Rough Idle and White Smoke (Page 1/1)
BruhMans06 MAR 14, 03:52 PM
So I finally got my fiero to run, and it seemed lkike it was running super well, but it sounds a bit off. First, the idle is pretty chooppy below 1k rpm, and it sounds like a slight misfire, its sounds weird but not obvious, unless thats just what the stock 4 banger sounds like. Tactor like, and rough.

My 3rd issue is im getting white smoke out of the exhaust AGAIN. I just replaced the head gasket because it was smoking before, and I endeed up placing the headgasket in wrong, but this time I followed the manuel to a T and I beleive I torqued everything properly this time. Im cunfuzed and bamboozled at the moment. I doubt the rough idle and coolant burning are unrelated

PLEASE HELP!
thanks much

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James Bird

Certified Idiot

Patrick MAR 14, 04:00 PM

Regarding the white smoke... it billows out of my Formula's exhaust tips every time I do a cold start, and lasts for several minutes. It's normal, unless it continues indefinitely and the coolant level starts to drop.
1985 Fiero GT MAR 14, 05:41 PM
Agreed on the cold start smoke, does the same thing on my Fiero and my dad's, Fieros seem to do that more then regular cars, I don't know whether that is because of the relativity short exhaust system, or because it's stainless steel, maybe moisture condenses on it differently, but the smoke can last for up to 5 minutes, and it can get pretty thick, I'm no expert with the 4 cyl, but you do need to drive above a certain speed for the ECM to "learn" the idle, unless it does that, it can be high, low, choppy, etc. and to expect a "perfect" idle, the engine needs to also be warmed up.