BLACK SMOKE ?? HELP????!?!!?!?! head gasket
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Joined: Jul 2003
Posts: 28
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Car: 91 Camaro
BLACK SMOKE ?? HELP????!?!!?!?! head gasket
I noticed today that I have black smoke coming from my tailpipes at startup. It only happens after the car has been sitting for awhile. Its a 91 Camaro RS with a 305 TBI. Could this be a head gasket ? Please help!!!!!!!
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Exhaust smoke color generalities:
Black = excessive fuel
Blue = oil in the combustion chamber
White = coolant in the combustion chamber.
A bad gasket causing smoke is generally leaking coolant, and makes white smoke. Since you say it is black, I'd suspect you've got a leaking injector. If in fact it is really bluish rather than black, that's valve stem seals gone bad, which is quite common with our cars.
Black = excessive fuel
Blue = oil in the combustion chamber
White = coolant in the combustion chamber.
A bad gasket causing smoke is generally leaking coolant, and makes white smoke. Since you say it is black, I'd suspect you've got a leaking injector. If in fact it is really bluish rather than black, that's valve stem seals gone bad, which is quite common with our cars.
Thread Starter
Junior Member
Joined: Jul 2003
Posts: 28
Likes: 0
Car: 91 Camaro
Black Smoke
Its Throttle Body Injected TBI. Could this still be the injectors ? This is a mint conditon camaro. Very rare in the area. If it is the valve seals, how much will this be to fix ? thanks
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