Fuel Pressure Nightmare
I bought a 1993 Ford E350/460 motor Shasta RV this year. The RV sat for a long period of time before I bought it. So first thing that I had done was have the fuel tank cleaned out and a new fuel pump ...
Forum Discussion
On your rig, fuel delivery is determined by Manifold Absolute Pressure. Your symptoms however sound exactly like fuel starvation. An obstructed fuel pump or filter will still slow enough to start, but not enough to deliver power at cruising speeds. Your problem could go away after a restart simply because shutting everything off lets the flakes fall away from the strainer.
Delamination is not a rare problem unfortunately, and bio-fuels (i.e. ethanol) seem to contributor, as some components were never designed for it. It could also just be plain old rust, if water had ever gotten in there previously. Either way.... fuel pumps and fuel filters don't normally plug up like that repeatedly, unless there is a problem with the tank.
Delamination is not a rare problem unfortunately, and bio-fuels (i.e. ethanol) seem to contributor, as some components were never designed for it. It could also just be plain old rust, if water had ever gotten in there previously. Either way.... fuel pumps and fuel filters don't normally plug up like that repeatedly, unless there is a problem with the tank.
