Insufficient Water Flow From Belt Driven Seawater Pump - Mercury MerCruiser D2.8L D-Tronic Service Manual

SERVICE MANUAL NUMBER 22

Insufficient Water Flow From Belt Driven Seawater Pump

1. Drive belt
2. Seawater shut off valve partially or
fully closed
3. Clogged or improperly installed sea
strainer
4. Loose hose connections between
seawater pickup and seawater pump inlet
5. Seawater inlet hose kinked or plugged
6. Seawater pickup plugged
7. Obstruction on boat bottom causing
water turbulence
8. Faulty seawater pump
90-860074--1 FEBRUARY 2002
Cause Special Information
1. Loose, worn or broken
4. Pump will draw in air, pump may fail to
prime or will force air bubbles into cooling
system
7. Obstruction will be in front of seawater
pickup, causing air bubbles to be forced
into cooling system
TROUBLESHOOTING
Page 1C-33