I have a 1987 Toyota tercel with 156,000 miles on it. It runs great, but a couple of times lately it has kept running " roughly" a few seconds after shutting the car off. Then its hard to start up right away, but starts up fine later on. Whats wrong?
Timming could be advanced a bit too far, check with a timing light, also get a can of seafoam and follw the directions for it's use, this will clean the combustion chambers, you may have a carbon build up problem.