EETC - Equipment & Engine Training Council Fuel and Lubrication Systems Questions and Answers

Question 1

What is the primary principle that allows a carburetor's venturi to draw fuel from the float bowl into the intake airstream?

Accepted Answer

Bernoulli's Principle

Answer

Pascal's Law

Answer

The Coandă Effect

Answer

Archimedes' Principle

Question 2

In a multi-grade engine oil designation like "SAE 10W-30," what does the "W" stand for?

Accepted Answer

Winter

Answer

Weight

Answer

Water-resistant

Answer

Wear-protection

Question 3

An engine that uses a splash lubrication system is consistently operated on a steep incline, exceeding the manufacturer's recommended angle. Which type of engine failure is most likely to occur as a direct result?

Accepted Answer

Connecting rod bearing failure from lack of oil

Answer

Fuel starvation due to carburetor float angle

Answer

Overheating due to a blocked cooling fin

Answer

Ignition coil failure from excessive vibration

Question 4

A piece of equipment that was stored for several months with E10 gasoline in the tank now fails to start. The fuel lines appear swollen and soft, and the carburetor is clogged with a gel-like substance. Which of the following is the most likely cause of these issues?

Accepted Answer

Phase separation and water absorption by the ethanol

Answer

The fuel's octane rating being too low for the engine

Answer

Varnish buildup from non-ethanol gasoline

Answer

An incorrect two-stroke oil mixture in the fuel

Question 5

What is the primary function of the flyweights within a mechanical governor system on a small engine?

Accepted Answer

To sense changes in engine speed (RPM)

Answer

To advance the ignition timing as engine speed increases

Answer

To splash lubricate the internal engine components

Answer

To counterbalance the crankshaft for smoother operation

Question 6

A technician is servicing a commercial-grade V-twin engine and notes it is equipped with an oil filter, an oil pump, and drilled passages in the crankshaft. This combination of components indicates which type of lubrication system?

Accepted Answer

Pressure-fed lubrication

Answer

Splash lubrication

Answer

Wick-feed lubrication

Answer

Two-stroke premix lubrication