Suff make sure you check everything that steveo suggested. In my opinion, particularly the opti spark and wires. sounds like its missing, though i havent seen the log, i dont have data master. Not to be harsh, but plugs look great is not helpful. quality pictures of the condition of the plugs would be great.
Last edited by zoomo; 10-19-2014 at 04:10 PM.
All Changed water pump 2 no misfires anywhere Im leaning to the 02 1 is switching fine the other is staying below 500mv but if the car is not running properly the 02 won't switch properly. if this was only a 96
plugs have no black or fuel res on them the plugs have less the 500 miles on them along with full tune. MAF I cleaned because car sits a lot only 36k. did ramp and sig test on injectors that was good. fuel pump changed with 320lph because old one took crap. fuel pressure stays constant koeo so no leak and fuel reg good.
Im sure someone will argue this but in my personal experience an 02 sensor can cause an engine to run rich or lean but not to the point that the car really runs very noticeably bad at all. Unless of course it has in turn fouled a plug out or something of that matter. I still lean towards a solid misfire. Just got done with finding a bad new opti spark on my brand new engine. Took me two weeks. Hope you do better. Good luck. Don't get tunnel vision .
only 1 bank lt bank rich right bank perfect no misfire at all i changed cap rotor spent 255 for optispark alone no codes and i pulled 1 inj at time no miss
Bodch 02 sensor is only 60 dollars at local parts store. Put one in it so you can move on with your diagnostics.
Already ordered car dons run bad really just smells like sh#t and from a stop backfires 1 or 2 times under acceleration
ok well a backfire could help you diagnose your problem....backfires either come out the intake or the exhaust. you should be able to tell clearly by the sound of the backfire if it sounds like its under the hood or out the tail pipe. if its under the hood, its coming out of the intake valve and would be caused by the fuel in the cylinder igniting at the wrong time for some reason, whether it be running too hot , lean, timing, bad opti spark, crossed wires, etc. The only way a rich condition will cause a backfire, the only way im aware of. is a buildup of fuel in the exhaust system, which then ignites by heat, and causes the shotgun sound from your tailpipe. so which is it? small pop from under the hood or a shotgun out of the tail pipe?
Last edited by zoomo; 10-19-2014 at 08:54 PM.
check for burned plug wires, then probably blame the opti.Originally Posted by suffolkauto01
ill put the spark tester were I can make my own gap
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