Podcast
Questions and Answers
What is the main purpose of a fast idle solenoid?
What is the main purpose of a fast idle solenoid?
- To increase engine speed when the engine is turned off
- To quickly close the throttle plates when the engine is turned off
- To keep the throttle plates open to avoid dieseling (correct)
- To adjust the idle speed of the engine
What is a common problem that the fast idle solenoid helps to address in newer emission-controlled vehicles?
What is a common problem that the fast idle solenoid helps to address in newer emission-controlled vehicles?
- Lower fuel octane ratings
- Slower idle speeds
- Low engine temperatures
- Leaner fuel mixtures and higher operating temperatures (correct)
How does the fast idle solenoid work to increase engine speed?
How does the fast idle solenoid work to increase engine speed?
- It adjusts the position of the solenoid plunger to hold the throttle plates open (correct)
- It closes the throttle plates when the engine is turned on
- It opens the throttle plates when the engine is turned off
- It increases the flow of fuel to the engine when the solenoid is activated
What is the purpose of the throttle return dashpot?
What is the purpose of the throttle return dashpot?
Which type of vehicle is the throttle return dashpot commonly used on?
Which type of vehicle is the throttle return dashpot commonly used on?
What would happen if a vehicle did not have a throttle return dashpot?
What would happen if a vehicle did not have a throttle return dashpot?
What component picks up heat from the exhaust without sending any actual exhaust fumes to the choke mechanism?
What component picks up heat from the exhaust without sending any actual exhaust fumes to the choke mechanism?
During warm-up, why does the engine need to run at a faster idle speed?
During warm-up, why does the engine need to run at a faster idle speed?
What component prevents the throttle plate from closing when the choke is closed?
What component prevents the throttle plate from closing when the choke is closed?
What is responsible for increasing the engine idle speed during cold engine operation?
What is responsible for increasing the engine idle speed during cold engine operation?
What device is used to admit air if the engine floods when cold?
What device is used to admit air if the engine floods when cold?
Which mechanism can be either mechanical- or vacuum-operated?
Which mechanism can be either mechanical- or vacuum-operated?
What happens when the driver presses down on the accelerator?
What happens when the driver presses down on the accelerator?
Which system provides extra fuel when changing from the idle system to the high-speed system?
Which system provides extra fuel when changing from the idle system to the high-speed system?
What would happen if there was no acceleration system in place?
What would happen if there was no acceleration system in place?
What is the purpose of the accelerator pump in the acceleration system?
What is the purpose of the accelerator pump in the acceleration system?
Which part of the acceleration system prevents a lean air-fuel mixture?
Which part of the acceleration system prevents a lean air-fuel mixture?
What action provides enough extra fuel to mix with additional air around the throttle plate?
What action provides enough extra fuel to mix with additional air around the throttle plate?
What is the purpose of the start spring in the all speed governor?
What is the purpose of the start spring in the all speed governor?
What happens when the adjusting lever is moved to the idle position after starting the engine?
What happens when the adjusting lever is moved to the idle position after starting the engine?
What happens when the adjusting lever is moved to the full load position?
What happens when the adjusting lever is moved to the full load position?
How does the governor regulate the maximum engine speed?
How does the governor regulate the maximum engine speed?
What is the role of the damper spring in the all speed governor?
What is the role of the damper spring in the all speed governor?
What happens to the spill ring when the engine speed exceeds the predetermined maximum?
What happens to the spill ring when the engine speed exceeds the predetermined maximum?
Where is the hydraulic injection-timing device located on the fuel pump?
Where is the hydraulic injection-timing device located on the fuel pump?
What is the main purpose of the governor in a VE type injection pump?
What is the main purpose of the governor in a VE type injection pump?
How does the timer piston move as engine rpm rises?
How does the timer piston move as engine rpm rises?
What component converts the lateral motion of the timer piston into rotational motion of the roller ring?
What component converts the lateral motion of the timer piston into rotational motion of the roller ring?
What are the two types of governor used in the VE type injection pump?
What are the two types of governor used in the VE type injection pump?
How does the timer spring affect the movement of the timer piston?
How does the timer spring affect the movement of the timer piston?
