engine repair 12/8/2022

Overhead cam engines timing chains may use ______tensioners

• Mechanical

• Spring

• Hydraulic

• All of the above

Timing belt service intervals are critical on many engines because

• timing affects idle quality

• loose belts may damage the water pump

• valve damage may occur if the belt fails

• Both A and C

An engine emits blue smoke for a few seconds when starting cold; the MOST likely cause is

• Fuel system is too lean

• A coolant leak to the cylinder

• Worn valve seals

• Worn piston rings

What is the primary advantage of round-toothed timing belts when compared to square-toothed timing belts?

• Less expensive

• Higher torque capacity

• Shorter service intervals

• Quieter operation

When replacing a cylinder head gasket, which type of head bolts should allows be replaced?

• torque to yield

• Grade 5

• only the failed ones

• those showing fatigue

A plastigage is used to determine

• piston clearance

• main and rod bearing clearance

• valve spring clearance

• crankshaft end play

What is a micrometer used for?

• To measure wheel base

• To check tire pressure

• To determine temperature

• Precision measurements

Which of the following is not part of a connecting rod

• I-beam

• Lobe

• cap

• bushing

If an engine noise can be reduced or eliminated by shorting out an individual cylinder, the most likely cause is

• Worn timing gears

• A cracked flex plate

• Worn cam lobe or follower

• Worn connecting rod bearing

Excessive tread wear on both tread shoulders is probably caused by

• over inflation

• under inflation

• out of balance

• incorrect camber