valve stem seals (?)

[gkrcr882]

Re: valve stem seals (?)

#5 got cooked pretty badly, so piston/ring damage is possible. #6 has a thick coating, that confirms loss of oil control. Have you had any kind of a misfire or lack of power? By the way that plug looks I'm betting #6 is a dead cylinder. #2 looks to be ideal, while #3 looks lean. A small amount of oil on the compressor side of the turbo and IC is normal if you have the stock PCV system, but that is indeed excessive. There should be no oil whatsoever on the turbine side; that usually comes from an internal engine failure or a failed turbo seal, possibly from a restricted oil return. Leak down check is in order to determine where to go from here.

 

[i8av8]

Re: valve stem seals (?)

That is no valve causing your #6 plug to look like that. I would bet you have a broken piston. Start your motor, open the oil fill cap, put your hand over it, if you getting pressure, you have problems.

pressure? do you mean suction? put a piece of paper over the opening and it was staying in place while in idle.

 

[gkrcr882]

Re: valve stem seals (?)

No, he does mean pressure. Pressure coming out of the oil fill means you have excessive blowby and the rings are toast; Combustion pressure goes past the rings, into the crankcase, through the PCV and out the oil fill when the engine is running.

 

[i8av8]

Re: valve stem seals (?)

no loss of power or backfiring. believe it or not but the truck has been running a lot better now than it ever has. there was a problem a good ways back that i could never figure out. it did it once i got into 4th gear. the problem has gone away once the truck started smoking.

i have a date to do a compression test on sunday. will post results.

thanks for your input/thoughts guys. :tup:

 

[Syclone#2960]

Re: valve stem seals (?)

Damn Nick! not looking good...I will call you later today.

 

[WyoSyclone]

Re: valve stem seals (?)

What does the inlet side of the turbo compressor look like? If it's clean you could just have a blown seal in the turbo (reason for the oily plugs).. if there is no blowby coming out of the breathers. broken porcelain on #5 could be something that went through the motor.

I'd put a new set of plugs in it, disconnect the turbo and drive for about 5 or 10 miles then pull the plugs again and see what they look like. With that much oil coming out of the turbo you'd have to be sure and somehow catch it so it doesn't get down on the exhaust and start a fire. Is that a burned through area around the wastegate on the turbo??

 

[i8av8]

Re: valve stem seals (?)

What does the inlet side of the turbo compressor look like? If it's clean you could just have a blown seal in the turbo (reason for the oily plugs).. if there is no blowby coming out of the breathers. broken porcelain on #5 could be something that went through the motor.

I'd put a new set of plugs in it, disconnect the turbo and drive for about 5 or 10 miles then pull the plugs again and see what they look like. With that much oil coming out of the turbo you'd have to be sure and somehow catch it so it doesn't get down on the exhaust and start a fire. Is that a burned through area around the wastegate on the turbo??

excuse my turbo ignorance but, compressor side is the exhaust side correct?

sorry about the blurry pic of #5 plug but the #5 plug isn't broken. it is brown dry crust build up. i chipped away some of the crust before i snapped a pic.

there is no smoke coming out of the breather filter on the drivers side valve cover.

 

[WyoSyclone]

Re: valve stem seals (?)

excuse my turbo ignorance but, compressor side is the exhaust side correct?

sorry about the blurry pic of #5 plug but the #5 plug isn't broken. it is brown dry crust build up. i chipped away some of the crust before i snapped a pic.

there is no smoke coming out of the breather filter on the drivers side valve cover.

Compressor is the intake/fresh air side... turbine housing is the exhaust side. Take the crossover tube (across the top of the radiator) that runs from the filter box to the turbo off, and look for oil at the inlet (center) of the turbo. If there is little to no oil there then a seal inside the turbo has gone bad, resulting in the oil at the outlet of the compressor and throughout your intake tract.

 

[slpcamaross97]

Re: valve stem seals (?)

wow. time to preform a cylinder leak down test. guessing you will have some smoked exhuast valves or even more.

 

[i8av8]

Re: valve stem seals (?)

Compressor is the intake/fresh air side... turbine housing is the exhaust side. Take the crossover tube (across the top of the radiator) that runs from the filter box to the turbo off, and look for oil at the inlet (center) of the turbo. If there is little to no oil there then a seal inside the turbo has gone bad, resulting in the oil at the outlet of the compressor and throughout your intake tract.

small puddle of oil

shaft has very little play side to side but not in or out

about as clear as i could get it

about as clear as i could get it

 

[WyoSyclone]

Re: valve stem seals (?)

Looks like a seal went out on the turbo.... that's what's oiling up the intake and cylinders.

I would:
1) look for a new turbo or have that one rebuilt
2) do a compression and leak down test
3) put in a fresh set of plugs
4) run a can of seafoam through it to clean it out.

 

[gkrcr882]

Re: valve stem seals (?)

Looks like a seal went out on the turbo.... that's what's oiling up the intake and cylinders.

I would:
1) look for a new turbo or have that one rebuilt
2) do a compression and leak down test
3) put in a fresh set of plugs
4) run a can of seafoam through it to clean it out.

Also be sure to check the oil drain line for any kinks or restrictions. If oil can't drain back to the pan, it will get forced past the seals.