Ford Focus like a bag of hammers

[caretech]

Father got a 55 ford focus 1.6. 50k on clock started to run badly (misfire) occasional back fire, replaced plugs, did compression test on all 4 pots -ok. Spark from all leads. was thinking might have jumped a tooth on belt ? or injector fault any thoughts please .

Grahame

 

[jetex]

These are prone to coil pack failure. Is the management light on ??

 

[caretech]

It came on steady first then started flashing. (he is 84 so drove car back home) hope not done too much damage.

 

[caretech]

The spark from the plugs look good. could the coil pack be striking at the wrong times ? is that what the problems were with them.

Grahame

 

[Burnerman]

The spark may appear to be fine on this, but the coil pack may break down when the plugs are under compression so its not a final test.
A diagnostic check should indicate which route to take, and if it is coil pack related, fit new plugs too.
John

 

[caretech]

Going to yard to get a s/h coil pack, already got new plugs but will try pack first.

Grahame

 

[Burnerman]

Do post back....
You may find that the management light may go off on its own accord - if it doesn't, any garage with diagnostic gear can sort this for you.
Be lucky!
John

 

[caretech]

Well done jetex and burnerman a coil pack from the scrap yard sorted the problem. Thankx for your help.

Grahame

 

[jetex]

Happy to help, and I'm sure Burnerman would say the same.

 

[Burnerman]

He certainly does, and good on yer Grahame......
A new coil pack on these isn't too expensive from a factors - around £50 for a German make, if I recall - but you can get them cheaper.
John