Head Gasket?????

[Digger]

How do you tell if you have blown a head gasket? I have a constant flow of white smoke coming out the stacks. The oil seems to be fine turbo also. Truck does seem to misfire. Is it fuel or is it a head gasket. I just added the TST PMCR a couple of days ago which brought my boost up to 45-48lbs, along with whatever it does to the cylinder pressures. I have thrown the following codes.

p0633 skim key not programmed in PCM

p0606 internal ECM processor

p0107 manifold absolute pressure sensor low

p0073 ambient temperature sensor high



Thanks for the help

Dan

 

[bmoeller]

Check for water in the oil or the other way around.



With engine running, remove the radiator cap and check for air bubbles.



Compression check.

 

[Digger]

Thanks for the help. I am not sure how to compression check a diesel.



Dan

 

[DavidC]

Check this link. Shows adapter for compression or leakdown test. I personally prefer the leakdown. If the head gasket is bad with the leakdown you will have plenty of bubbles in the radiator.



https://www.turbodieselregister.com/forums/showthread.php?s=&threadid=102632&perpage=15&pagenumber=1



Dave

 

[ToolManTimTaylor]

Originally posted by Digger

I have a constant flow of white smoke coming out the stacks.



I have thrown the following codes.



p0633 skim key not programmed in PCM

p0606 internal ECM processor

p0107 manifold absolute pressure sensor low

p0073 ambient temperature sensor high



Thanks for the help

Dan

White Smoke could be a bad injector, timing is often a factor when white smoke is excessive. Possibly the injection pump can also have problems that result in white smoke. You did just add the TST PMCR a couple of days ago.





The IAT could be throwing off a different fueling curve as well thinking it is hotter than actual (P0073) temp



Map sensor sounds like it was unplugged while running or you had a bad connection with the TST.



Skim ... No idea but the ECM worries me.



I would unplug and take the TST PMCR out of the loop and try.



However a HG may very well be the issue but try the above as well.

 

[rblomquist]

I lost a HG about a year ago. The truck was blowing coolant out of the catch tank and eventually I saw the trail of fluid leaking down the block near one of the freeze plugs (wasn't freeze plug though). Oil and coolant never mixed but the other 2 things were very noticeable.

 

[Digger]

Drained the oil today. No coolant mixed in. Took turbo off the exhaust housing had oil baked inside. It looked and felt like grease. I am assuming that a seal or something has gone bad internally in the turbo. Now which turbo do I buy?



digger