Guest lee_donnan Posted April 5, 2012 Share Posted April 5, 2012 Hi, I have put a fiesta rst lump into my cabby, changed plugs,leads etc but car is miss firing at idle. It clears when driving and when revved. Any ideas?? Cheers Quote Link to comment Share on other sites More sharing options...
Guest Lee81 Posted April 5, 2012 Share Posted April 5, 2012 Sounds like under/over fueling issue. Not as knowledgable on efi rst systems but would assume there is a co adjuster that needs setting Quote Link to comment Share on other sites More sharing options...
Guest lee_donnan Posted April 5, 2012 Share Posted April 5, 2012 Cheers for that I will book it in somewhere to get it set up properly. Quote Link to comment Share on other sites More sharing options...
Guest corrie Posted May 28, 2012 Share Posted May 28, 2012 have you retaught the ecu after installing the engine? Quote Link to comment Share on other sites More sharing options...
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