Quote:
Originally Posted by Alan L
Something very weird going on here. I just hope you are testing these pressures correctly. You don't usually test pumps after fuel filter - tells you nothing other than what the pump spec is for pressure. What you need are WUR pressures and System pressure. If you really do have a system pressure of 9 bar, you won't have enough shims in the FD to reduce it - my guess. Probably only 2-3 shims and about 0.5 bar to loose. But worth a look first. Take all the shims out and see what you get.
Alan
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I did the "fuel pump" test after the filter because I wanted to see the raw fuel pressure before the fuel head. I hooked up the WUR/fuel head for the normal system and control pressure tests. The WUR pressure was really high 4-5 bar. The system pressure buried the gauge.
Yes, I double checked my gauge hook-up. Closing valve on the WUR side.
Again, the fuel head was literally screaming - I am assuming way to much pressure. I didn't want to run this very long - internal damage to the fuel head (?). Tonite I am looking at the shims. I just hope there are some shims being used. If not - another step to deal with.