What to Tune First

[Dirktdolman]

No smell but I did re run the both test (Key-on/Engine-off and running with the reference tube removed). Both tests had the same results 54 psi. I wonder if they gave me the wrong FPR.

[Dirktdolman]

The service manual give these specs (for key-on engine-off several times):

55-62 psi VIN: V, T, U

48-54 psi VIN: Z

VIN = engine code in VIN (8th letter/digit).

I went down to my local parts store and borrowed their pressure tester. The Key-on/Engine-Off and the Engine-on (run) with the reference hose disconnected resulted in the same pressure of 56-58. During the run test the needle shakes back and forth.

[400ss]

with the engine RUNING, disconnect the reference hose... it should be in 58. if it is in 56 is ok, but it should be steady, do some WOT, and fuel pressure should stay in the same range , if you have a bad fuel pump it will loose pressure in WOTS.