Originally Posted by
cornwallnick
Picked up car from garage injectors have been tested via leak off test all passed very easy . Turbo is fine. Diesel pump is asking for the right amount of power - however I have been advised to buy a Delphi fuel pressure regulator valve and have done so this will be fitted on Monday /Tuesday and I will update post then . Maybe just maybe we are finding a way to this dreaded fault code p0251 .
allot of these faults similar to yours are curred by the black box on the turbo think its part of the actuator. someone on ebay sells repaired ones that do the trick. im not sure if a leak down test on those injectors get to the bottom of this its more of the program that runs them. there should be plenty of info on a mondy site its a very common problem. if you live near west cornwall go to helston deisel you would only need one visit