hi,

Nick here with the '79 Volvo 244 with running problem.

My newest, most bizarre and possibly most damaging problem this car has is something is hitting the spark plug electrode. I put in new spark plugs. I put in an accepted brand. Autolite 64 coppers (I'd like to get NGK, but how do I know this wont happen to new NGK's?), and I gap them at the correct gap, and I go to take them out about a week later, the electrodes on all 4 spark plugs are pushed to where there is less than 7 thousanths of an inch gap.There is hardly enough space between the inner electrode and the outer that that may be why it's misfiring. The engine is not giving itself a chance to run correctly, because something is smacking the electrode back so far. What could it be, and what are some things I can do to fix this problem?

from Nick