I have one cylinder that I replaced the plug 3 times. The plugs last a short time than stop firing. Any ideas.

There is a problem with that cylinder in particular. What does the plug look like when it comes out? Black would mean an oil leak, white would mean coolant (ie head gasket). Depends on that.

Nadeem

Plugs are white. I have compression 120. Any way to verify head gasket leak with out removing.

Thanks alot for sharing these information..I am very sure these informations are worth for the one who wants to know about it..and it will help to solve the problem...it becomes very easy now...