EXCESSIVE BLACK OR GRAY EXHAUST SMOKE (ENGINE AT NORMAL OPERATING TEMPERATURE). (Cont) -726250165

TM 9-2320-364-34-1

Allow engine to cool before performing troubleshooting maintenance. If necessary use insulated pads

and gloves. Hot engine components will burn and cause injury to personnel.

Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical

circuits, a direct short may result. Damage to equipment, injury or death to personnel may occur.

DDEC MODE 11 TEST

(1) Connect DDR to DDL connector

MC13.

(2) Start engine (TM 9-2320-364-10).

(3) Select mode 11 to display pulse

widths on DDR.

(4) Compare pulse widths of all eight

injectors.

(a) If pulse widths are less than the

NO CUT OUT PW (pulse widths),

or different from cylinder to

cylinder, perform Steps (5) and (6)

below and replace injector

(Para 4-2).

(b) If pulse widths are equal to or

greater than the NO CUT OUT

PW (pulse widths), perform Steps

(5) and (6) below and go to Step 3

of this Fault.

(5) Turn OFF ENGINE switch.

(6) Disconnect DDR from DDL connector

MC13.

INJECTOR TIMING CHECK

Check injector timing.

(1) If injectors are out of time, time

injectors (Para 3-2).

(2) If injectors are in time, go to

Step 4 of this Fault.