millsydt Posted March 31, 2009 Share Posted March 31, 2009 i got a fiesta 1.25 mk4 and it misfires a bit at high revs but this gets worse when running low on fuel have anyone else experienced this?? Quote Link to comment Share on other sites More sharing options...
SierraYankee99 Posted March 31, 2009 Share Posted March 31, 2009 Possibly coilpack issues Quote Link to comment Share on other sites More sharing options...
millsydt Posted March 31, 2009 Author Share Posted March 31, 2009 its weird because its fine driving normally it only gets it high revs say if u go down a gear cleaned the inlet yesterday and hasnt helped really thought it be a bit of carbon in the intake :( Possibly coilpack issues Quote Link to comment Share on other sites More sharing options...
SierraYankee99 Posted March 31, 2009 Share Posted March 31, 2009 When was it last serviced? Could be plugs leads coilpack, injectors, fuel pump Quote Link to comment Share on other sites More sharing options...
Grrr Posted March 31, 2009 Share Posted March 31, 2009 On mine it was the coil pack. I changed the plugs and HT leads first, which improved things a little, and then once I did the coil pack it ran sweetly again. Seems to be very common with Zetec engines of a certain age, from what I read on the internet. Quote Link to comment Share on other sites More sharing options...
millsydt Posted April 3, 2009 Author Share Posted April 3, 2009 ahh cheers man its ok when driving normally but at higher revs it struggles its done 76000 mile been looked after though think it needs a cambelt change soon though il have a look at it this weekend shame really because after 4000 rpm the zetec comes alive and thats when sometimes it hestitates On mine it was the coil pack. I changed the plugs and HT leads first, which improved things a little, and then once I did the coil pack it ran sweetly again. Seems to be very common with Zetec engines of a certain age, from what I read on the internet. Quote Link to comment Share on other sites More sharing options...
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