Fuel System Capacity Test

FUEL CAPACITY (VOLUME) TEST
- Remove the carburetor air cleaner.
- Slowly (fuel line is pressurized) disconnect the fuel line at the fuel filter.

WARNING: Use care to prevent combustion of spilled fuel.

- Place a suitable non-breakable container (1/2 liter or 1 pint minimum) at the end of the disconnected fuel line (a piece of hose may be needed on the fuel line end).
- Disconnect high tension wire from coil.
- Crank engine 10 seconds, the fuel pump should deliver 0.158 liters (1/3 pint) of fuel or more.
- If fuel flow is to specification perform pressure test. Fuel Pressure Test
- If fuel flow is low repeat procedure using a non-breakable container of gasoline connected to the fuel pump inlet.
- If fuel pressure is to specification, the problem is either a plugged in-tank filter, or a kinked or leaking fuel pump inlet hose.
- If fuel flow is still below specification, replace fuel pump.