TEST OPTIONS
REASON FOR QUESTION
Visual inspection
KNOWN INFO
10.
NO
YES
Replace fuel pressure
regulating valve (para 4-3).
b1. ENGINE CRANKS BUT DOES NOT START OR ENGINE STALLS AFTER STARTING (CONT)
TM 9-2320-365-20-1
2-106.6 Change 1
Faulty fuel pressure
regulating valve.
Faulty orifice tube assembly.
Faulty cylinder head.
POSSIBLE PROBLEMS
Malfunction in fuel system.
Engine cranking speed OK.
Fuel return hose OK.
Fuel supply hose OK.
Fuel tank OK.
Fuel/water separator OK.
Fuel transfer pump OK.
Fuel transfer hose OK.
Fuel filter OK.
Fuel tube OK.
Does fuel flow from orifice
tube?
If fuel flows from orifice tube,
fuel pressure regulating valve
is faulty.
Go to step 11 of this fault.
TEST OPTIONS
REASON FOR QUESTION
Visual inspection
KNOWN INFO
11.
Faulty orifice tube assembly.
Faulty cylinder head.
POSSIBLE PROBLEMS
Malfunction in fuel system.
Engine cranking speed OK.
Fuel return hose OK.
Fuel supply hose OK.
Fuel tank OK.
Fuel/water separator OK.
Fuel transfer pump OK.
Fuel transfer hose OK.
Fuel filter OK.
Fuel tube OK.
Fuel pressure regulating
valve OK.
If fuel flow is not present,
cylinder head is faulty.
If fuel flow is present, orifice
tube assembly is faulty.
Replace orifice tube
assembly (para 4-7).
YES
Notify DS Maintenance.
NO
Does fuel flow from cylinder
head?
