Page 32 - REPOWER REFERENCE GUIDE (2020)
P. 32
Engine Failure Diagnosis
27651
Preignition damage
Read Engine Internals
Cylinder Head
A bad thermostat caused the overheat damage to the engine.
a - 5.7L deformed gasket
b - Cracked head
a
b
68058
A lack of water causes an overheat to the 5.7L engine which results in water ingestion and a cracked head.
a - Cracked head
a
68064
Page 3A-6 © 2019 Mercury Marine 90-8M0149179 eng NOVEMBER 2018

