1991 GMC C1500 wont start

1991 GMC C1500
180,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
HOTROD104
  • MEMBER
  • 1 POST
my truck wont start i have compression, spark and fuel, im stumped???
Jan 30, 2010 at 5:54 PM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Engine compression is good

If both correct fuel pressure and snapping blue spark is present-check the valve and ignition timing, this will lead you to problems with compression and valves opening and closing at the wrong time/broken or jumped timing belt/chain
Jan 30, 2010 at 6:09 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.