miss fire cylinder 3

[3.8lcoty]

okay well i got a miss fire on my camaro at idle,before lucas would make it stop but now it comes and goes as it pleases.i have try'ed changing the plug wire and coil and i think my last thing it could be is injector or intake leak.i did the intake gaskets about a year or two ago but i would like to know what you guys think it might be.

[Hib Halverson]

Re: miss fire cylinder 3

Here are some characteristics which can cause a misfire

Spark plug
fouled or failed injector
intake gasket leak
intake valve leak
burned exhaust valve
broken valve spring
leaking EGR system