[rfuerst911sc]

So about two months ago my JD 332 garden tractor started running rough after about 15-20 minutes of mowing . Will start easily cold and run great for that 15-20 minutes .

Last week I replaced the fuel filter by the engine . No change . Today I pulled the fuel tank , cleaned it and reinstalled . Installed a new in tank tygon fuel line and in tank filter . Also installed two new rubber bushings in the tank where the fuel lines enter and exit .

Ran new fuel line from the tank to the fuel pump and fuel pump to engine fuel filter . Bled the fuel filter housing until a solid flow of diesel came out . Put it all back together , lit the glow plugs and fired her up . She started immediately and idled great . Let it warm up for a few minutes and started mowing .

Again about 15-20 minutes later she started to lose power , like it's running out of fuel . I am stumped at the moment on what to do next . Any ideas ? Tractor has about 1500 hours but has run like a top for years with no issues . It's so weird that it starts and runs perfect then it doesn't .