Ok so I've almost finished my 4bt swap into a 96 f150 eddie bauer and I've had it started and running but I had no oil pressure. I took off my turbo line and still nothing. My oil filter was also empty so I borrowed a preluber from a friend and ran a half gallon through it into my sending unit. Still nothing. What do i need to check for? I figure oil pump first. If that isn't it is there anyway to check my pickup tube without pulling my motor? Or anything stupid I'm overlooking?