I recently acquired a 1994 GT with ~120,00 miles, auto with 2.73 (I assume) gears and completely stock. I realize this car isn't going to feel that fast, but it feels like its down on power. Fuel filter and pressure regulator are both new (Motorcraft).
A few of the spark plugs looked a little dark and slightly wet when I changed them, but the electrodes were so worn that I attributed the issues to the gaps being huge.
I put a fuel pressure gauge on it yesterday and observed the following:
-KOEO: Sometimes pressure jumps to ~38 psi, but immediately drops to about 8 psi, and then continues to drop very slowly. Other times the pressure only jumps to between 6 and 12 psi, and then immediately drops. I never could get the KOEO pressure to hold at the "normal" ~35-45psi. The inconsistency bothers me as much as anything.
-KOER: The car starts right up and holds steady at 32psi at idle. It drops to about 31psi at 2000rpm in park. I don't have plates on the car so I can't road test it right now. Holds 32psi for at least 20 minutes after shutting down.
I've done a lot of reading on Mustang and Ford truck forums and can't find a definitive answer about what fuel pressure is actually right. I know my KOEO symptoms aren't normal-do they indicate a dying fuel pump?
Is 32psi at idle a problem? I've read that 30-40psi while running is within spec, but a lot of anecdotal "real world" comments suggest 35 is a better minimum.
Any thoughts?
A few of the spark plugs looked a little dark and slightly wet when I changed them, but the electrodes were so worn that I attributed the issues to the gaps being huge.
I put a fuel pressure gauge on it yesterday and observed the following:
-KOEO: Sometimes pressure jumps to ~38 psi, but immediately drops to about 8 psi, and then continues to drop very slowly. Other times the pressure only jumps to between 6 and 12 psi, and then immediately drops. I never could get the KOEO pressure to hold at the "normal" ~35-45psi. The inconsistency bothers me as much as anything.
-KOER: The car starts right up and holds steady at 32psi at idle. It drops to about 31psi at 2000rpm in park. I don't have plates on the car so I can't road test it right now. Holds 32psi for at least 20 minutes after shutting down.
I've done a lot of reading on Mustang and Ford truck forums and can't find a definitive answer about what fuel pressure is actually right. I know my KOEO symptoms aren't normal-do they indicate a dying fuel pump?
Is 32psi at idle a problem? I've read that 30-40psi while running is within spec, but a lot of anecdotal "real world" comments suggest 35 is a better minimum.
Any thoughts?