Water / Coolant On Top Pistons - Mercury MerCruiser D2.8L D-Tronic Service Manual

TROUBLESHOOTING

Water / Coolant On Top Pistons

1. Rain water running onto air cleaner
2. Backwash through the exhaust system
3. Improper engine or exhaust hose
installation
4. Cracked exhaust manifold
5. Improper manifold to elbow gasket
installation
6. Loose cylinder head bolts
7. Blown cylinder head gasket
8. Cracked and leaking intercooler
9. Porous or cracked casting
Page 1C-28
Cause
SERVICE MANUAL NUMBER 22
Special Information
1. Hatch cover
3. Refer to exhaust specifications
7. Check for warped cylinder head or
cylinder block
8. Defective O-rings or tubes
9. Check cylinder heads/valve bridge,
cylinder block, and intake manifold
90-860074--1 FEBRUARY 2002