Misfires etc

[Paulprior]

Hi SteveD, if you have a pdf that would be a great start

[davep]

Steve_D said:

None of the ignition system goes near the ECU so if the fault is related to positioning/movement of the ECU then the ignition can be ruled out.

Not strictly true. The ECU senses Ignition On (+ 12V dc) at pin 19 and pin 39 forms an essential pulse waveform I/P derived from the Ignition Amplifier that represents the spark frequency/timing or RPM. Lack or glitches of either will cause problems.