by Mike
(Pell city, Alabama, USA)
I have a strange problem. First off, I had a problem last year and they replaced the entire (?) fuel injection system and it didn't fix the problem. Them they replaced the wiring harness and it solved the cranking problem. Just mentioning that to say those parts have been replaced. My current problem is at 3500 rpm +/- 500 rpm's after the engine warms up it has an intermittent misfire. It cranks great idles great, below around 2800 rpm's it runs great. Above 4200 rpm's it runs great, but in that 3500 range it has an intermittent misfire. I replaced the spark plugs and it didn't help. I replaced the coil packs and that didn't help. I put it in the shop and they replaced fuel filters and fuel line (which I had just replaced 2 months ago) and said that fixed the problem... BS, it didn't. Has anyone had this problem? I'm desperate
Join in and write your own page! It's easy to do. How? Simply click here to return to Mercury Forum.