I NEED SOME HELP WITH FUEL PRESSURE. I HAVE A AFPR AND
AN ACCEL GAUGE MOUNTED TO MY FUEL RAIL. I HAVE THE
PRESSURE SET AT 50 PSI AT IDLE WITH THE VACCUM LINE OFF
AND PLUGGED. WITHE THE VACCUM LINE CONNECTED I NOW
HAVE 40 PSI WHICH I FIGURE IS NORMAL. WHAT CONCERNS
ME IS THAT WHEN I REV. UP TO 3-4000 RPM IN NEUTRAL; THE
PRESSURE DROPS TO 35 PSI. IS THIS NORMAL. ANY HELP IS
APPRECIATED.
88 FORMULA 350
13.94 SEC. AT 99.3 MPH

 

BUMP
:-)


Same Question for the most part.

Jesse

 

NO. This could indicate a weak fuel pump. Its suposed to go up when you rev it.