Has had a new filter, and I tested the pressure, was at about 2 and a quarter bar. Is that too low? Was apparently a new pump aswell, obviously a cheap copy. And that's just revving in park.

Weights aren't seized, had to take apart the whole lot to get it all un-seized.

Good news is that I've got it running again. Whipped the dizzy out, set the air gap using some paper, put it back, made sure it was set to TDC at no.1 cylinder and it fired up. :D Also managed to set dynamic timing quite happily so that's all sorted. I also adjusted the AFM. Seems to run...

Oh right okay, I followed the guide on RPI engineerings website, I shall do it your way tonight. Will also play again with the dizzy to try get it starting again.

Okay, I set the AFM with ignition on between the outer two pins reading the voltage, which I set to 1.8v, it was previously something like 2.8.

Thanks for the replies, I'm inclined to think its the timing aswell. I shall check it again at the weekend. I did set the air gap according to haynes but I will check that again aswell For the AFM setting do you mean the screw on top at the back of it? If so yes and I have adjusted it to give...

I'm now back to square one, it isn't starting again, due to me messing about with it. I had to take the dizzy off and dismantle it to get the bob weights all moving again which they do now, but I rubbed off the marks I had made for the timing so set it all up using the marks on the engine and a...

It does have a smaller petrol tank, as in no more than 25 litres, and 4 large LPG tanks so it's clearly biased towards running on LPG. None the less it should still run fine on petrol surely for starting and warming the engine up? Thanks for the info vogue, I don't have access to fault reader...

I've already replaced the temp sensor so I would guess it isn't that. I've done some reading up on AFM problems, will try a few of them tomorrow. And it's a mono gas system.

My starting problem seemed to be the fuel pump wasn't working due to the plug connecting to it had fried itself.

I've just got a new 3.9 V8 disco1 that had starting problems, which I've now solved and it starts on the button everytime. But, it runs very badly on petrol, smoke coming out of the exhaust, sounds rough and won't really rev past 3000-3500rpm. However as soon as I switch to lpg it runs lovely...