FreeAutoMechanic

Engine Cooling System

Ask Now!
 
 

Knowing How a car Engine Cooling System Works could save you money?

 
 
The most common reason for your vehicle to overheat is lack of or being low on coolant. If the engine is low on coolant (check the radiator and overflow tank) then you need to perform a pressure test on the cooling system to determine where the leak is coming from so that you can fix it.
 
 
Introduction - The Basics - Plumbing - Fluid - Water Pump - Engine - Radiator - Pressure Cap - Thermostat - Fan - Heating System
 
There are many coolant passages through out the engine to help keep it flowing.
 

Engine

The engine block and cylinder head have many passageways cast or machined in them to allow for fluid flow. These passageways direct the coolant to the most critical areas of the engine.
 
Engine Cylinder Walls
Note that the walls of the cylinder are quite thin, and that the engine block is mostly hollow.
 
 
 
Auto Repair Manuals
Technical Service Bulletins
Maintenance Procedures

Temperatures in the combustion chamber of the engine can reach 4,500 F (2,500 C), so cooling the area around the cylinders is critical. Areas around the exhaust valves are especially crucial, and almost all of the space inside the cylinder head around the valves that is not needed for structure is filled with coolant. If the engine goes without cooling for very long, it can seize. When this happens, the metal has actually gotten hot enough for the piston to weld itself to the cylinder. This usually means the complete destruction of the engine.

 
Coolan Passages
The engine also has large coolant passageways.
One interesting way to reduce the demands on the cooling system is to reduce the amount of heat that is transferred from the combustion chamber to the metal parts of the engine. Some engines do this by coating the inside of the top of the cylinder head with a thin layer of ceramic. Ceramic is a poor conductor of heat, so less heat is conducted through to the metal and more passes out of the exhaust.
 
Introduction - The Basics - Plumbing - Fluid - Water Pump - Engine - Radiator - Pressure Cap - Thermostat - Fan - Heating System
 
GET AN ONLINE REPAIR MANUAL FOR YOUR CAR - Get on-line access to drive belt routing, repair instructions, wiring diagrams, trouble code diagnostic charts and updated factory bulletins.
divider
 
Top Free Categories
Serpentine Belt Routing Diagrams
Car Owners Manuals
Auto Wiring Diagrams
Auto Repair Manuals
Auto Repair Estimates
Auto Repair Questions
Auto Insurance Quotes
Timing Belt Replacement
Printable Nut & Bolt Measuring Charts
by Manufacturer
  • Acura
  • Audi
  • BMW
  • Buick
  • Cadillac
  • Chevy
  • Chrysler
  • Datsun
  • Dodge
  • Ford
  • GEO
  • GMC
  • Honda
  • Hyundai
  • Infiniti
  • Isuzu
  • Jaguar
  • Jeep
  • Kia
  • Lexus
  • Lincoln
  • Mazda
  • Mercedes
  • Mercury
  • Mitsubishi
  • Nissan
  • Oldsmobile
  • Plymouth
  • Pontiac
  • SAAB
  • Saturn
  • Scion
  • Subaru
  • Suzuki
  • Toyota
  • VW
  •  
    Top Maintenance and Repair
    Air Conditioning Troubleshooting
    Brakes
    Check Engine Trouble Codes
    Engine
    Engine Sensors
    Electrical
    Maintenance
    No Start Diagnostics
    Engine Overheating Diagnostics
     
     
    Content © FreeAutoMechanic.com. 2006 - 2014 All Rights Reserved | Privacy Policy | Contact | Terms of Service | About