i can hear pump priming and also running whilst cranking, very good pressure its got to be metering head or no voltage to the cut off valve. i found this have a look as im doing all this 2moz so will let you no.
http://www.justanswer.com/questions/...-to-cold-start press the show more icon.

its got to be summit daft as it ran so well 2 hours prior.
my mate gave me a complete metering unit he had but it hasent got the 2 electrical sencors on it, is this because its off a 3i,