Troubleshooting Low Fuel Pressure

 

• If the pressure is too high, the solenoid will not open and the generator will not start.
• If the pressure is too low, the generator will be starved for fuel and will not start or will not run smoothly or be able to support a load.

 

Common Causes

In most cases, a dealer or installer will need to address these issues: Where Can I Find a Generac Dealer in the U.S. Or Canada?

• The liquid propane tank pressure is inadequate - How Do I Determine the Proper Fuel Pressure for My Air-Cooled Home Standby Generator?

• The natural gas service or meter is inadequate - How Do I Determine the Proper Fuel Pressure for My Air-Cooled Home Standby Generator?

• The pressure regulator is not set or sized correctly - This should be done by the dealer, installer, or gas company.
• The fuel line is not properly sized - How Do I Determine the Fuel Line Sizing for My Air-Cooled Home Standby Generator?

Proper fuel flow is critical for generator operation under full load. Incorrect fuel pressure, undersized lines, or improper fuel conversions are not covered under warranty.