What is 'detonation' or 'knock' in a gasoline engine, and why is it harmful?
-
A
Uncontrolled spontaneous ignition of the fuel-air mixture that causes damaging pressure spikes
-
B
Normal combustion noise amplified by a resonant exhaust system
-
C
Fuel injector cavitation caused by low fuel pressure
-
D
Valve train noise from worn cam followers