MK5 Golf GTI
All Things Mk5 => How to Guides / Troubleshooting => Topic started by: mk4gti-t on August 20, 2014, 06:31:49 pm
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Earlier today i suffered what i thaught was a misfire. It only happens on WOT and under load. Scanned for faults and the only ones that came up were to do with the flapper motor issue that i already know about. Ran some logs and found cylinder 1 misfires. Possible causes? I'm thinking plug and/or coil pack. Anything else i should be looking for? Also this might sound like a stupid question but which is cylinder 1? I'm assuming it's the far left cylinder. Cheers.
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Injector is another high possibility as these cars seem to be suffering with injector missfire and un-smooth idling issues , anything over 60k miles , then add that to your list of possibles.
Number 1 will be nearest the cambelt.
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Cylinders 3&4 are most common for misfires as they are closers to the PCV so get the most gunk coming in.
Try spark plugs first as they are a cheap fix, maybe swap coil packs around to see if the fault moves with the coil.
Worst case as Steve said is an injector :sad1:
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Cheers for the advice. Ive ordered a set of NGK BKR7EIX so hopefully that will sort it out. By the way i'm currently running some nology plugs that i brought off a member on here. Only read bad things about them since i fitted them :scared:
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It's recently come about that nologys are no longer recommended for our cars :scared:
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Plugs cleaned and gapped as it looked massive and running better than ever now. I've ordered some new ngk iridiums though as these nology's are a bit suspect now. Cheers :happy2:
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:sick: just reminded me that backshaft motorsport charged me £65 for gapping my spark plugs :fighting:
Found my feeler gauge since
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:sick: just reminded me that backshaft motorsport charged me £65 for gapping my spark plugs :fighting:
Found my feeler gauge since
Jokers.
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:sick: just reminded me that backshaft motorsport charged me £65 for gapping my spark plugs :fighting:
Found my feeler gauge since
Wtf!
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Arseholes :fighting: