TM 5-3895-385-23-1
0033
Table 1. SPN#157, FMI#0 ― Fuel Rail Pressure Higher Than Commanded Pressure -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. If not damaged, restore
equipment to original condition,
and proceed to next malfunction.
3. Restricted fuel drain line.
1. Disconnect the fuel drain line
connecting the fuel pump drain
to the fuel return manifold (WP
0448, Vol 3, Figure 54).
2. Attach pressure gauge and
adapter at the high-pressure
fuel pump drain manifold (WP
0448, Vol 3, Figure 49).
3. Start engine (TM 5-3895-385-
1. If fuel pressure is more than 2.7
10) and run at idle. Measure
pounds per square inch (psi)
the fuel return drain line
(18.6 kiloPascals (kPa)), turn
pressure.
keyless engine switch to OFF
(TM 5-3895-385-10), restore
equipment to original condition,
and proceed to next malfunction.
2. If fuel pressure is less than 2.7
psi (18.6 kPa), turn keyless
engine switch to OFF (TM 5-
3895-385-10), and replace fuel
pump actuator (WP 0330, Vol 2).
4. Damaged fuel lines.
1. Start engine (TM 5-3895-385-
10) and run at idle.
2. Inspect fuel lines for proper
1. If damaged, turn keyless engine
size, leaks, bends, or clogs and
switch to OFF (TM 5-3895-385-
damage (WP 0331, Vol 2).
10), and replace lines as needed
(WP 0331, Vol 2).
2. If not damaged, turn keyless
engine switch to OFF (TM 5-
3895-385-10), and proceed to
next malfunction.
5. Damage to the rail fuel
1. Inspect fuel pressure relief
1. If damaged, replace fuel
pressure relief system.
valve for damage or leaks (WP
pressure relief valve (WP 0337,
0337, Vol 2).
Vol 2).
2. If not damaged, proceed to next
test.
0033-3
