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Chevy 5.7LTR MISFIRE 1997 SUBURBON

Tiny
RASCAL6568
  • MEMBER
  • 1997 CHEVROLET SUBURBAN
  • V8
  • 2WD
  • AUTOMATIC
  • 144,357 MILES
IAM WORKING ON A 1997 CHEVY SUBURBAN 5.7LTR AND HAVE MULTIPLE MISFIRES ON CYLENDARS 2;4;6;8 RIGHT BANK I HAVE REPLACED CAP, ROTOR, CAM SENSOR, DISTRIBUTOR, RE-TIMED TO RETARD 0 AND CHECKED COMPRESSION, WIRES, AND PLUG GAP. STILL MISFIRES UNDER LOAD AT IDLE SELDOM MISFIRED BUT AT ACCELERATION ALL RIGHT BANK CYLENDERS MISFIRE. I NEED HELP! LOOKING AT FUEL INJECTORS NEXT BUT CONFUSED ON WHY ONLY ON CYLENDERS 2, 4, 6, 8. O2 SENSORS SEEM GOOD AND ONLY CODE IS P0300.?
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Friday, January 7th, 2011 AT 4:22 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check and test the crankshaft position sensor
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Friday, January 7th, 2011 AT 7:20 AM
Tiny
RASCAL6568
  • MEMBER
  • 5 POSTS
I HAVE REPLACED THE FUEL INJECTORS AND CRANKSHAFT POSITION SENSOR AND STILL HAVE SAME CODES. MISFIRE ON CYLENDERS 2, 4, 6, 8. COMPUTER REPLACEMENT IS NEXT? ANY HELP WOULD BE APPRECIATED.
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Saturday, January 15th, 2011 AT 4:32 PM
Tiny
RASCAL6568
  • MEMBER
  • 5 POSTS
ALSO DID COMPRESSION TEST ALL WERE 165-170 COMPRESSION WITH CYLENDER 8 THE LOWEST @ 165.
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Tuesday, January 18th, 2011 AT 3:21 AM

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