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Misfire problem unknown??

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Old 03-08-2008, 05:03 PM
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Default Misfire problem unknown??

runs code P0300, multiple cylinder misfire detected. where should i look for my problem, no egr, new plugs and wires, not water in the gas. i dont know where else to look. any help will be nice. if you have any ideas post up. help me out thanks
Old 03-08-2008, 05:15 PM
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Fuel PSI? Vacuum leak? SLP MAF?
Old 03-08-2008, 06:53 PM
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Could be a coil or injector as well. Is it a dead miss or just random? Do you have access to a scanner to see what cylinder # it is on? If not you can unplug injectors one-by-one to see which one it is.
Old 03-08-2008, 08:35 PM
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it sais random mutiple cylinder misfire. unpluging injectors is a pain too
Old 03-08-2008, 09:54 PM
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You can set a random misfire code when 1 cylinder is a dead miss. That p0300 code doesn't mean it is really just random. It will make a big difference diagnosing your problem if you can figure out if it is 1 cylinder missing or all of them across the board.
Old 03-08-2008, 10:01 PM
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i had a ramdon misfire problem way back...turned out to be a dinged/bent crank underdirve pulley setting it off....
Old 03-08-2008, 10:02 PM
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Can a aluminum flywheel set it off???




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