Mechanics

05 5.3L, P0301 CODE #1 CYL MISFIRING, 102,000 MILES PLUGS REPLACED AT 80,000MILES, I HAVE REPLACED COIL AND WIRES, STILL RUNNING ROUGH AT LOW RPMS, ANY IDEAS?

2005 GMC Envoy • 102,000 miles

#1 cylinder mis firing
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Ernie113
November 12, 2011.



Check the sparkplug, compression and injector for no.1 cylinder-start here

Rasmataz
Nov 12, 2011.