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Number two cylinder misfiring

Tiny
CHRISTOPHER MCDOWELL
  • MEMBER
  • 1991 NISSAN SKYLINE
  • 2.6L
  • 6 CYL
  • TURBO
  • 4WD
  • MANUAL
  • 90,000 MILES
My number two cylinder is not firing. I have checked the wiring and coil pack with an ohm meter. All is good. I replaced the coil pack wiring harness, new plugs, new injectors as well. I pulled the plug and it gets spark. Also, it was wet.
Things I have done;
swapped coil packs, swapped plugs, replaced wire harness, ohm check all coil packs and wire harness and ignitor pack.
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Thursday, December 15th, 2016 AT 8:07 PM

3 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,465 POSTS
What was the plug wet with? Gas or coolant? Run a compression test and see what you have in all four. If they look good pull the valve cover and make sure they are okay, could be a flat lobe causing an issue.

Oh and thanks for your service.
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Thursday, December 15th, 2016 AT 8:50 PM
Tiny
CHRISTOPHER MCDOWELL
  • MEMBER
  • 2 POSTS
Gas, I also have a new metal 1.2 mm gasket installed. There is no water in the oil, already checked that first.
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Thursday, December 15th, 2016 AT 9:03 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,465 POSTS
One item that might be worth checking. You said new injectors. If you have access to an O-scope you could look at the waveform of another on vehicle injector and compare it to the one on number two. I am wondering if maybe the injector driver has a problem and is dumping extra fuel.
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Thursday, December 15th, 2016 AT 9:42 PM

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