tankmurdoch Posted September 8, 2011 Share Posted September 8, 2011 Hi, just recently my mondeo has started mis-firing. At around 1500 revs in pretty much any gear, especially the low gears. I've had the spark plugs replaced but hasn't made any difference. What could be causing it? What should I be asking a garage too, so I don't get ripped off? Is it worth trying injector cleaning fluid? Any help much appreciated. Quote Link to comment Share on other sites More sharing options...
mintalkin Posted September 8, 2011 Share Posted September 8, 2011 one of the common cause of a miss-fire is a faulty coil pack, see if your local garage has got testing tools to check the packs out. Quote Link to comment Share on other sites More sharing options...
fishpond 47 Posted September 9, 2011 Share Posted September 9, 2011 I'd try a new set of plug leads before looking at the coil pack (cheapest option first) Quote Link to comment Share on other sites More sharing options...
tankmurdoch Posted September 9, 2011 Author Share Posted September 9, 2011 Thanks guys, think i'll try the leads then the coil pack. Is injector cleaning fluid worth it? Quote Link to comment Share on other sites More sharing options...
fishpond 47 Posted September 9, 2011 Share Posted September 9, 2011 on an 07 reg car then I dont think it would be the injectors, feel free to add some to your fuel by all means it can only be good for the fuel system anyway, but as said I'd go down the ht lead route (a mis-fire is most commonly electrical Quote Link to comment Share on other sites More sharing options...
tankmurdoch Posted September 15, 2011 Author Share Posted September 15, 2011 HT leads changed, no difference. Its in the garage now getting the coil pack changed, fingers crossed... Quote Link to comment Share on other sites More sharing options...
tankmurdoch Posted September 16, 2011 Author Share Posted September 16, 2011 Coil pack fixed the problem, its like having a new car. Going to fill up and use some fuel injector cleaner. Thanks for your input guys. Quote Link to comment Share on other sites More sharing options...
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