Autosport Labs

The later Zetec sensors are shorter, mines out of a late Ford Fiesta.

I had the car running on Megajolt (well!) last year and aside from the head gasket swap and moving the battery to the boot, the car is unchanged from the last time I drove it. Think this could well be the problem, have you used a common ground for all the megajolt/ford bits ? Try running a wire fro...

Have you tried without the megajolt plugged in ? ie. just run it on the ford parts, you should see steady 10 degrees just running it like this.
It may just be your timing light, it may be picking up the second (wasted) spark. More modern timing lights can do this.

No the camshaft turns at half engine speed.

No mines a this one : http://www.gunson.co.uk/item.aspx?item=3442 No it doesn't read double. But at first off it was all over the place, but the HT lead connector wasn't a nice tight on my leads. Twisted it so it contacted the lead at both sides and everything was fine then. 10 degrees on the edis a...

Think everyone must be on holiday still

Thats basically how I did mine though.

NP

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Hows you VR sensor, had a similar problem with mine.
Turned out to be it was 2 close to the trigger wheel, now set with a gap about eighth of a inch.

If you have no luck around your area and decide to get dave to set it up. Let me know and I'll meet up with you and show you the way. Always enjoy a trip over there.

Daves (boggy senior) a great guy and the 8 valve vauxhall is one of his favourite engines. Did he set it up on the RR, known him for over 20 years, he'll be well into his seventies now.

Causes too much electrical noise and interferes with the jolt

Too little resistance in the circuit possibly ???

You get resister plugs in there ?