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smoke!!


intern8tion9l

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yeah so heres the latest: when i let the car idle to warm up, it starts blowing out clouds of smoke. also when i downshift and i'm coasting in low gear/higher rpm (say an exit ramp) a cloud of smoke will start puffing out. this thing is really starting to get to me and its like every time there is something new its something wierd that i don't know about

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It's most likely a turbocharger oil seal leaking(bluish colored smoke). If you find oil in your intercooler charge pipes, the cold side/compressor seal is leaking, if the pipes are clean, it's going to be a turbine side seal. Check the TGP section and/or the TGP board, there have been a lot of topics like this in the past.

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19cutlass94 also suggested i might be losing a cylinder due to a bad spark plug....the smoke is white and does have kind of a nasty fuel smell to it. i am running ngk iridium plugs, of which i have heard some bad reviews.....

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well looks like we have a winner. one of the plugs is dicolored, wet, and smells pretty nasty. of course its one in the back.....but anyway, is it ok for me to change just one, or should i change them all?

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do them all and get away from those "higher performance" plugs. The AC Delco R42LTS is what is meant to be in these cars, I have never fouled one when there wasn't a bad coil, ICM, or injector. Speaking of which, have you determined what caused the fouling?

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I've also never had a plug foul w/o having other issues. If the new plug you swap in gets fouled again, I would start looking at the injector on that cylinder(remove the fuel rail/injectors from the intake manifold and then check for leaks while the rail is pressurized). I recently replaced three injectors in my TGP, they were leaking pretty bad(it's very common for the early multec style injectors to fail). My car smoked at startup w/ the leaky injectors for what it's worth.

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Since the car is burning a white smoke, you could have a coolant leak. Id do a compression test on all the cylinders and compare your results. The fuel smell could be the injector or a leaky valve or gasket.

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