mase5701

After driving about a mile I noticed a good amount ofwhite smoke coming out from behind the intake manifold on the passenger side, maybe from he heads I couldn't tell.....and There were a couple drops of oil on top of the intake manifold right around the PCV valve (which very easily pulls out, not sure if that has a bad seal? If there's a vacuum leak here I don't understand why that would cause the smoke......)

Anyway I shut her down right away, and the next day went to start her up to investigate further, and no smoke she ran totally fine.

Is this a possibly failing manifold gasket which creates an intermittent problem? Or maybe just *** hole work done with the aftermarket heads the car has? (Bought a modified C4 was probably a mistake being my first one)

Any guidance would be aprreciated on where to go next in terms of diagnosing..


Thanks yall

GREGGPENN

White smoke is indicative of coolant/water. If it does it again, pay attention to the smell. Assuming you're not running pure water, it will smell like antifreeze.

In the mean time, check your coolant level. See if it's low. Head gasket leaks (or manifold leaks) can be intermittent depending on things like the difference in heat/expansion times of the iron/steel block vs the aluminum on top of it. Also, the load on the engine can cause more rapid/slow heating up of the two dissimilar metals.

Leaks get worse with time and will become more self-evident. Pressure testing the coolant system make reveal the problem. You can also look for evidence of coolant in the oil.

Sounds like you've had head work recently?

GUSTO14

Mase, since you have not included much information in your profile, it would be helpful to let us know what year and or engine you're dealing with. L98, LT1 or 4, and any obvious modifications that could have contributed to the problem, would probably get you more meaningful responses.

Folks here do try to help, but sometimes if little information is provided, they'll skip responding until more information appears. Unfortunately that just delays you getting the help you're looking for.

Good luck, and welcome to the Corvette Forum,

GUSTO

383vett

Drive it around until the smoke appears. Instead of shutting it down, look and try to isolate the source. It's hard to diagnose the problem over with a keyboard. Source of smoke will be oil, water or exhaust.

Dt86

There are UV dye kits you can buy to confirm what fluid is leaking and from where.