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too rich-not me
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Posted by t [Email] (more from t) on Wed, 17 Sep 2008 17:11:21 Share Post by Email
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1986S- performance starting falling off a couple days ago. thought it was spark-changed cap/rotor/plugs=ngk plugs-bp6es. went for a 180 mile jaunt yesterday and barley limped back. car started stalling at stops, and now stalls when the clutch is depressed even at cruising speed. pulled the plugs and they are all black soot-too much fuel. now when car is cold it starts right up, but after 10 seconds starts to really miss like it is only hitting on two cylinders, and the unburned fuel is coming out the tailpipe as blue smoke. i believe that the 02 sensor is bad, as i get no reading at all on meter. but, i thought this only comes into play w/warm engine. cleaned the AIC-no change. unplugged the cold start injecteor, and the car runs better but still quite rough/rich. cannot find any obvious vacumn leaks-it would have to be a bad one to make car run this bad. i did change the knock sensor a while back with one from my '89, but the car seemed to run fine w/ that. checked the timing-close enough. the last three digits on the AMM that is on the car are 005. have one off a junk car that the digits end w/ 013 and tried that, but the car wont even run with that one.

so, i am thinking bad:AMM or ECU, or 02 sensor. any other ideas??
thanks


posted by 75.221.4...

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