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1.25 mk4 issues


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#1 millsydt

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Posted 31 March 2009 - 10:13 AM

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??

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#2 SierraYankee99

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Posted 31 March 2009 - 10:15 AM

Possibly coilpack issues

#3 millsydt

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Posted 31 March 2009 - 10:17 AM

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



#4 SierraYankee99

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Posted 31 March 2009 - 10:21 AM

When was it last serviced? Could be plugs leads coilpack, injectors, fuel pump

#5 Grrr

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Posted 31 March 2009 - 11:31 PM

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.

#6 millsydt

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Posted 03 April 2009 - 12:21 AM

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.



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