Misfire problem unknown??

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Mar 8, 2008 | 05:03 PM

T-56SLPSS

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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

Mar 8, 2008 | 05:15 PM

Toes

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From: Colorado

Fuel PSI? Vacuum leak? SLP MAF?

Mar 8, 2008 | 06:53 PM

poolshark021

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From: Royal Oak, MI

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.

Mar 8, 2008 | 08:35 PM

T-56SLPSS

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it sais random mutiple cylinder misfire. unpluging injectors is a pain too

Mar 8, 2008 | 09:54 PM

poolshark021

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From: Royal Oak, MI

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.