Quote:
Originally Posted by dhanl82
I thought I would mention that sometime back I I bought a HF fuel pressure gauge set and also got zero pressure readings so I exchanged that one for another one and still got zero pressure readings. I tried everything, some people said to remove the schrader valves - did that and still no success so I returned that one and purchased the model 33800 sold by S & G tool that Tony has recommended. I have had no issues with it - works flawlessly.
Please excuse me if I am confused, but it seems to me considering your tests results showing low fuel flow and bubbles in the fuel line going from the fuel distributor ( the circuit that exerts pressure on top of fuel distributor plunger) - to the wur that, if in fact it is below spec., would lead me to think that there could possibly be another problem in addition to the wur problem, since your video shows this issue prior to the wur. I do not know what the "normal" fuel volume should be at this point in the circuit so I am just raising the question.
Dave
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Duly noted on the gauge set. I'll order up a quality set this week. Thinking on the flow rate issue a bit more, I'm going to put the fuel filter from my 964 (less than 1,000 miles and 3 months on it) into the SC to see if that's the cause for the low flow rate at the FD.
I put a new fuel pump in, and direct from that the flow is right about where it needs to be, but as soon as I plumb the accumulator and filter back in and test AFTER them the rate drops significantly and I get the bubbles. The filter is an easy swap and can help to mitigate another variable in the system.
If that doesn't work/help I'll then inspect all of the fuel lines to ensure they're not kinked/bent inappropriately as well as make sure they're free from obstruction.