SnowBird
15+ Year Contributor
- 528
- 0
- Jul 9, 2006
-
Cleveland, Ohio/Tampa,
Florida
This is a rebuilt engine, only 5 miles on it and so far Im hoping this is all the assembly lube I dumped down the cylinders while it sat for 4 months before being started. The head came off a running car that didnt smoke and I have a Felpro gasket that should help with sealing if anything.
Car starts to smoke WHITE/GRAY right about when the thermostat opens making me believe its obviously a coolant issue. I have absolutely no oil in water or vise versa, no notice in coolant loss and exhaust doesnt smell like coolant at all. When I get on the gas hard it clears out until I let off, then it coughs out more. Car not overheating at all.
Car still boosts fine, makes power, the whole nine yards. Gotta fix this so I can properly break it in.
1. compression check is still great ecspecially for a new engine with unseated rings.
2. turbo not blowing oil (could be leaking internally but doubt it)
3. FIAV check, I looped the coolant hoses bypassing the fiav to make sure its not leaking.
4. Leakdown test, I performed this by applying 80psi from a compressor to each cylinder at TDC with the coolant cap off to see if coolant bubbled at all. Nothing.
5. I had oil leaking from my oil return off the turbo, which was dripping all over the downpipe, but I fixed this and it still would smoke.
6. I checked out my turbo oil feed line thinking it was kinked and the turbo was burning up the oil, but as you saw in #5 it was pouring out oil, so I dont think its kinked.
My car has serious idle surge due to a messed up ISC, but I dont think it would be white from it running rich/lean for the split second that it surges.
Im stumped. I can only think its a cracked head (that was fine off a running car), head gasket maybe, or Im leaning towards leaky VALVE seals. They looked pretty gunky, but I didnt see it as a problem. I might just tear it down, have the head decked/checked out and slap another gasket on for the hell of it.
Any help is appreciated greatly, I apologize in advance for the fact that I am unable to frequently get on here and answer any questions one might have.
Car starts to smoke WHITE/GRAY right about when the thermostat opens making me believe its obviously a coolant issue. I have absolutely no oil in water or vise versa, no notice in coolant loss and exhaust doesnt smell like coolant at all. When I get on the gas hard it clears out until I let off, then it coughs out more. Car not overheating at all.
Car still boosts fine, makes power, the whole nine yards. Gotta fix this so I can properly break it in.
1. compression check is still great ecspecially for a new engine with unseated rings.
2. turbo not blowing oil (could be leaking internally but doubt it)
3. FIAV check, I looped the coolant hoses bypassing the fiav to make sure its not leaking.
4. Leakdown test, I performed this by applying 80psi from a compressor to each cylinder at TDC with the coolant cap off to see if coolant bubbled at all. Nothing.
5. I had oil leaking from my oil return off the turbo, which was dripping all over the downpipe, but I fixed this and it still would smoke.
6. I checked out my turbo oil feed line thinking it was kinked and the turbo was burning up the oil, but as you saw in #5 it was pouring out oil, so I dont think its kinked.
My car has serious idle surge due to a messed up ISC, but I dont think it would be white from it running rich/lean for the split second that it surges.
Im stumped. I can only think its a cracked head (that was fine off a running car), head gasket maybe, or Im leaning towards leaky VALVE seals. They looked pretty gunky, but I didnt see it as a problem. I might just tear it down, have the head decked/checked out and slap another gasket on for the hell of it.
Any help is appreciated greatly, I apologize in advance for the fact that I am unable to frequently get on here and answer any questions one might have.