This engine was running flawlessly. On a fairly long highway trip, it started to misfire. By the end of the trip I am pretty sure that there were two or more cylinders misfiring. Please note that I had never experienced *any* misfires before this event. I want to make this clear because I think this diminishes the likelihood that plugs are involved, although the plugs have not been changed in some time. Plugs are very expensive to change in this car and only the dealer will change them. As the car has 150K miles on it and has other non-engine problems, I am trying to avoid spending money needlessly. If possible, I would like to examine all the less expensive possibilities first, ruling out everything but the plugs before I "bite the bullet." (Around $400.) Could someone list all the other possibilities that might be making this engine misfire on multiple cylinders, and that could cause this to occur suddenly? Many thanks for your help! Frank
- posted
17 years ago