Engine Operates Poorly At High Rpm - Mercury MerCruiser D2.8L D-Tronic Service Manual

SERVICE MANUAL NUMBER 22

Engine Operates Poorly At High Rpm

1. Refer to Poor Boat Performance And /
Or Poor Maneuverability
2. Crankcase overfilled with oil
3. Malfunction of anti-siphon valve (if
equipped)
4. Plugged fuel tank vent
5. Low fuel supply
6. Clogged fuel filter
7. Low grade of fuel or water in the fuel
8. Obstructed or kinked fuel lines
9. Injectors not functioning properly
10. Engine overheating
11. Low compression
12. Restricted or plugged exhaust
13. Refer to SECTION 5 for complete
90-860074--1 FEBRUARY 2002
Cause
diagnostic procedures for EDI
Special Information
2. Check oil level with boat at rest in the
water
3. Restricting fuel supply
9. Refer to SECTION 5C and / or 5E for
EDI Diagnosis
10. Refer to Engine Overheats
11. Worn valves, rings, cylinders, etc.
TROUBLESHOOTING
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