OK, i have one cylinder that isn't firing right, number six. It's causing a rough idle and chugging when it shifts into forth gear at low speeds. I have replaced the plug and plug wire, so i believe it is getting spark. When i pull the plug it is black like it's running rich or not getting spark. I can pull the plug wire off the cap with the motor running and there is no noticeable difference in idle quality. The same happens when i pull off the injector wire for the number six cylinder. Its got a new cap and rotor, new plug wires, not so old plugs, and a previously replaced ignition module. I'm thinking a bad injector? It'd have to be squirting to much fuel though, is that possible? Any help is greatly appreciated.

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1989 Iroc-Z TPI 350 auto 4-spd Removed MAF screens K & N filters, Hedman smog shorties, accel 8mm wires, made for you wire looms, cat back, gutted cat.

[This message has been edited by BP89IROC (edited April 11, 2001).]

 

Usually you can hear the injectors ticking If there working.

 

I can hold a long screw driver to the injectors and they all sound the same.