Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 14, Problem 2TF
True or False? Oil pressure is determined by whether the pump is a gear type or rotor type and by oil clearances, the pumps pressure regulator valve, and oil viscosity.
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True or False? Oil pressure is determined bywhether the pump is a gear type or rotor typeand by oil clearances, the pump’s pressure regulator valve, and oil viscosity.
1-While refilling an 8-quart (7.57 L) system with coolant: Technician A initially puts in 4 quarts (3.78 L) of straight coolant and tops it off with water. Technician B fills the system with the correct mixture, tightens the radiator cap, and then checks for leaks. Who is correct?
2-While checking for conditions that might cause coolant electrolysis: Technician A places the positive lead of a voltmeter into the coolant and connects the negative lead to a ground. Technician B checks for the presence of voltage in the coolant with the ignition off. Who is correct?
3-Technician A says that if the PCV valve or connecting hoses become clogged, excessive pressure will develop in the crankcase and can cause oil leaks. Technician B says that if the PCV valve or connecting hoses become clogged, oil may be pushed into the air cleaner or cause it to be drawn into the intake manifold. Who is correct?
4-While bleeding air from a cooling system: Technician A loosens a heater hose at its highest…
Initially, the gas pressure is greater than the outside atmospheric pressure. When valve 1 is opened, while valve 2 remains closed, the fluid level h1 ______.
Question 13 options:
stays constant
increases
decreases
Chapter 14 Solutions
Automotive Technology
Ch. 14 - What is the most efficient way to increase a...Ch. 14 - Explain why a pressure relief valve is needed in...Ch. 14 - List five problems that can be caused by engine...Ch. 14 - Describe the procedure for using air bleed valves...Ch. 14 - Describe the simple test used to determine whether...Ch. 14 - True or False? The presence of air in the cooling...Ch. 14 - True or False? Oil pressure is determined by...Ch. 14 - True or False? To eliminate the drain of engine...Ch. 14 - Which of the following is a function of the...Ch. 14 - For every pound of pressure put on engine coolant,...
Ch. 14 - Which is not a typical method of driving the water...Ch. 14 - Which of the following is not an effective way to...Ch. 14 - Cooling system hoses should be replaced when they...Ch. 14 - Which of the following is not a true statement...Ch. 14 - An engine overheats in traffic but is fine when...Ch. 14 - Technician A says that excessive engine oil...Ch. 14 - While checking for conditions that might cause...Ch. 14 - When discussing oil consumption: Technician A says...Ch. 14 - Technician A says that if the PCV valve or...Ch. 14 - While bleeding air from a cooling system:...Ch. 14 - While diagnosing an engine that overheats after...Ch. 14 - While performing a cooling system service on a...Ch. 14 - While discussing the causes of extreme engine...Ch. 14 - While diagnosing the cause of air bubbles in the...
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- Briefly describe a combination-dependent leak.arrow_forwardInitially, the gas pressure is less than the outside atmospheric pressure. When valve 1 is opened, while valve 2 remains closed, the fluid level h1 ______. Question 10 options: decreases stays constant increasesarrow_forwardIdentify and discuss the function of each part. Turbine Fuel Flow Meters Viscous-flow air meterarrow_forward
- A one-pipe system may be used when the oil tank is higher or lower than the oil pump. True or false.arrow_forwardExplain why a pressure relief valve is needed in an automotive oil pump.arrow_forwardWhich of the following situations will make a pump noisy? Select all that apply. Excessive oil viscosity Misalignment of pump and drive unit Dirty inlet strainer Chattering relief valvearrow_forward
- A vehicle comes in with no coolant and a core plug popped out of the engine block. Technician A states that the water pump is likely to be overpressurizing the system. Technician B states that the coolant may not have a low enough freezing point. Who is correct? Select one: a. Technician A only b. Technician B only c. Both Technicians A andB d. Neither Technician A nor Barrow_forwardFor a hydraulic power unit, this part protects the pump from taking in any harmful particles that may be in the reservoir a. liquid level gauge b. filler/breather c. pressure gauge d. suction strainerarrow_forward2. How does fluid flow to the reservoir when the directional control valve is in the center position? dings between Gauge 2 and Gauge 3arrow_forward
- All of the following are true statements about flushing an A/C system after a compressor failure, except The condenser must be flushed and the receiver/ dryer replaced. Filter screens are sometimes located in the suction side of the compressor and in the receiver/dryer. These screens confine foreign material to the compressor, condenser, receiver/dryer, and connecting hoses. Use only CFCs for flushing. After the system has been flushed, be sure to oil all components that require it. Some manufacturers recommend replacing the clogged components and installing a liquid line (inline) filter just ahead of the expansion valve or orifice tube instead of flushing the system.arrow_forwardThe total pressure rise in a centrifugal compressor is due to impeller and diffuser action Select one: True Falsearrow_forwardCoolant hoses are being discussed. Technician A states that many manufacturers recommend coolant hose replacement on a maintenance schedule. Technician B states that coolant hoses can fail prematurely due to contamination by oil. Who is correct? Select one: a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor Barrow_forward
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