Timing belt Timing belt is a "toothed" belt that drives an overhead camshaft or camshafts (and in some vehicles a water pump).
Timing belt tensioner Timing belt tensioner is a spring-loaded idler wheel that automatically keeps the timing belt under enough tension to prevent the timing belt
Ignition timing Ignition timing is the process of setting the time that a spark will occur in the combustion chamber (during the power stroke) relative to piston
Definition
[ p. pr. & vb. n.]