[rognelson777]

Posted for transmission help on here for motorhome and need help with fuel pressure diagnostics 1998 gm 7.4l 454 8 injectors.

Checking fuel pressure today, turn on key, pressure goes to 54 then drops quickly to 49 and stays there, start cold engine 32 degrees outside and pressure goes to 50 / 51 and when you rev engine, moves 2/3 psi put under load in drive full throttle and stays same. shut off engine needle jumps for a second up then back to 49. will stay there with key of for 1/2 hour.

Do you think pressure is okay? Engine starts and runs great, just dealing with this transmission vibration towing, going to change wires, plugs and cap/rotor, but do not want to install if I have to take it all off to do other repairs