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1998 GMC Jimmy miss

Tiny
GRAHAM1
  • MEMBER
  • 1998 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 135,000 MILES
I have changed plugs and wires distributor cap and button, checked compression on number 1 it is 115lbs, but I still have a miss on number 1 cylinder what should I do next, all other cylinders do not show a miss on snap-on computer. Just number 1 cylinder. Have checked wires by moving them around to differ position still on number one
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Tuesday, August 31st, 2010 AT 10:08 PM

1 Reply

Tiny
MADMIKE1735
  • MECHANIC
  • 951 POSTS
While its running, pull off the wire for cyl 1. If you dont know any difference in engine performance then check that you have contact on that wire. You may need to push some wire into the boot. It may also be a fuel injector.
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Tuesday, August 31st, 2010 AT 10:13 PM

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