1987 Chevy Truck sputtering

1987 CHEVROLET TRUCK
Avatar
TOM MARSHALL
  • MEMBER
  • 1 POST
Engine problem
1987 Chevy Truck V6 Two Wheel Drive Automatic 143000 miles
----------------------------------------------------------------
my chevy pickup wiyh a 4.3l astro engine sputters very bad when driving. the plugs, wires, dist cap and rotor are all new. what could be the problem?
Dec 3, 2007 at 11:00 AM
Advertisement
Avatar
BLACKOP555
  • CAR REPAIR CONTRIBUTOR
  • 10,386 POSTS
check the fuel pressure with the truck running, also check the ignition timing.

the EGR may be pluged opern with carbon causing rough running also. A bad PCV valve, could also cause rough running, take it out and shake it, if it rattles it is good, if not replace it. also check the rubber elbo's and the plastic hose that goes from the PCV valve to the air intake hoses.
Dec 3, 2007 at 12:23 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.