• need help with my van

I have a 94 dodge ram B250 3.9lt I just replaced the head gaskets new spark plugs cap ajd rotor and it was running for a week and then it gave up on me and I'm about to imstall a new fuel pump any clues on what else it could be.I was also wondering if it could be the vans computer any help would be apperciated need info asap I'm starting my own mobile auto body business if u have any questions on body or paint be free to ask I'd be glad to help

 

Have you tested the fuel pressure or are you just hoping to get lucky by changing the FP?

Are you getting spark off the ignition coil?

Will the engine fire if starting fluid is sprayed down in the intake?