When looking at the engine,the leads go to the middle of the top of the engine,and not to the side of the engine,plus the engine side of the leads are flat and don't seem to 'pull off ' like ordinary ones do.( i didn't like to pull too hard in case I damaged something).
If not the plugs,what else might cause an occasional 'miss' in the engine?
If not the plugs,what else might cause an occasional 'miss' in the engine?