Fiesta missfire ?????????

Question

Just got in and my wife said (as they do) "car's buggered".

Went out to look in the last bit of daylight and found that No's 3 and

4 cylinders are not firing, counting No 1 at the camshaft end.

My assumpsion is that the coil pack has s*it itself, but it seems a bit early as it's only 25000 miles on an O2 reg, in past experience these things dont normally fail untill later in life !

Anybody know if this is a common problem, or if there could be something else causing it??

I would welcome someone elses opinion before I pop into town in the morning and buy a new coil pack.

It's a 1400cc zetec engine.

Thanks for reading, all opinions welcome.

Slim

Tim (remove obvious) · Accepted Answer

Coil pack first if 3&4 are not firing *at all*. Chances of both HT leadsgoing down simoultaneously without warning are extremely unlikely..Dont drive or even run for any length of time with 2 pots worth of fuelgoing into the cat.Tim..

Slim · Answer

Wouldn't drive the thing for any length of time even if it was workingfine.It's a Ford.I did tell her "dont buy a ford" but do they listen ? as long as thecolour is right !Regards     Slim

ford_technical_ · Answer

remove the plug leads and inspect,wot your looking for is brown water marksaround the plug leads and spark plug chamber,after a long run this chambermay fill up with coolant.if this is spotted then it needs 2 core plugs (in the top of the cylhead)and maybe 4 plugs(they'll be heavilly corroded)ive done a few on this enginegood luckdavey

Slim · Answer

Thanks Davy.I did strip out leads and plugs just to check for anything funny,(didn't know about the core plug problem)Bought a coil pack =A353 + vat and all is now sorted.Regards    Slim

Fiesta missfire ?????????

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