TM 10-3930-641-20
TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE (CONT)
9. ENGINE MISFIRES OR RUNS ROUGH
Step 1. Inspect fuel level.
Add fuel. (See page 2-193.)
Step 2. Check exhaust for white smoke.
Use ether as required.
Step 3. Inspect fuel lines between fuel tank and fuel transfer pump for crimps, leaks, and bends.
Replace fuel lines. (See page 2-173.)
Step 4. Check fuel pressure.
Replace fuel filter (secondary). (See page 2-186.)
Clean primary fuel filter. (See page 2-183.)
10. ENGINE STALLS AT LOW RPM
Inspect fuel lines between fuel tank and fuel transfer pump for crimps, leaks, and bends.
Replace fuel lines. (See page 2-173.)
11. ENGINE WILL NOT CRANK WHEN IGNITION SWITCH IS IN START POSITION
Step 1. Inspect main disconnect switch.
Turn to ON position. (See TM 10-3930-641-10.)
Step 2. Inspect batteries.
Charge/replace. (See page 2-277.)
Step 3. Inspect starting motor for damage.
Replace. (See page 2-258.)
