Poor Running Mk4 Fiesta 1.25 Zetec

[nigel3809]

Hello

My other halves 1996 ford fiesta mk4 1.25 zetec manual gearbox is not running well.

It starts fine, but when driven off it loses power and jumps about, especially when under load, this happens until the engine warms up then it gets better.

So far I have changed the fuel filter, and tested the resistence in the plugs and HT leads, and they were fine.

Would I be right in saying checking the MAF sensor and coil is next? Also if the coil needs to be replaced, on Euro car parts web site they do two coupling types, Din and Saw toothed, any idea which is which and will be fitted, im hoping the latter as it cheaper.

Any advise would be welcomed.

Thanks

[nigel3809]

Forgot to mention I have also changed the earth cable from the rear of the engine to the bulkhead, as this had snapped also