Quote Originally Posted by dmcman73 View Post
Then connect a fuel gauge on your system and test the pressures. You should see 60-75PSI with the valve closed on the fuel pressure tester.

One place to look at is the fuel accumulator. Pull the small hose off the end of it (leave the two larger connections alone), some fuel should come out from there, that's normal. If you have another piece of hose that is the same diameter, slip it over the nipple of the accumulator and point it downwards into a pail. Jump start the RPM relay to get the fuel pump going. You should see some fuel come out of that nipple for a few seconds and then stop. If it does not stop and it is coming out like a garden hose after about 5 seconds, then the diaphragm inside the accumulator is damaged and it needs to be replaced.

Also, did you pull all the injectors off, jump the fuel pump, press down on the flap and see if fuel is coming out from the ends of the fuel inject hoses? If so, was fuel coming from all of them?
I've replaced the fuel accumulator with a brand new one after this issue started so it's not the accumulator. Yes pulled all the injectors off and get good flow out of all of the hoses.

I'll update on Sunday after I've done the pressure test