Dodge RAM TRUCK 1500 1995 Service Manual page 859

B R
ENGINES 9 • 15
SERVICE
DIAGNOSIS—DIESEL—PERFORMANCE—CONT.
CONDITION POSSIBLE CAUSES
CORRECTION
LOW POWER CONT.
8. High fuel temperature,
9. Poor quality fuel or fuel
contaminated with gasoline.
10. Air leak between the
turbocharger and the intake
manifold.
11. Exhaust leak at the manifold or
turbocharger.
12. Improperly operating
turbocharger.
13. Wastegate operation.
14. Valve not operating.
15. Worn or improperly operating
injectors.
16. Incorrect injection pump timing.
17. Improperly operating injection
pump.
8. Verify that fuel heater is off when engine
is warm. Check for restricted fuel drain
tube. Repair/replace as needed.
9. Verify by operating from a temporary
tank with good fuel. Check for presence
of gasoline. Replace fuel/water
separator filter.
10. Check/correct leaks in hoses, gaskets,
charge air cooler and around mounting
capscrews or through holes in the
manifold cover.
11. Check/correct leaks in the manifold or
turbocharger gaskets. If manifold is
cracked, replace manifold.
12. Inspect/replace turbocharger.
13. Check waste gate operation.
14. Check for bent push rod, replace if
necessary.
15. Check/replace injectors.
16. Verify injection pump timing (see Group
14, Fuel System).
17. Repair or replace injection pump.
EXCESSIVE EXHAUST
SMOKE
1 . Engine running too cold (white
smoke).
2. Improper starting procedure
(white smoke).
3. Fuel supply inadequate.
4. Injection pump timing.
5. Inadequate intake air.
6. Air leak between turbocharger
and intake manifold.
7. Exhaust leak at the manifold or
turbocharger.
8. Improperly operating
turbocharger,
9. Improperly operating injectors.
1. Refer to troubleshooting for coolant
temperature below normal (refer to
Group 7, Cooling System). Inspect
intake manifold heater system for
proper operation.
2. Use proper starting procedures.
3. Check fuel supply pressure and inlet
restriction.
4. Check and time pump (refer to Group
14, Fuel System).
5. Inspect/change air filter. Look for other
restriction. Check charge air cooler for
obstructions.
6. Check/correct leaks in the air crossover
tube, hoses, gaskets, mounting
capscrews or through holes in the
manifold cover.
7. Check/correct leaks in the manifold or
turbocharger gaskets. If cracked,
replace manifold.
8. Inspect/replace turbocharger.
9. Check and replace inoperative injectors.
J9509-149