HELP 02 maxima running rich backfiring P0300
10-01-2019, 04:46 PM
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Location: Massachusetts
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HELP 02 maxima running rich backfiring P0300
I did headers back no secondary cat test pipe have all 4 02 sensor in. Has intake ecu reflash by nisformance
running rich backfires thru exhaust a bit even at idle no 02 sim or spacer has code p0300 130k on engine plugs are black with Grey tip. If I unplug the secondary 02’s it idles a lot better put backfires a lot more
running rich backfires thru exhaust a bit even at idle no 02 sim or spacer has code p0300 130k on engine plugs are black with Grey tip. If I unplug the secondary 02’s it idles a lot better put backfires a lot more
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hawaiiankine
5th Generation Maxima (2000-2003)
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11-23-2004 11:04 PM