Mini Cooper S Fuel System

I Try Putting In Fuel But Every Time I Do It Acts As If The Tank Is Full, And It Isn’t.

Obd2 Says Check Connection Try Again Vehicle Has No Spark And Fuel Pump Relay Is Not Working.

So, I Have The Vehicle Listed Above, I Replaced The Timing Chain And It Started Ran Good. When I Was Driving It Began To Overheat. So, I Had...

It's Supercharge. Checking The Fuel Presser, Turn The Key On And It Go To 50 - 52 Psi But In 30 Seconds It Goes To 0.