GTOsRamairSilverado

OK For the last two months or so my check engine light has been coming on and off. While the light was on i took it to autozone so that they could tell me what the problem was. They hooked up their little computer gagdet and they told me it was a multiple random misfire (P0300), i think that was the code. Any ways, the light will come on about every two or three weeks and stays on for a day or two then it turns off. Ive checked the spark plugs and the wires and they are fine. I checked them with a ohm meter. I have a wheatley tune for 93 octane, catless, and a bullet muffler, rebuilt tranny with a vig 3200. what could be my problem ??????
BTW i posted in this somewhere else but got no responses !

PappyDan

iTrader: (4)

did you get some bad gas?

GTOsRamairSilverado

i doubt its the gas because ive filled it up about 8 time since the light started to come on and off

Grumpy5.3

iTrader: (14)

did you have any lean codes to go with the 300???

GTOsRamairSilverado

lean codes??? the guy at autozone just told me that it was a multiple random misfire and that was the only code showing.

litreddevil

iTrader: (4)

do a compression test

v8

iTrader: (10)

your misfire codes need to be set higher or your injectors need to be cleaned.

GTOsRamairSilverado

why do you say my codes need to be set higher? and how would i go about doing that ?

v8

iTrader: (10)

your miss fire settings may need to be set higher.

litreddevil

iTrader: (4)

the only thing is if he has no cam that should not have to been done that is what causes miss fires

do you feel it miss fire