TM 5-3810-306-34
TABLE 3-1. DIRECT AND GENERAL SUPPORT TROUBLESHOOTING (CONTD)
Malfunction
Test or Inspection
Corrective Action
14. ENGINE MISFIRING
Step 1.
Fuel injector nozzles plugged or inoperative.
a. Remove and test fuel injectors. (Refer to page 5-2.)
If OK, do Step 2.
b. Replace fuel injector(s).
Step 2.
Fuel injection pump timing incorrect.
a. Check fuel injection pump timing. (Refer to
b. Correct fuel injection pump timing.
Step 3.
Low compression on one or more cylinders.
a. Perform compression check to identify cause (piston
rings, head gasket or valves). (Use STE/ICE, VTM
test No. 14.) If OK, do Step 4.
b. Repair engine as required.
Step 4.
Camshaft timing incorrect.
a. Check gear train timing. (Refer to page 4-41.)
If OK, do Step 5.
b. Correct gear train timing.
Step 5.
Damaged camshaft, tappets or push rods.
a. Inspect camshaft, tappets and push rods.
b. Replace camshaft, tappets and push rods.
(Refer to page 4-41.)
3-15
