MY 94 camaro z28 is back firing. Could the ignition coil b makin my car back firing?

 

do you mean miss fire? and where do you hear it up at the engine or at the exhaust?

 

As noted.... clarify. Is it popping in the exhaust? Is it popping back into the intake manifold? Under what conditions does it backfire.... what RPM, what engine load?

Has your engine been modified in any way?

 

My engine is basically stock the popping is comin from tha exhaust. HELP ME

 

If you want HELP you have to provide the requested info. Let's try this again:

Under what conditions does it backfire.... what RPM, what engine load?

Are you running a cat? Has the exhaust been modified in any way?

Misfires in the engine can cause fuel and air to accumulate in the exhaust and ignite ("pop"). This can be even worse if you have cross-firing between the wires. If that's the case, you need to find out why its misfiring. Could be plugs, wires, IC Module, coil, Opti, injectors, sticking valves, etc.

Knowing WHEN it pops may help us figure out what is causing it. Youo can't just jump to the conclusion that its the coil.

Have you scanned it for codes?

 

I removed my cat.. now when engine winds down I get popping. I am going to have a tune done on my pcm and hope that resolves the issue... if not, I'll put the cat back on.

 

Popping in the exhaust on decel is fairly common and doesn't necessarily indicate a problem. How long has it done it? Ever since you removed the cat? How long ago did you remove the cat?

 

yep, it pops on the way down after revving. it's because i removed the cat or at least added to the underlying issue of the car running very rich.

that's why I'm hoping the madz28 tune will lean it out a bit.. i heard that these cars respond very well to a leaner mix.

 

the only time mine ever popped on decel was when i had a hose leak and coolant was dripping on the opti

 

i have stock manifolds and no cat, and a cutout! and everytime i decel my car backfires.... but thats normal to me i dont see a problem