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1998 Chevy Truck Cylinder misfire

Tiny
VORTEC98
  • MEMBER
  • 1998 CHEVROLET TRUCK
  • V8
  • 2WD
  • AUTOMATIC
  • 157,000 MILES
My truck runs bad it shakes and I changed wire cables and spark plugs and it still shakes. Especially when in drive on nuetral it stable I noticed that my gas needle moves fast so fast that It looks blurry. My friend installed his computer and it read cylinder misfire
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Wednesday, October 7th, 2009 AT 4:11 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, to include bad fuel.
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Wednesday, October 7th, 2009 AT 4:16 PM

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