Yes, in 1988 they still had a distributor cap, rotor. Ahh the good old days. If you haven't tuned it up in a long time, that may not be a bad idea to check. Also, based on the miles, you may want to check the engine compression. There could be a valve that is allowing pressure to by pass and create a backfire.
I will add that often times, a back fire is created by a vacuum leak. I say that because I want you to keep it in the back of your mind so you are checking while working on other things. One last thing, when it backfires, is it through the intake or exhaust?
Wednesday, September 22nd, 2010 AT 1:30 PM