then the valve guides would need to be replaced. (Head Job).

Just a thought, but did you inspect your turbo? I know it's brand-spankin' new, but ya never know.

 

And that's good there's no blow by.

Just check the compressor wheel standard up/down movement but no rub. Then no movement in/out. I though about pulling the turbo and checking the manifold for oil. Right now I'm looking for possible ideas and start gather up stuff to handle the project.

Mine doesn't have any blow by either but I do have some play in the turbo. Not enough for the wheel to contact the housing but it does have some movement side to side and a little in and out. Just gotta get the time and money to pull it apart and rebuild it.

I keep reading in posts over and again where folks claim "My engine doesn't have any blow by"...................BS................every engine on the planet has a certain amount of blow by.

Ok. To be sure I borrowed a manometer from the local cummins shop and ran a bunch of tests on the engine, all the time watching the actual blowby pressures. Everything was well in specs according to cummins. Even my cold start up pressures were very much in the green. Now this is all according to Cummins. Everyone might have a different opinion. I just wanted to be sure because like you said W and F, every engine has some blow by. Even new ones do.

I keep reading in posts over and again where folks claim "My engine doesn't have any blow by"...................BS................every engine on the planet has a certain amount of blow by.

 

Ok. Rephrase the comment not excessive blow by. It doesn't blow the cap off nor dance in the hole. I would rather go by compression test than blow by. I've laid under the truck with it idling and it just lightly puffing a light vapor out. Nothing like the CR engines I've seen so far. Unscrew the cap and POP watch the cap go flying...

 

As for information I'm going to talk to Lindy tomorrow at work and see what he's got to say. I really doubt rings and pistons. Runs way too good and no noises. MPG are still up to spec just oil usage is up.

ill be replacing my seals, i got cummins oem seals and will knock em out when the machinist is done. i bought the tool for the job too

Edited September 30, 201410 yr by CUMMINSDIESELPWR

Ok. Rephrase the comment not excessive blow by. It doesn't blow the cap off nor dance in the hole. I would rather go by compression test than blow by. I've laid under the truck with it idling and it just lightly puffing a light vapor out. Nothing like the CR engines I've seen so far. Unscrew the cap and POP watch the cap go flying...

 

As for information I'm going to talk to Lindy tomorrow at work and see what he's got to say. I really doubt rings and pistons. Runs way too good and no noises. MPG are still up to spec just oil usage is up.

My buddys 03 which was totally dusted out and using a gallon of oil every couple hundred miles and actually pushing half of it out the breather didn't even flutter the oil cap on the valve cover.

Not pushing oil other the breather either. Never drips nor is there oil splatter under the truck.

 

Nothing even close to this...

Weird...

 

About week ago I changed oil and both filters and now my oil smoke problem seems to of left. I was only about 1,000 miles over the stock change interval. (7,500 miles)