ENGINE & STERN DRIVE
DIAGNOSTIC CHART
Problem Possible Cause
Manifold vacuum leak
Stern Drive Groans Not enough lubricant on drive shaft or in
drive
Bad gimbal bearing due to water in
bellows
Poor engine alignment
Excessive Vibration Drive prop was grounded, bent, or
destroyed
Engine mounts loose / broken
Bad oil quality / type
Distributor cap / rotor corroded
Loose serpentine belt
Bad alignment
Water In Oil / Power Trim /
Power Steering Fluid
Could be any number of problems -
Contact your Regal dealer
Engine And Stern Drive Diagnostic Chart
8-4
Chapter 8
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