ENGINE STARTS BUT MISFIRES, RUNS ROUGH, OR LACKS POWER

TM 9-2320-386-10

Table 3-1. Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 3. Engine still fails to start.

Refer to FM 9-207: Operation and Maintenance of Ordnance

Materiel in Extreme Cold Weather (0F to -65F).

END OF TESTING!

4. ENGINE STARTS BUT MISFIRES, RUNS ROUGH, OR LACKS POWER

Step 1. Check to see if fuel shutoff switch is activated.

If so, push to reset (para. 2-3).

Step 2. Inspect accelerator pedal for full travel.

Adjust accelerator pedal travel, notify unit maintenance.

Step 3. Check vehicle for dragging brakes, low tire inflation, or cargo over-

load limit.

a. If defects are evident during check, adjust or replace components.

b. Correct overload condition.

Step 4. Check engine idle speed is set within specifications.

If engine idle speed setting is incorrect, notify unit support mainte-

nance.

Step 5. Check for restricted air cleaner.

If restricted, clean air cleaner element (para. 3-8).

Step 6. Check fuel supply system for water and impurities.

Drain fuel from fuel/water separator into a container until fuel is

clear (para. 2-3). If fuel is not clear before approximately one pint

(0.473 L) has drained, notify unit maintenance. Dispose of used fuel

properly.

Step 7. Check fuel filter for looseness.

If loose, notify unit maintenance to tighten fuel filter properly.

Step 8. Check drain valve for leaks.

If leaking, notify unit maintenance.

Step 9. Check throttle and accelerator cables for binding and sticking.

If cable(s) are binding or sticking, notify unit maintenance.

END OF TESTING!

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