Newbie:moneo Only Running On 3

[mickharrison4]

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

[jeebowhite]

Hi Mick,

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

[btmaldon]

Its probably the leads or the plug.

[mick85]

Have u multimeter check resistance of each lead

[mickharrison4]

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

[FOCA]

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?