This should be easy, exhaust is not sealed properly against the motor causing it to backfire when backing off, is there some compound or different gasket I can put there to seal it off.?
Thanks
Don

just get a new gasket, shouldn't be a need for sealant

You may find the flange is not true to the head also?

Mat you have got it spot on but whats the best or easyest way to overcome the problem?

easy to fix...

Use black RTV silicon [Dow Corning} 732
coat both sides of the gasket with it
let it harden slightly, then bolt it on
Gauanteed no leaks....

Lee

cool, knew there would be an easy fix and knew this was the place to find out, just thought it would be a more hi tech sealant. thanks