Every time i start my 85 chevy caprice alot of smoke comes out my tail pipe?????

Question

Its a v8 305 and almost every time i start it up black smoke comes out the exhaust! i dont know what the problem is?? i just changed the catalytic converter and the muffler too???

Answer 1

if it's carburated have the choke checked out for being set right, if it doesn't have a carb I'm thinking you have bad valve seals.

Answer 2

Every 305 ive owned did that at high mileage.
I found that my valves were sticking. I took the cheapest option which was a can of Seafoam in the oil every oil change and shell gas. The smoking decreased gradually until it stopped a few months later.

Answer 3

Dodge Man, has the right answer, and it's important that you have it fixed soon. If not, you'll be replacing the catalytic converter again. Black smoke always means you're burning a rich fuel mixture, and white or gray smoke means you're burning oil. I'll give thumbs up to Dodge Man.

Answer 4

Black smoke indicates a fuel RICH condition. Have the carb checked or replaced. It MAY be a choke problem, as stated above.

Answer 5

black smoke is gas smoke so this means its running too rich,it may be time to tune the engine up in it,first off id have it looked at by a good mechanic,it may just need some adjustments made to it,good luck.

Answer 6

if its black smoke then you have a problem with the engine flooding with too much gas. you probably need to get the carb checked out.

Answer 7

Why wouldnt you take the car to a mechanic instead of asking the internet?

Answer 8

valve guides and seals are worn, oil runs down the valve stem after you shut-off the engine,