Hi Stephen,

Not sure if I am missing something here. If the vehicle has no spark as a non-starter, I would assume this would be tested at some point at the coil. If this is the case, it would be pointless replacing the rotor and cap. If there is a spark there and nothing at plug leads then the fault is self-evident. Be careful about the validity of the ECU test. Some companies just bench test the ECU for X mins and if it doesn't play up then its deemed as ok. Now if its bench tested for X + 1 mins...... The rotor arm is however a notorious weak point. I try and buy the one without the metal insert.

Regards

Pete M