I have a 2.8l vr that has been hard starting for awhile now and I have been trying to get it to pass emissions (it finally passed!) so now I have been able to take the time to check on possible causes. It was throwing the code for an o2 sensor which had been cut on the harness side so I fixed that and replaced the sensor because it was bad as well. The local vdub mechanic told me the crank sensor was bad so I replaced that to no avail. Today I hooked up a fuel pressure gauge using a bypass and the car holds at 50 psi while running and jumps to about 60 psi when the vacuum line is off the FPR. All that being said the fuel system loses pressure and drops off to a little less than 2 bar while sitting. Any thoughts?