93 f150. 5.0

New battery, terminals, and starter. All replaced 3 months ago along with oil and air filter. Drove it to work fine. No issues. I've noticed low oil pressure since oil change and it's been running a tad hot. Trying to leave work, it wouldn't start. Cranks, but won't start. Now, at 2 in the afternoon, 90°+, it will start no problem what so ever. Fires right up. Turn it off. It fires up. At night, 70°, it will not start. It has burned up almost all the oil, hence the oil pressure, and it's been getting terrible gas mileage. Dual tanks so I should have two individuals fuel pumps right? So I could just flip the switch to the other tank if that's the issue couldn't I? I've banged on the fuel filter and nothing. Spark plugs? Distributor? Tfi? Or whatever someone recommended.... kind of scared to drive it home.

 

You could get a fuel pressure gauge for $50 and see what the fuel pressure is. That's a start.
But if you burned up all your oil, you have a problem. Pretty serious one if it burns that much oil. Are you sure it's not leaking ?

 

I'm sure. Park it in the same spots everyday. As long I start it periodically, it's fine to start at night. Drives fine too.