Chapter 4
Fuel must be atomized in the engine for the purpose of __________
What is Combustion
Name the 4 strokes in order
What is Intake, Compression, Power, and Exhaust
Normal Fuel to air mixture is______ to _____
What is 14 to 1
What does API and SAE stand for
What is american petroleum institute and society of automotive engineers
Small Gas Engines Generally use _______ octane of fuel (High, Mid range, Low)
What is High
Explain why a 4 stroke is cooler than a 2 stroke
What is less power strokes, better lube and better combustion rates.
Air pressure is highest where in the carburetor?
What is venturi
What is the purpose of additives to oil? Name two types?
What is _____________ and ________ (so many)
The cylinder block is generally made of __________ or________ or ______ (any order)
What is Steel, Aluminum and Cast Iron
Time during both valves are open is known as?
What is Valve Overlap
Name three basic types of carbs
What is up, down and natural drafts
Oil type such as 10w-30 refers to its?
What is service Classification
When are Cylinder Sleeves used?
What is when you have an aluminium engine
When does the spark plug fire? (Piston Position)
What is just before top dead center
Richest air-fuel mix happens when?
What is at fuel choke
Oil Filters should be or should not be changed when changing oil
What is should be
Which is larger? Crank shaft or Cam shaft
What is Crank Shaft
What is an advantage of a 2 stroke over a 4 stroke
What is _________ (determined by class)
The newest air filter type to small engines is______________________
What is flat pleated paper cartridge filter
What type of oil system uses a crank case?
What is constant level system