3406B 7FB fuel issue

I just bought an 85 359 Pete to do a complete restoration. I know very little about the old Mechanical Cats. I started driving with the E models.

Anyhow, I’ve been fixing small issues and took it for a ride. As soon as I pulled into the driveway, it sputtered and died. I have 100 gallons in the tanks so I didn’t run out of fuel. I changed both fuel filters. The secondary wasn’t too bad but the fuel looked orange that was left in the filter. The primary was a mess. It was black and pretty much plugged up with what I’m assuming to be is rubber from the fuel lines. I felt it and it had a gritty, oil feel.

I changed filters and filled both with fuel. It has the prime pump in top of the secondary. Do I still need to prime it by hand since I filled the filters? It will turn over but won’t start. Obviously, it’s not getting fuel.

I will be draining the tanks and cleaning out the garbage. It’s getting new plastic fuel lines. I’m thinking of putting an AirDog on it and an electric prime pump. The engine was overhauled 250k ago but has sat in a garage for the last 7 years. I’m probably going to pull it and rebuild it.

Any tips or suggestions?