fixed original problem from previous question now something diffrent

1998 CHEVROLET ASTRO
200,000 MILES • 4.3L • 6 CYL • 2WD • AUTOMATIC
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STREDNEK
  • MEMBER
  • 5 POSTS
van now starts and runs but has a miss.It runs really rough and when you throttle up it boggs really bad.i changed the spark plugs and set gap to 0.60 thousands wires are good and its in time near as i can tell TDC and checked distributer position.could it be my ignition or fuel filter or something.thank you for your help.
Nov 23, 2014 at 12:33 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
scan for codes and check fuel pressure with a gauge first auto parts rent them should be 60-66 psi key on engine off. then check for a vacuum leakif scanning shows a misfire code p0300-306 have a pro diagnose it because it can be any sensor in engine causing it.
Nov 23, 2014 at 1:07 AM
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