How to Perform Fuel System Test for Kohler Engine EFI System

Here is the instruction show you guide on how to perform fuel system test for Kohler engine EFI system.

NOTE:For systems with a retractable starter, a minimum battery of 12 volts, 4 amp hours is required.
Function of fuel system is to provide sufficient delivery of fuel at system operating pressure of 39 psi ± 3. If an engine starts hard, or turns over but will not start, it may indicate a problem with EFI fuel system. A quick test will verify if system is operating.

1 Disconnect and ground spark plug lead.
2 Complete all safety interlock requirements and crank engine for approximately 3 seconds.
3 Remove spark plug and check for fuel at tip.
a If there is fuel at tip of spark plug fuel pump and injector are operating.
b If there is no fuel at tip of spark plug, check following:
1 Make sure fuel tank contains clean, fresh,proper fuel.
2 Make sure that vent in fuel tank is open.
3 Make sure fuel tank valve (if equipped) is fully opened.
4 Make sure battery is supplying proper voltage.
5 Check that fuses are good, and that no electrical or fuel line connections are damaged or broken.
6 Test fuel pump module operation as described earlier under Fuel Pump Module (FPM).