Hi, thanx for answering. The car is a renault scenic 1.9 dci 2003. I filled this in earlier I thought you could view it. Yes, I know desiels ars the worst but its a lovely car and I am deperate to get it going. One mechanic has mentioned that the sensor is out of line with the timing, says its odd that it would start and run before all the other parts were put back. Going to alter that and see what happens. Fingers crossed!