Generac Power Systems TXP - Manual (Page 33)

RESULTS: 1.) Fuel Flow Good,
engine still won't start............................................ Go to TEST 23
2. ) Fuel Flow Bad........................................................ Go to TEST 20
3. ) Fuel Flow Good and engine
starts...................... ....Repair completed,
continue tests
TEST 20 - FUEL SHUTOFF SOLENOID
A.) Disconnect Fuel Shutoff Solenoid
Wire #14 at the Fuel Pump terminal.
Crank the engine for 2 or 3 seconds,
then touch the terminal end of Wire
#14 to the Fuel Pump terminal. Fuel
Shutoff Solenoid should actuate and
sound of Fuel Pump should change not­
iceably.
dis-
RESULTS; 1.) Fuel Shutoff Solenoid did
not actuate............................................
2.) Fuel Shutoff Solenoid
actuated................................................
•Replace Fuel Shutoff Solenoid
.Continue tests in "Diagnostic
Flow Charts", Section 3
TEST 21 - FUEL PUMP
A.) Disconnect BOTH Wires #14 at the
Fuel Pump terminal. Set VOM to "+DC"
and to "Rxl" scale. Zero the meter.
Connect one meter test probe to the
Fuel Pump connection terminal and the
remaining test probe to ground. Meter
needle should swing upscale and read
approximately 50 Ohms.
RESULTS: 1») Pump tests Good................................................Go to-Paragraph "B"
2.) Pump tests Bad^..............................................Replace Fuel Pump
B.) Reconnect both Wires #14 to Fuel Pump connection terminal,
engine and listen for sound of fuel pump.
Crank the
RESULTS: 1.) Pump does not pulse.......................................Go to Paragraph "C"
2.) Pump pulses normally............................ ..Continue tests in "Diagnostic
Flow Charts", Section 3
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