P0301 PO303 Ford Focus 1.6

Question

Ford Focus 1.6 Mk1 2004 petrol

Engine management light came on -code po301.
Engine Management light back on po303.
Pending multiple misfire.

Changed coil pack.
Sparks done recently.
Ht leads fine.
Drives fine.
Engine management light back on- what now? Tdc sensor has been suggested?

Many thanks in advance =)

Answer 1

HI there,

I would check the engine compression. Since 2 of 4 cylinders are misfiring it's possible the timing is off just a touch and causing the misfire codes to appear.