EDI DIAGNOSIS
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 5E-85
Troubleshooting Charts (Continued)
CONDITION POSSIBLE CAUSES CORRECTION
EXCESSIVE
EXHAUST
SMOKE
1. Engine operating 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.
10. Improperly operating or over
fueled injector pump.
11. Piston rings not sealing (blue
smoke).
1. Refer to troubleshooting for
coolant temperature below
normal (refer to Cooling
System). Inspect glow plugs
for proper operation.
2. Use proper starting
procedures.
3. Check fuel supply pressure
and inlet restriction.
4. Scan/Check pump timing.
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.
10. Repair or replace injection
pump.
11. Perform compression /
blow-by check. Correct as
required.
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