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1999 Chevy Malibu fuel regulator

Tiny
RICKTIPTON
  • MEMBER
  • 1999 CHEVROLET MALIBU
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 18,400 MILES
I HAVE CHANGED PLUGS AND WIRES, COILS AND COIL PAC, FUEL FILTER. THE CAR IS STILL SLUGISH AND WILL GO DEAD WHEN I LET OFF THE GAS. RUNS GREAT AS LONG AS I PUSH THE GAS. WHAT SHOULD BE MY NEXT STEP? CODE AT AUTO PARTS STORE IS MULTI PORT MISFIRE.
Friday, January 1st, 2010 AT 6:32 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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
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Friday, January 1st, 2010 AT 6:52 PM

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