1993 GMC Sonoma it is missing

1993 GMC SONOMA
160,000 MILES • 6 CYL • 4WD • AUTOMATIC
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LITTLE WHILE
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  • 2 POSTS
i have checked pluges and replaced also distributor and roter button but once it warms up going down the road it starts to cut out 15 to 20 miles
Mar 6, 2009 at 10:26 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Engine 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, or even bad fuel.
Mar 6, 2009 at 10:28 PM
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LITTLE WHILE
  • MEMBER
  • 2 POSTS
where is it at on the motor
Mar 6, 2009 at 11:10 PM
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