TM 5-2420-231-23-1
0012
Table 1. Engine Runs Rough or Is Unstable - Continued.
012
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Visually inspect four high-pressure
Engine Runs Rough or Is
High-Pressure Fuel Tubes Bent or
fuel tubes (Figure 6, Item 1)
Damaged - Replace high-pressure fuel
Unstable - Continued
between high-pressure fuel pump
tubes (WP 0145).
(Figure 6, Item 2) and fuel injectors
Proceed to Test Step 5.
(Figure 6, Item 3) for sharp bends,
High-Pressure Fuel Tubes Loose -
damage, or loose connections.
Check and tighten high-pressure fuel
tube connections (Figure 6, Item 1). If
tubes remain loose or leak, replace
high-pressure fuel tubes (WP 0145).
Proceed to Test Step 5.
High-Pressure Fuel Pump Supply
Tubes OK - Replace all fuel injectors
(WP 0146).
Proceed to step 4.
Figure 6. High-Pressure Fuel Tubes.
0012
