Medium and Heavy Trucks
Have Truck Repair Questions? Ask an Expert
Hi, It's Dan. Thanks for the request. Check the fuel suction lines and filters for leaks or restrictions and the fuel tank vent for a plugged vent causing a vacuum in the tank. Try running a separate hose from tank to pump to rule out or confirm a suction line problem. If the problem resolves it is an issue in the suction lines. If it still exists, check the pressure regulator and fuel check valve for problems. Let me know
Hi, Did you get this resolved?