Engine Components and Mechanics

Front

Main caps are not interchangeable and must be returned to the same bearing bores from which they were removed. True or False?

Back

True

Front

Bearing spread promotes better heat transfer and prevents the bearing from spinning in the bore. True or False?

Back

False

Front

The top piston ring is positioned as high as possible on the piston to increase piston slap, help ring durability, and lower emissions.

Back

False

Front

The crankshaft is pushed forward in the engine by pressure in the torque converter or by the release spring pressure of the clutch. Forward and backward movement is called ____.

Back

End Thrust

Front

While discussing vibration dampers, Technician A says that four-cylinder engines usually have a pulley and a damper. Technician B says that four-cylinder engines usually have only a pulley and do not use a damper. Who is correct?

Back

Technician B

Front

While discussing bearing undersizes, Technician A says that undersized bearings are used when a crankshaft is reground. Technician B says that they are used on some new engines to compensate for errors in production. Who is correct?

Back

Both

Front

The part that will MOST-Likely be used to prevent the piston pin from sliding out and damaging the cylinder wall is the: Wrist Pin, Lock Ring, Compression Ring, Piston Ring

Back

Lock Ring

Front

An imbalance of 1/4 ounce (7 grams, or about one sheet of paper) at a 4" radius on a rotating part will MOST-Likely create forces of:

Back

7 lb. at 2,000 rpm

Front

Which of the following is LEAST-Likely true?
Options: An engine that uses a single drop of oil with every power stroke would use 1 quart of oil every 2 miles.
Oil consumption decreases with engine speed.
Actual oil consumption per power stroke in an average engine is from 1/1000 to 2/1000 of a drop.
Engine intake manifold vacuum during deceleration increases with compression ratio.

Back

Oil consumption decreases with engine speed.

Front

____ is where the measurement across the parting face is slightly larger than the diameter of the bearing bore.

Back

Bearing Spread