BAUGHT INJECTORS AT JUNK YARD STILL BLOWING ...

2000 Chevrolet Cavalier

Tiny

mikecon24

January, 14, 2013 AT 5:03 AM

Baught injectors at junk yard still blowing black smoke and runs rough idleing

FOUND 740 RELATED QUESTIONS

Black Smoke Coming From Exhaust

65 ANSWERS
100 IMAGES

Smoking

32 ANSWERS
48 IMAGES

4 Answers

Tiny

caradiodoc

January, 14, 2013 AT 6:03 AM

What led you to the injectors? You know they didn't all fail at once. GM has a lot of injector problems but they almost always flow too little fuel. Black smoke is a sign of burning too much fuel. Usually that is because the Engine Computer is commanding too much fuel based on incorrect sensor readings. A sensor can partially fail and not set a diagnostic fault code, but most of the time a code will be set and the Check Engine light will turn on. Did you check for fault codes? If you did, what were they?

Tiny

mikecon24

January, 15, 2013 AT 1:14 AM

Its reading code po191 I changed upper oxy sensor then did the injectors because it did not work

Tiny

caradiodoc

January, 15, 2013 AT 3:23 AM

P0191 Fuel Rail Pressure Sensor Circuit Range/Performance

Is this the description you came up with? I've never run into this code before.

Tiny

mikecon24

January, 15, 2013 AT 9:56 PM

Maybe it was po171 I have to check again to make sure.

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