Mechanogeek
True Classic
The AFM box is a finicky beast. If there is something blocking or causing the flapper inside to not move freely, that will affect performance.
AND, there is a very small cutoff switch inside the electronic box on the AFM that is a safety shutoff for the electric fuel pump, if damaged, it could cut off the fuel pump. Don't forget to check the wires to the fuel pump. If loose, they may not be making full contact, which could cause fuel pressure issues too.
AND, there is a very small cutoff switch inside the electronic box on the AFM that is a safety shutoff for the electric fuel pump, if damaged, it could cut off the fuel pump. Don't forget to check the wires to the fuel pump. If loose, they may not be making full contact, which could cause fuel pressure issues too.