4.3 vortec

Tiny
CHRISTESTER
  • MEMBER
  • 1997 GMC SONOMA
  • 6 CYL
  • 2WD
  • MANUAL
  • 180,000 MILES
THE TRUCK RUNS BUT HAS NO ACCELERATION I HAVE REPLACED THE MAP SENSOR AN THE CAMSHAFT POSITION SENSOR AN ALL THE INTAKE MANIFOLD GASKETS PULLED THE FRONT TIMING COVER OFF AN CHECKED THE TIMING CHAIN AN GEARS THERE ALL GOOD NEW SPARK PLUGS AN WIRES AN CAP AN BUTTON WHEN U ACCELERATE IT GOES WOOM AN BOGGS DOWN THEN SLOWLY ACCELERATES?
Monday, August 1st, 2011 AT 3:54 PM

2 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Use a gage and check fuel pressure.
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Monday, August 1st, 2011 AT 4:04 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Just to add, with the spider fuel system, 60--66psi key on engine off. Also, take a look at the throttle position sensor.
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Monday, August 1st, 2011 AT 4:11 PM

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