Ignition Systems

If the engine stops abruptly and refuses to start:

• it is out of gas

• the problem may be in the ignition system

• the spark plug is no good

• none of these are correct

A spark plug may not fire if:

• it is badly fouled with carbon

• the electrodes are too widely gapped

• none of these are correct

If the flywheel key is sheared:

• the timing may be out-of-phase

• replace it with a stronger key

• regap the pins to allow for flywheel shift

• none of these are correct

The breaker points are gapped correctly:

• if you assemble the flywheel with a zinc key

• if the distance is .020" when they are fully open

• when the volt-ohmmeter reads zero

• when the tester reads .24 MFD

A magnetic-coil-condenser tester is used to check the coil. The coil is good if:

• you get a mid-range reading and no arc showing in the "spark" window

• the tester reads between .18 to .24 MFD

• you get no reading and an arc showing in the spark window

• none of these are correct

Answer explanation

You should get a mid-range reading and an arc showing in the "spark" window

The magneto-coil-condenser tester is used to check condenser leakage. If the condenser leaks, the meter should:

• read between .18 to .24 MFD

• not show a light in the leakage window

• none of these are correct

Answer explanation

If the condenser leaks a light will show in the leakage window

If you forget to install the breaker plunger:

• the points will not operate

• the points will operate anyway but slower

• only the breaker arm will move

• the engine will run slow

Use a new spring when you assemble the points. The spring:

• opens the points

• sets the correct gap

• closes the points

• none of these are correct

A zinc key is used to line up the crankshaft and the flywheel. They must be correctly aligned because:

• the key drives the flywheel

• the alignment controls ignition timing

• the flywheel is balanced

• all of these are correct

The starter clutch is attached to the crankshaft:

• by means of a flywheel holder

• with a starter clutch wrench

• by torquing to 57 foot-pounds

• all of these are correct