Morris Minor Owners Club

Apparently HT leads increase in resistance over time and this can cause poor sparking and running etc.

I wonder if anyone has any idea that the increased resistance in an HT lead can then cause the rotor arm to short internally.

I seem to have had both occurring at once...took a bit of figuring out ..... no sooner had I thought it was fixed (new HT leads) when the car began to cut out again. This time rotor arm!

Cheers

Never found the resistance of copper ignition leads to change - only the insulation might eventually go down.

Usual problem I’ve found, with carbon ignition leads, is continuity. Standard versions don’t like high power coils, for instance...

Maybe just coincidence both developing faults at the same time? Regards rotor arms, I have had a few failures of these over the years and would recommend you get a good red rotor from Distributor Doctor. I fitted one about six years ago and it has been fine ever since....

Thanks for the input!

regards
Chris