Hard starting?

Hello all,

I rebuilt a 302 EFI and have replaced almost everything in the engine bay to the back of the rear tank brand new.


I have to cycle the key to the on accessory 3-4 times to have it fire right up but sometimes it does very on the weather. I’ve checked the Schrader valve on the fuel rail with a fuel gauge and it reads 38-40 psi without the engine on, I read on the forums that this is adequate and within specs so I left it hooked up overnight. Coming back to it in the morning it would drop to 3-5 psi but throwing the key back to the accessory position it would shoot back up to 38-40. With the engine on it would drop a couple psi’s but nothing major.

I have been running into the issue of this problem for a while now and have noticed that this only happens when the weather is cold, low 40’s or if it sits overnight.

I’ve replaced the fuel pump in the tank, secondary pump underneath the driver seat, new fuel pressure regulator. Brand new silicone vacuum hose. New spark plugs, spark plug wires, new battery, new starter, alternator, etc. You name it I have most likely replaced it. I’m honestly at a loss of what to do now.

Any help would be greatly appreciated. Thanks in advance!