the motorhome stalled and then would restart up. then it just quite. had the fule pump replaced but still not getting gas like it should. starts and runs but not over 35 floored. any sugestion?
Check for collapsed fuel lines.
Not knowing anymore than what you have said about your problem, I would check the fuel tank for obstructions and pick-up tube also tank vent line and cap. Also check all fuel lines from tank to fuel pump for problems also fuel filters and if the 454 has a Quadrajet carb check the filter in the carb it's self. Also if you have power brakes with a booster that uses vacuum from the engine with a rubber vacuum hose check it for cracks or pin holes. If you have the HEI distributor check the rotor for burn spots or cracks hope this helps good luck.
One other thing, check all vacuum lines if any on and around carb and replace carb mounting gasket. good luck.
Thank u! I'll get thoses things checked out. apreciate your response