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Newbie:moneo Only Running On 3


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#1 mickharrison4

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Posted 17 November 2013 - 08:03 AM

hi guys im new to this but im in need of help with my 2004 moneo 1800 petrol.

 

last week i was going to work and it all seemed fine untill i got theit and when iling it felt like it was missing when on low revs.i change coil pack an it was the same i then change the plugs an it was great. but 3 days later it started missing again.when i take the ht lead of number 4 when car is running  it does nothing but the other 3 leads make the revs drop.i took the new plug out number 4 and it was slightly black and wet.

 

what could this be any help would be great  thanks mick



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#2 jeebowhite

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Posted 17 November 2013 - 03:08 PM

Hi Mick,

 

Did you change the HT leads at the same time as the coil pack?



#3 btmaldon

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Posted 17 November 2013 - 03:57 PM

Its probably the leads or the plug.



#4 mick85

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Posted 17 November 2013 - 05:41 PM

Have u multimeter check resistance of each lead

#5 mickharrison4

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Posted 19 November 2013 - 12:14 AM

hi guys i havnt changed the leads as it ran great for 3 days and thort they were fine.also when i rive it at high revs.i.e above 2500 rpm it runs fine

 

any ideas as to what ii should do next                                                                                                                                                                



#6 FOCA

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Posted 01 December 2013 - 02:19 AM

if your plugs or leads are faulty it can damage the new coil packs - best to change the plugs 1st, then the leads, then the coil packs

 

Try gapping the plugs down

 

PS - whats a moneo? :lol:



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