A.overloading the engine
B.low exhaust valve lift
C.excessive cylinder cooling
D.insufficient mechanical clearance
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A.exhaust manifold
B.valve bridge
C.pressure of the fresh air charge
D.valve adjusting gear
A.excessive compression pressure
B.air in the fuel lines
C.high fuel pressure
D.excessive load
A.reduce lube oil temperature
B.raise exhaust temperature reduce
C.excessive heating of engine room
D.reduce load on cooling water pump
A.gap
B.side
C.back
D.radial
A.low exhaust back pressure
B.high lube oil temperature
C.insufficient cranking speed
D.excessive fuel atomization
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