There is power in every two full crankshaft revolution.

Indicates the load an engine can handle to generate a certain amount of power.

During Intake stroke the piston is ____________ and the intake valve is ___________.

What is the movement of the piston in the piston stroke?

What will happen if a spark plug is under-torque?

During the fourth stroke the piston movement is __________ and the exhaust valve is ________.

A series of parts that open and close the valves.

When checking plug gaps, the correct way is to use

The following are stationary parts, EXCEPT;

The lost compression and burning are due to not enough valve clearance.

The voltage requirement of a spark plug is indirectly proportionate to the gap size.

Modified engines with high compression require a modified spark plug.

Accurate tappet settings prolong engine life and aid performance.

Insufficient clearances are harmful to the valve mechanism.

When increasing gap size go more than plus .008’’.

Spark plug gap specifications are listed in inches or millimetres.

 Correct clearance is to quite engine operation.

Install spark plugs in a hot engine.

Too much clearance retards timing and shortens valve life.

The voltage requirement of a spark plug is indirectly proportionate to the gap size.