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TM 9-2320-364-20-2
2-1044
2. ENGINE STARTS BUT MISFIRES, RUNS ROUGH, OR LACKS POWER.
INITIAL SETUP
1.
Tighten fittings, or
replace fuel tank(s) or
fuel hoses (Para 4-8
or Para 4-9) and
(Para 4-12). Verify
repair, go to Step 8 of
this Fault.
START
YES
NO
Turn signals operate indicating
10 to 14 vdc are present on
wires 240 and 241 at battery
No. 4.
Fuel priming pump operates.
Fuel tank(s), fuel/water
separator hoses, or fittings
loose or damaged.
Defective or leaking fuel/water
separator.
Damaged, leaking, or clogged
secondary fuel filter.
Fuel contamination.
Wire 240 or 241 from battery to
circuit breaker CB23 or CB22
faulty.
Circuit breaker CB23 or CB22
faulty.
Wire 240 or 241 from circuit
breaker CB22 or CB23.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Visual inspection.
Fuel/water separator will not
receive enough fuel if fuel
tank(s), hoses, or fittings are
damaged or loose.
2-17. FUEL SYSTEM TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
STE/ICE-R (optional) (Item 3, Appendix G)
Multimeter (Item 44, Appendix G)
Remover, Connector (Item 55, Appendix G)
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
Top engine access cover opened,
(TM 9-2320-364-10)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
Materials/Parts
Lockwasher (22) (Item 195, Appendix F)
Are fuel tank(s), fuel/water
separator hoses, and fittings
free of leaks and crimps?
WARNING
Read WARNING
on Page 2-1045
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