Mercury MerCruiser MCM 454 Mag MPI Service Manual page 228

454 CID (7.4L) / 502 CID (8.2L)
NOTE: Engine failures, which result from the foregoing conditions, are beyond the control
of MerCruiser; therefore, no warranty will apply to failures which occur under these condi-
tions.
Detonation Damage
Combustion Description
Index
Page 3A-24
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a
c
a - Spark Occurs
b - Combustion Begins
c - Combustion Continues
d - Detonation Occurs
SERVICE MANUAL NUMBER 23
b
d
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