CHEVY 5.7LTR MISFIRE 1997 SUBURBON

1997 CHEVROLET SUBURBAN
144,357 MILES • V8 • 2WD • AUTOMATIC
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RASCAL6568
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  • 5 POSTS
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. ?
Jan 6, 2011 at 8:22 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Check and test the crankshaft position sensor
Jan 6, 2011 at 11:20 PM
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RASCAL6568
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  • 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....
Jan 15, 2011 at 8:32 AM
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RASCAL6568
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ALSO DID COMPRESSION TEST ALL WERE 165-170 COMPRESSION WITH CYLENDER 8 THE LOWEST @ 165.
Jan 17, 2011 at 7:21 PM
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