- Joined
- February 18, 2009
- Messages
- 5,331
- Reaction score
- 614
- City, State
- Winnipeg, Manitoba
- Year, Model & Trim Level
- 00 Limited V8
Im looking for help here as all threeads pertaining to this kind of trail off without any real answers.
I was sitting at a stop light, and my motor started shaking. Higher rpm's seem to be fine. Check ingine pops up. My reader gave me P0303, Cyl 3 misfire. Ok, thats the cylinder on the passenger side closest to the fire wall.
I popped the plug, and it looked fine. So, I replaced the plug anyway, and swapped plug wires with the cylinder next to #3.
Next day, same issue. #3 cylinder. I blocked the tires, pushed parking brake, and unplugged one spark plug wire at a time. I'd plug the one I unplugged back in after confirming how badly the motor would shake. No question, #3 is not firing very well.
There was lots of arcing when unpluggung each plug wire, including #3. That rules out the coil pack. Not the plug wires, as I swapped it out. Not the plug, I installed a new one.
So what next? Valves opening and closing (Compression test) or Fuel injector?
Ideas? Heads are new this summer. Heads, rockers, etc. are new this summer. Shoot me now.
I was sitting at a stop light, and my motor started shaking. Higher rpm's seem to be fine. Check ingine pops up. My reader gave me P0303, Cyl 3 misfire. Ok, thats the cylinder on the passenger side closest to the fire wall.
I popped the plug, and it looked fine. So, I replaced the plug anyway, and swapped plug wires with the cylinder next to #3.
Next day, same issue. #3 cylinder. I blocked the tires, pushed parking brake, and unplugged one spark plug wire at a time. I'd plug the one I unplugged back in after confirming how badly the motor would shake. No question, #3 is not firing very well.
There was lots of arcing when unpluggung each plug wire, including #3. That rules out the coil pack. Not the plug wires, as I swapped it out. Not the plug, I installed a new one.
So what next? Valves opening and closing (Compression test) or Fuel injector?
Ideas? Heads are new this summer. Heads, rockers, etc. are new this summer. Shoot me now.