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misfire

  1. Ford E-Series Vans
    Not long ago I finally got around the changing my cylinder 5 spark plug and coil because I had a terrible misfire. The problem seemed to go away but it seems to be creeping its way back as I drive more. I have had a bank 1 and 2 lean code as well since the misfire started that I was hoping would...
  2. Ford Focus Forum
    About a year ago my 08 focus started misfiring. I took the spark plugs out and there was oil in the wells, so I replaced the gaskets around it as well as the spark plugs. When I took the valve cover off I cracked it (missed a bolt and tried to pry like a damn fool) and I’ve seen oil building up...
  3. Ford Explorer, Mercury Mountaineer,Lincoln Aviator
    Hello, like the title states I have an 06 mountaineer with the 4.0 v6 195k miles that I just bought and its throwing codes for 300,302 and 420 I know they’re random misfire, cylinder 2 misfire and cat below threshold but my question is, are there any common parts that would be responsible for...
  4. Ford F-Series, Ford Super Duty, Ford Diesel
    Hey all, so I have an 04 F150 with the 5.4L V8. I recently changed my spark plugs and coil packs, but now I'm getting a CEL indicating a misfire on Cylinder 3. I've also changed out the Bank 1 Camshaft Position Sensor but with no luck. I happen to have a Bluetooth dongle attached to the OBD2...
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