I'm getting some excessive blow-by. To keep from getting gassed out, I had to run the passenger side pvc below the car. The problem is most noticable on the highway when I completely let off the gas and there is engine braking (with the 3.73's). A couple seconds after I let off, a huge billow of grey smoke pours out of the back of my car, like my car is on fire. It will then stop if I apply the gas again.

I understand that the problem is a result of oil getting past the piston rings, but how much of a problem it that really? I do go through more oil now too. I just get a little worried when I run it under boost. Is this a sign that the engine could die sometime in the near future?

 

If it smokes when you get off it doesnt that mean the heads are the problem?

Well if it is the rings, I had a turbo Dodge that blew a lot of smoke and an pretty well for a long time, so I dont think that alone would be any major cause for concern.

 

Well, it smokes all the time, kind of bad, but it's the worst how I decribed it above.

Also, I'm not positive if it is the rings, I was only guessing.

 

a wild uneducated guess: maybe its your turbo? Doesnt blow smoke when it spools up but when its idling, its blowing like crazy, who knows, im not a mechanic

 

well my 305 burns oil (go figure ) whenever i start it up or get on it, but its real bad when i get on it and past 3k rpm so i figure ive got toasted rings at 100k miles...

 

I'm gonna say no on the rings and bet my money on valve guides and intake gasket. 100K on rings is nothing nowadays.

 

Well i just put on that performer tbi intake last summer and i did a darn good job of cleanin up the heads so the gasket would seal up nicely so the intake cant be it. Valve guides or stem seals??? i kno the stem seals go bad in these cars but my old man had them done at sumwear around 50k, but if its valve guides thats bad isnt it? i mean couldnt that cause the valves to not seat properly with the head?

 

I think you're sucking past the valve stem seals, or though the guides anyways.

A turbo with a bad seal will do that as well.