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Does octane have any bearing on misfires? My car is supposed to run on 87 (it's the V6) and I put fuel injector cleaner in a while ago. Car ran like crap (and was using 87). After a tank I put 93 in and I did it for the last few fill-ups and it ran good. Now I put 89 in (I wanted to slowly bring it back down to 87) and now the car is misfiring like a mofo. Plugs/wires/coil packs changed about 10K miles ago so they should be good. WTF? HELP!
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I would still check the plugs/wires/coil packsordlord11<br />2000 firebird<br />Borla CatBack,Whisperlid,K&N Filter,Rims/Tires,160 degree powerstat, hypertech programmer,Ram Air Hood W/airbox -
Had a misfire problem a couple of months back. Damn plug wire kept falling off. Like 3 times! And I think the dealer ripped me on that one. :mad: But we won't get into that! [img]smile.gif[/img]Comment
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