Section 4 • Troubleshooting
September 2008
4 - 4
T70, T90 & T120 Super Quiet Generator
Part No. 134277
TROUBLESHOOTING
FAULT
POSSIBLE CAUSE
SOLUTION
Low Speed
Defective injectors on engine
Have injectors checked by a
qualified technician
“Surging” engine speed
Check engine fuel, oil,
and air filters
Engine turns over (cranks),
Unit out of fuel
Check fuel level in tank, fill as
but won’t run
needed
Loose or broken wire in
Check wiring to verify 12V DC
control circuit fuel injection
is being supplied to the pump
pump solenoid
solenoid
Defective solenoid
Replace solenoid
Clogged fuel system
Check fuel system
Air in fuel system
“Bleed” fuel system
Defective fuel pump
Check and replace if defective
Clogged air intake
Check air cleaner
Clogged exhaust
Check exhaust system
Contaminated fuel
Check fuel/water separator and
tank for contamination
Defective injectors
Have injection system checked
by a trained technician
Lost engine compression
Have compression checked by
a trained technician
Engine won’t crank
Loose battery cable
Check cables and battery
or discharged battery
electrolyte level. Recharge
as necessary
