I have had this 87 a while, have not gotten it ready to use. It cranked and ran few years ago when I bought it. Then it wouldn’t a couple years ago. Fuel pump got it going again. Now it will crank and run 3 or 4 seconds and die. Then it spins and sounds like it wants to crank kinda steady at a certain time in the rotations but no start. Fuel pressure at the hard line banjo on the intake is over 40. I jumped the fuel pump in the box and car hear it running. Those seconds it’s running it sounds like it’s hitting on all four. Any thoughts? One day I want it to be my daily.