Naio wrote:
Followup question:
There was another Ford van I looked at with a misfire. I took it to a mechanic to check it out, and he said rain water got in there. (I checked the Ford forum and saw this is a common problem with these vans, a design flaw, there are some fixes.)
Windshield water can drain onto one of the coils if you are parked downhill. Not a problem if the boots are in good condition, however some folks re-use them when they change the plugs, and that lets the water pool and short out the coil. But old cols can simply age out too. They seem to start going after 12-15 years regardless of mileage. I changed all mine preventively around 360,000 miles after I had two go out in a year.
