mk1 frs missfire

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06-06-2013, 07:15 PM

andyb30

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mk1 frs missfire

hi guys my focus has started to missfire on full boost at about 4000 rpm anyone got any ideas of what it mite be or what bits to check/replace to cure it

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06-06-2013, 07:30 PM

stevos

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I would start with coil pack, then plugs then ht leads mate.
If you google it its a common problem.
I got problem with mine too.its boost cutting above 5 k

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06-06-2013, 07:37 PM

andyb30

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ok cheers mate will give that a go

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06-06-2013, 07:48 PM

stevos

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No probs mate you should join rsoc too
There are a lot of people on there that know these cars inside out.
Some good guys on here too.

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07-06-2013, 03:05 AM

IanC

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Plug gaps mate if your on standard ford plugs gap them to a tight 1.0 also do you have a metal plug lead cover? They cause misses too if there not insulated on the backside