Mercury MerCruiser D2.8L D-Tronic Service Manual page 652

EDI DIAGNOSIS
Troubleshooting Charts (Continued)
CONDITION
LOW POWER
(continued)
Page 5E-84
POSSIBLE CAUSES
1. Air leak between the
turbocharger and the
intercooler.
2. Exhaust leak at the manifold
or turbocharger.
3. Improperly operating
turbocharger.
4. Wastegate operation.
5. Valve not operating
6. Worn or improperly operating
injectors.
7. Incorrect injection pump
timing.
8. Improperly operating
injection pump.
SERVICE MANUAL NUMBER 22
CORRECTION
1. Check/correct leaks in
hoses, gaskets, intercooler
and around mounting
capscrews or through holes
in the cooler end covers.
2. Check/correct leaks in the
manifold or turbocharger
gaskets. If manifold is
cracked, replace manifold.
3. Inspect/replace turbocharger.
4. Check wastegate operation.
5. Check for bent push
rod,faulty hydraulic lifter,
replace if necessary.
6. Check/replace injectors.
7. Scan/Verify injection pump
timing.
8. Repair or replace injection
pump.
90-860074--1 FEBRUARY 2002