KimAndersen wrote:As you already have replaced the fuel filter is this now out of diagnostic plan, but there could
be other things there are restricting the fuel flow to and from the high pressure pump.
Is there a priming pump in the fuel tank or is the fuel being sucked from the tank !!!.
I have completely bypassed the filter because I know the plastic housing that the priming pump is situated on is renowned for inducing air leaks and the fault still occurred. I have a really good flow of fuel on the low pressure side.
We don't have the necessary equipment to control the pressure regulator to perform a pump proof test. We have a blanking kit which tricks it to produce maximum pressure.
We don't have the necessary equipment to control the pressure regulator to perform a pump proof test. We have a blanking kit which tricks it to produce maximum pressure
The injectors are disconnected and regulator isn't on the system so the peaks and troughs should be pump rotations?
So the answer to the last question is 'no not really'.
So if you've done the pump proof test correctly do you think the system is able to create the designed pressure, if not the next question is why not & which way do you go now ?? (if the FRP sensor is telling the truth)
I don't suppose you found the answer to this one in the end? I have a car at work with exactly the same symptoms. I have scoped every thing but the fault has never occured when the scope has been attached.