Everyone, I am trying to diagnose an idling issue on a camaro with a 350 has a slightly hotter cam that I don't the specs of but we are having issues with it being very rich. We can tell because it smells like fuel pretty bad and when you step on it you can see black smoke. I attached a log file if you guys could give a look at it. Fuel pressure looks good for the most part.

Drew

 

There is an O2 sensor rich code set (45). It looks like the BLM is at 118, which is pulling a lot of fuel. A lot of the log file is difficult to understand.

None of the log is at idle.

Tap on the MAF sensor and see if that makes the engine stumble. Other possibilities are leaky injectors or the base timing is not set properly.

RBob.

 

but unless you're having a high idle, i wouldn't think it was a vacuum leak. What does your car idle at? It sounds more like fueling to me.

 

i have a 87 iroc z Camaro 350 it keeps telling me that mass air flow sensor is bad .replaced maf sensor, an relay and still tells me I have a 36 code

 

Does you maf have a burn off wire ?