What can cause a rich condition? Also smoke on startup...
Tech / General EngineWhy is my car making that sound? My car won't start! Combination questions? Don't see a board for your problem or have other technical or engine specific questions? Post them here!
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What can cause a rich condition? Also smoke on startup...
My car is an 89 LB9. I get black soot on my bumper above the tailpipe a day or two after I wash the bumper. The car is goes into the proper mode after it warms up. I run a stock 195 thermostat with the stock prom as well.
I also dont know if this is related, but sometimes my car smokes wildly at startup, and sometimes not at all. For example: Today after sitting for only 2 hours, the car smoked quite a bit. However, later today it did not smoke after sitting longer.
Could I have a leaky injector, that leaks fuel onto the top of a piston when the engine is not running, and dumps too much into the cylinder while the engine is runnning?
Help me out here. I have access to Diacom software, what should I look for? What will indicate a rich condition?
Thank you
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