ENGINE CRANKS BUT DOES NOT START; AND ELECTRICAL CIRCUITS ARE OPERATING (Cont)

TM 9-2350-238-20-1

2-11. TROUBLESHOOTING INFORMATION (CONT).

Table 2-3. UNIT TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

ENGINE CRANKS BUT DOES NOT START; AND ELECTRICAL CIRCUITS ARE OPERATING

(CONT).

Remove hull engine compartment deck assembly lid for access to

engine. Refer to page 2-935. Disconnect fuel return line (2) at quick-

disconnect (3). Remove quick-disconnect (check valve) (4) from fuel

return line (2) in container (1).

Start engine and run for 1 minute at 650 rpm. Submerge fuel return line

(2) in container (1). Check for air bubbles. If bubbles are present,

check for air leaks in low pressure system. Stop engine.

NOTE

Amount of fuel collected should be 0.5 to 0.8 gal.

(1.9 to 3.0 l).

If fuel collected is less than 0.5 gal. (1.9 l), inspect engine fuel pump and

check for plugged fuel lines.

If fuel pump is damaged or fuel lines are plugged, refer to page 2-438

Connect quick-disconnect (check valve) (4) to fuel return line (2).

Connect fuel return line (2) at quick-disconnect (3).

Check for water in primary and secondary fuel filters.

Step 9.

Drain water from fuel filters, refer to TM 9-2350-238-10. Replace dirty

fuel filters, refer to page 2-471 and page 2-475.

Step 10. For cold weather starts, check purge and prime solenoid valve for operation.

If valve does not click, replace valve. Refer to page 2-479.

Step 11. Check for damaged intake air cleaner and filter element.

If damaged, repair as required. Refer to page 2-446.

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