Managed to get valve out ok, It was sooty but not clogged up as I had been expecting. The solenoid works ok on 12v and now nice and clean. The problem is still there. I can drive a few miles with no problem,then when I restart it the fault is there. It's like a missfire / carb jet fault on a petrol engine. I can thrash it no problem but when I drive at a constant speed it plays up. As soon as I disconnect the
plug it runs fine. I can reset the
by disconecting the battery. I've changed the fuel filter assy as there was air bubbles in the fuel line, still no improvement. Any ideas !!