I'm absolutely lost at this point as to what could be causing my car to smoke. It only smokes when it sits like over night, but not if you start it up on the same day. So it'll smoke, and I mean a lot of smoke, in the mornings before I go to work, but when I leave work to drive it home it doesn't. I did the champagne test on it today and no bubbles were coming out of the top of the radiator, and I haven't lost any coolant, it's still sitting around full in the overflow. I haven't lost any oil either, it's still sitting at full on the dipstick.

Now the only thing I can think of is my car backfires a lot, so it's probably running rich, but fcs run rich by themselves. I would think that if the smoke is because it's running super rich it would flood and not start. The smoke coming out the back is white and I can't describe the smell other than burnt.

Any suggestions of further tests? or fixes?

 

Oil seeping into the chambers. via oil injection lines, or oil control rings.....etc....

 

Well I thought about that and so I did the oil control ring test where you rev up to about 3500 rpms while driving and then stab the throttle a couple times and it doesn't smoke when that happens. Wouldn't I be losing oil then? How could i check the injection lines to see if they're leaking? Isn't oil smoke blue?

 

Yup. Oil smoke is very blue. My car smoked alot when it would flood, and it was pure white smoke. I don't have any coolant leaks either.

 

Did you ever fix your problem? I know that my pressure sensor is throwing fits so maybe that's what's causing it to flood. I thought if it flooded that badly it wouldn't start though?