John Deere PE6068 Engine fuel issues

Any good Deere mechanics out there, I have a customer with a 6068 engine with the following codes and symptoms. Unit has lots of power and runs fine for 30 seconds when he begins working and loads it up it loses power dramatically and smokes a bit.

I am thinking he may be drawing air into the suction side of the fuel pump, he changed his fuel filters 100 hrs ago, I told him to do it again and check out his hose from the fuel tank to the first filter.

Any thoughts??

Spn 94 Fmi 17...

John Deere PE6068 Engine fuel issues

John Deere PE6068 Engine fuel issues