Re: backfire - HELP!
One simple and quick thing you can do to check for an intake manifold leak is to spray starting fluid all around the intake manifold where it mates up to the engine. If the engine changes speed while doing so you will need to pull the manifold off and at a minimum replace the gasket and possibly have it surfaced.
A leak here can and will often cause back fire.
__________________
Dave / Lincoln Nebraska
|