thunder550

iTrader: (70)

How much is normal for a 408? I hope I don't have an oil burner.....

TurboGibbs

iTrader: (6)

Sure it isn't steam? Loosing water?

thunder550

iTrader: (70)

I don't think it is, but I'll double check the coolant level.

chevyguy7802

iTrader: (3)

Does it do it when the motor is warm?

Rhino79

iTrader: (7)

The motor we built in the Hauler's truck doesn't smoke any at idle, does burn a little oil though. His has Mahle pistons & low tension rings, forgot the skirt clearance and ring gap, though. They fit in there pretty tight, but still make a little noise cause of the lack of skirt material. His doesn't smoke at all really, but it does burn probably about 1.5 qts. between 3000 mile intervals.

James B.

iTrader: (1)

Oil smoke is blue.
Fuel (rich) is black.
Water is white. I guess this could be "gray."

Visible water vapor at startup is normal and a sign of health. The by-product of complete combustion is water. Once it's warmed up though the exhaust temperature should be high enough to prevent the vapor from condensing into a visible form when it exits the tailpipe - unless it's cold outside.

vanillagorilla

iTrader: (1)

Does is smoke all the time, while cruising too?

thunder550

iTrader: (70)

Not that I can see. I noticed that after a long drive it seems to get worse after it sits and idles a bit, definitely smells like oil, but only after idling for a little bit. When I first park it and look it's not bad at all. I'm just wondering if my pistons shrink a little bit and allow some oil to get behind the rings when they cool down a bit.

Anyway, I bought a compression tester yesterday, I'm going to check it out one of these days to make sure everything looks good compression wise.

Another thought is the crappy stock PCV system, I wonder if maybe I'm sucking oil into the intake? I probably should look into getting an LS6 valley cover.