Zipper-suited sun god and
When I first installed my fuel system, I plugged my FPR in out-of-the-box w/ no gauge (a compact EFI Aeromotive regulator). The car would start but not stay running. I purchased a timing light and fuel pressure gauge, set the base timing at 8* and plugged the gauge in. When the ignition was first turned to on, the pressure would spike off the gauge (0-60) and then drop to right back down to zero. I do not have a check valve in my supply line and am using a Mallory georotor external fuel pump. I adjusted the pressure to 40psi when the ignition is turned to "on" for the initial 3-seconds of fuel pump operation, but now during start the pressure reads zero until the starter is released then jumps back up to 40. what the heck is going on? Is this normal ops? On my Mustang (that has a check valve) pressure holds constant around 40 during start, during the key-on prestart pump ops, and even holds pressure for days (it's reading 30 now and I drove it last Monday or so).