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Old 05-29-2004, 12:55 PM   #1
harvey oh
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Join Date: Aug 2002
Default random misfire code #4/cel 0304

help! both tuners and myself have been wrestling with this recurrent problem. mods are: uppipe, 3" turbo back hiflow cat exhaust system, perrin turbo inlet pipe, ecutek reflash, samco i/c hoses, hks grounding kit, deadbolt monster port & polish on stock turbo.

have replaced egt and maf sensors, reflashed and replaced ecu, 1 step colder plugs (both iridium and copper which both sets looked fine upon inspection), also switched coil packs around but still get solid cel lite #0304(#4 misfire)

sorry for long post but really need help on this one before i change to sti injectors and /or fuel rails.

thanks harvey
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Old 05-29-2004, 02:02 PM   #2
Uncle Scotty
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Do a compression check and see if a new shortblock is needed....

It may very well be that you have a bad #4....
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Old 05-29-2004, 07:44 PM   #3
wix
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Does the check engine light flash when at idle?
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Old 05-29-2004, 08:23 PM   #4
LiquidForce
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If switching the coil packs didn't help than its probably compression related. I would wager that the compression in #4 is between 70-90.


I speak from experience. At first the misfires were random. Than they became continuos ands always on 4
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