Had a cambelt change on my Clio took head off and changed the valves put it all back together and the car won't start it goes to turn over but doesn't quite get there tried new battery checked fuel pump. theres power to the fuel injecters put power cuts after a few seconds (used a tester) . Every were has compression but the car still won't go everything we can think of has been checked,thinking maybe a electrical fault but not gt a clue with what would be very greatfull for advice