Free Engine Info

Clutch Master Cylinder Rebuild

Category: Auto Tuning

clutch cylinder
If your clutch petal has ever lost pressure and the petal will not dis-engage the clutch, there is a leak. The leak may be air sucking in or fluid leaking out. First check the clutch fluid reserve, if it is low you will need to identify the leak. There should be a puddle of fluid at the leak. If a leaking line is not the culprit it may be the clutch master cylinder. If the clutch master cylinder or slave cylinder is faulty, there may be no loss of fluid. The clutch master cylinder is located on the firewall attached underneath the fluid reserve tank.

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Air Temp Sensor

Category: Auto Tuning

air temperature  sensor An air temperature sensor is used on fuel injected engines. The purpose of an air temperature sensor is to help the computer calculate air density. A change in temperature changes the resistance in the sensor. Simply stated, the higher the air temperature gets the less dense the air becomes. As the air becomes less dense the computer knows that it needs to lessen the fuel flow. If the fuel flow was not changed the engine would become rich, possibly losing power and consuming more fuel. The temp sender is generally located in the air inlet tube or the air box. The wire running to the sensor can be disconnected then the sensor can be unscrewed and replaced. Some aftermarket companies trick this sensor with a resistor (false temp reading) to make the engine run richer. If a engine has been tuned lean this trickery can show mild power gains.