use ngk plugs. you may have a fowled injector, leaning out that cylinder but it is probably the plug just being a pos. use ngk plugs. you need a real boost gauge.
> A while back I noticed my car was 'missing' so I pulled the spark plugs
> and found that 1 of them had an outer electrode that was 'broken off'
> about 1/2 way across the part that is horizontal (ac delco rapid fires
> w/ 10,000 mi). From the looks of that one and the remaining plugs it
> appeared that the car was running neither rich or lean but with a piece
> of the electrode missing I can't help thinking that maybe the car was
> running too lean and still is. What are the obvious signs of a plug
> -- or anything else for that matter -- when the engine is running too > lean?
>
>
formatting link
my exhaust
> manifold was cracked and leaking a bit which, btw, is a mitsubishi > factory mod.
>
> Thanks again, Greg
>