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
14. Remove valve cover (WP 0024 00) and Make any necessary repairs.
3.
Engine Misfires, Runs
oil pan (WP 0181 00). Check for worn
Rough, or is Unstable -
cam lobes, lifters, or push rods for the
Continued.
misfiring cylinder. Check for
mechanical problems.
1. Isolate source of noise and remove and 1. If damaged, replace engine
4.
Mechanical Noise (Knock)
accessories.
inspect suspect engine driven
in Engine.
accessories.
2. If problem still exists, go to Test 2.
1. Replace any faulty valve train parts
2. Remove valve cover (WP 0024 00),
(WP 0180 00) or replace cylinder head
check valve lash (WP 0179 00), and
(WP 0172 00).
look for obvious signs of mechanical
problems.
2. Set valve lash if necessary (WP 0179
00).
3. If problem still exists, go to Test 3.
3. Remove cylinder head (WP 0172 00) 1. Repair as necessary.
and visually check for obvious signs of 2. If problem still exists, go to Test 4.
damage to cylinder block and head.
Including camshaft and valve
mechanism, cylinders, valves, head,
and block.
If damaged replace engine (WP 0171 00).
4. Remove oil pan (WP 0181 00), inspect
for internal problems with crankshaft,
connecting rods etc.
1. Connect MSD (WP 0005 00) and check 1. Troubleshoot any active codes before
5.
Noise Coming from
for active diagnostic codes.
continuing with this procedure. Refer
Cylinder.
to WP 0009 00.
2. If problem still exists, go to Test 2.
2. Perform Fuel Quality Test (WP 0011
1. Remove unsatisfactory fuel from fuel
tank. Install new fuel filters (WP 0035
00 and WP 0036 00). Use proper grade
of clean fuel in fuel tank (WP 0020 00).
2. If problem still exists, go to Test 3.
3. Perform Electrical Power Supply
If problem still exists, go to Test 4.
Circuit Test (WP 0013 00).
4. Use MSD to perform Injector Solenoid 1. If not all solenoid are being energized,
Test to determine if all injector
perform Injector Solenoid Circuit Test
solenoids are being energized by the
ECM. If not, perform Injector Solenoid 2. If problem still exists, go to Test 5.
Circuit Test (WP 0013 00).
