TM 5-3805-298-23-1
0037
Table 1. Engine Misfires, Runs Rough, or Is Unstable - Continued.
037
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
8. Inspect fuel return tube (Figure 6,
No Leaks Identified - Proceed to
Engine Misfires, Runs
Item 1) between engine ECM
step 9.
Rough, or Is Unstable -
(Figure 6, Item 2) and fuel injection
Continued
Fuel Return Tube Leaks - Replace fuel
pump (Figure 6, Item 3) for Class I,
return tube (WP 0202).
II, or III leaks.
Proceed to Test Step 8.
9. Inspect fuel return tube and hose
Fuel Return Tube OK - Proceed to
(Figure 6, Item 1) between engine
step 10.
ECM (Figure 6, Item 2) and fuel
Fuel Return Hose Has Sharp Bends,
injection pump (Figure 6, Item 3)
Pinching, or Damage - Straighten or
for sharp bends, pinching, or
replace fuel return hose (WP 0210).
damage.
Proceed to Test Step 8.
Fuel Return Tube Damaged - Replace
fuel tube (WP 0202). Proceed to Test
Step 8.
0037-14
