MG
The Classic Marque

Me too Guy but it says it is suitable for unleaded, methanol, ethanol and diesel, but nit for bio diesel.

Les,

Where is the module, inside the dizzy or external? Do you have any sort of freezer spray you could apply to it to cool it to see if it springs back to life.

I don't agree with the H&H guy about the failure happening at one temp reliably but it depends on the precise cause. I've had temperature related issues occur across a range and it looked to be connection/solder fatigue ...

As Guy said his was unpredictable as was mine, so I would be checking the whole low tension circuit for breaks or earthing out somewhere. It is frustrating so you need to be methodical about it.

Trev

More confusion- spoke to H&H, chap was very helpful, apparently the ignition units can fail but he said would always show signs when reaching the same temperature. Yesterday it failed at 160 deg but 10 minutes later it started and ran fine upto 190 deg!!
He suggested it could be elsewhere in the ignition system, switch, bad connection for example.
Just know it’s going to be something reall...

Thank you Guy.
Trying that cable is an easy thing to do. Having said that, the connector that goes on the cable and pushes into the coil - can’t find one anywhere. Went to Ribblesdale Auto Electrics in Preston, massive place that, as the name suggests, deal in auto electrics. Got the wire from them but they don’t sell the fittings, no demand apparently- really!!
Tried another 3 places ...

Electric fuel pump, is it fitted in the engine bay or on the rear bulkhead next to the fuel tank?

I initially had issues when I fitted a Hardi pump, to replace an SU electric pump, in the engine bay. The Hardi is a 'pusher', not a 'puller', so struggled to keep up demand. Moving it to the rear solved my issue.

You have excluded the coil, having replaced it with an 'old one', but it d...

Must admit I thought ethanol fuel needed R9 hose?

Les that is exactly what mine was doing. The copper cores inside the insulation still made contact until the insulation warmed and became more supple. Then the wire sagged under its own weight, stretching enough to pull the copper wires apart. When it cooled again the insulation stiffened up shrank a bit and the cores made contact again. Mine was erratic like that for quite a while before I discov...

Thanks very much. Annoyingly, we passed through Telford on Saturday morning.

But we do have to visit Hereford tomorrow, and they have it in stock; check again in the morning.

Car Builder Solutions noted.

What I can’t understand about this problem is its unpredictability. Can run fine for a while then stop. Leave it for a bit then can run fine with no issues. That is what is really doing my head in.