Dodge RAM TRUCK 1500 1995 Service Manual page 856

9 -12 ENGINES
Bit
SERVICE DIAGNOSIS—DIESElr-PERFORMANCE-CONr.
CONDITION POSSIBLE CAUSES
CORRECTION
ENGINE HARD TO START,
OR WILL NOT S T A R T -
SMOKE FROM EXHAUST
1. Incorrect starting procedure.
2. Cranking speed too slow.
3. Intake heater system not
working.
4. Insufficient intake air.
5. Air in fuel system or the fuel
supply is inadequate.
6. Fuel transfer (lift) pump.
7. Injection pump throttle linkage
loose or damaged.
8. Contaminated fuel.
9. Fuel screen plugged.
10. One or more injectors worn or
not operating properly.
11. Worn or inoperative injection
pump.
12. Injection pump out of time.
13. Valves incorrectly adjusted.
14. Engine compression low.
1. The fuel shutoff solenoid control must
• be in the run position. Ensure proper
procedure is being used.
2. A. Verify that the transmission is not
engaged.
B. Check the battery, starting motor and
look for loose or corroded wiring
connections.
C. Rotate the engine with barring tool
(Snap-on Tool SP371, MTE No.
3377462, or equivalent) to check for
external rotational resistance.
3. Verify system is working. Repair/replace
inoperative parts.
4. Inspect or replace filter and check for
obstructions to the air supply tube.
5. Check the flow through the filter and
bleed the system. Locate and eliminate
the air source.
6. Measure transfer pump outlet pressure.
If needed, repair or replace pump.
7. Visually check the linkage.
Adjust/replace linkage.
8. Verify by operating the engine with
clean fuel from a temporary tank. Check
for presence of gasoline. Drain and
flush fuel supply tank. Replace
fuel/water separator filter.
9. Check fuel screen.
10. Check/replace improperly operating
injectors.
11. Visually check fuel delivery with an
externally connected injector to one of
the pump outlets. Repair or replace the
. pump if fuel is not being delivered.
12. Check/Time the pump (refer to Group
14, Fuel System).
13. Adjust valves.
14. Check compression to identify the
problem.
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