TM 5-3805-291-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 1. Engine Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Check for leaks in oil core (WP 0027
1. If a leak is found, install a new oil
22. Coolant in Engine Oil.
00).
cooler core and change engine oil (WP
2. If problem still exists, go to Test 2.
2. Remove cylinder head (WP 0172 00)
1. If damaged, replace cylinder head.
2. If problem still exists, replace engine
and inspect for signs of damage.
(WP 0171 00).
1. Check for proper engine oil level and
1. Add or change engine oil, if needed
23. Engine Oil Temperature is
grade (TM 5-3805-291-10).
Too High.
2. If problem still exists, go to Test 2.
2. Check engine oil cooler for
1. Clean or replace engine oil cooler (WP
obstructions (WP 0010 00).
2. If problem still exists, go to Test 3.
1. If problem still exists, replace engine
3. Inspect oil bypass valves (WP 0028
00).
oil filter base (WP 0028 00).
2. If problem still exists, refer to
Malfunction 20, Coolant Temperature
is Too High.
Remove valve cover (WP 0024 00) and
If leakage is present around fuel injectors,
24. Fuel in Cooling System.
fuel supply and return lines (WP 0034 00)
replace seals on injectors (WP 0187 00).
from cylinder head. Cap return connector
and apply 100 psi (700 kPa) maximum air
pressure to fuel supply connector.
25. Fuel Dilution of Engine Oil. 1. Check for leaking injectors (WP 0011
1. If faulty, replace injectors (WP 0187
00).
00).
2. If problem still exists, go to Test 2.
2. Check for leaking fuel lines and fittings If damaged, replace lines and fittings (WP
1. Replace faulty valve train parts (WP
Remove valve cover (WP 0024 00) and
26. Valve Rotator or Spring
inspect valve train and cylinder head for
0180 00) or cylinder head (WP 0172
Lock is Free.
obvious signs of damage.
00).
2. If cylinder walls are damaged, replace
engine (WP 0171 00).
1. Connect MSD to diagnostic connector
1. If engine ECM does not communicate
27. Engine ECM Will Not
with ET, refer to Malfunction 29, MSD
Communicate with Other
Will Not Communicate with Engine
Systems or Display
ECM.
Modules.
2. If problem still exists, go to Test 2.
