Table 8. Engine System (Unit) Troubleshooting Procedures - Continued.

TM 10-3930-660-24-1

TROUBLESHOOTING PROCEDURES - CONTINUED

0006 00

Table 8. Engine System (Unit) Troubleshooting Procedures - Continued.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

3. Check for obstructions to

a. Remove and clean air

3. Engine Hard to Start or Will Not Start - Smoke

intake air.

cleaner intake cap. Clean

From Exhaust - Continued.

air inlet tube.

INTAKE CAP

AIR INLET TUBE

409-121

b. Service air cleaner

elements (TM 10-3930-

660-10).

4. Check for air in the fuel

Bleed the fuel system (WP 0034

system for inadequate fuel

or WP 0035 00), or fill fuel tank

supply.

as necessary (TM 10-3930-660-

10).

5. Check for contaminated fuel.

Obtain a sample (TM 10-3930-

660-10). Verify by operating the

engine with clean fuel from a

temporary supply tank. Drain

and flush the fuel supply tank.

1. If surging occurs at idle,

Adjust idle speed by adjusting

Engine Surges (Speed Change).

check if idle speed is set too

accelerator cable as necessary

low for accessories.

2. Check for high pressure fuel

Replace high pressure lines or

tank.

tighten fittings, injector sealing

washers or delivery valves (WP