Really bad, constant ping.

[KooK]

I'm getting a ping like I have NEVER heard before. Its like one cylinder is running a consistant lean between 2500-3200RPM at maybe 30-80% throttle, but when I go WOT it goes away. When I say consistant, I mean everytime that cylinder is supposed to fire, it pings, EVERYtime. I'm thinking an injector must be faulty but I want other opinions before I do anything.

Thanks.

 

[trollkepr]

You could have a cracked valve. The small piece of valve would be so hot that it would cause detonation. Just one thought

 

[Glacier991]

another thing people miss is a leaky Idle Air Control valve....sometimes you will hear it hunm on acceleration..... it can lean out the mixture.

 

[Timoteo]

Have you replaced your fuel filter lately? Look for any intake leaks. Also check your fuel pressure regulator. If you have a clogged filter or bad FPR you can get low fuel pressure to the injectors and get a lean burn. My 92 used to ping alot. WOT would usually quiet it briefly. I think that a WOT enriches the mixture for acceleration???

 

[94Blue302GT]

I Agree that it's probably a fuel injector. Clean them out every once in awhile to keep them up to par. Check your fuel filter. It's likely that you'll have to buy new injectors.