Series 50 – Section 17.8 Fuel Supply Valve

Section 17.8
Fuel Supply Valve

To determine if the fuel supply valve is causing starting difficulty, perform the following steps: ‪

1. Check that fuel supply valve is open; refer to OEM guidelines.
   1. If the fuel supply valve is closed, repair is necessary; refer to "17.8.1 Fuel Supply Valve Repair" .
   2. If the fuel supply valve is open, check the fuel filters; refer to "17.9 Plugged Fuel Filter(S)" .

Section 17.8.1
Fuel Supply Valve Repair

Perform the following for fuel supply valve repair:‪

1. Open the closed valve; refer to "2.8.2 Fuel Return System Check Valve" .
2. Prime the fuel system; refer to "2.7.1 Replacement of Fuel Filter" .
3. Verify fuel supply valve repair; refer to "17.8.1.1 Test Engine with Fuel Supply Valve Open" .

Section 17.8.1.1
Test Engine with Fuel Supply Valve Open

Perform the following to determine if opening the fuel supply valve resolved starting difficulty:‪

1. Attempt to start and run the engine.
   1. If the engine starts and runs, no further troubleshooting is required. Shut the engine down.
   2. If the engine fails to start and run, check the fuel filters; refer to "17.9 Plugged Fuel Filter(S)" .