Kia Rio: Description

Knocking is a phenomenon characterized by undesirable vibration and noise and can cause engine damage. Knock Sensor (KS) is installed on the cylinder block and senses engine knocking.

When knocking occurs, the vibration from the cylinder block is applied as pressure to the piezoelectric element. When a knock occurs, the sensor produces voltage signal. The ECM retards the ignition timing when knocking occurs. If the knocking disappears after retarding the ignition timing, the ECM will advance the ignition timing. This sequential control can improve engine power, torque and fuel economy.

Knock Sensor (KS)

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Specification

Item Specification Capacitance (pF) 950 ~ 1,350 Resistance (MΩ) 4.87 ...

See also:

Muffler: Components
1. Front muffler 2. Catalytic converter & Center muffler assembly 3. Main muffler 4. Gasket 5. Hanger ...

Fluid Service Adjustment Procedure
Oil level Check    A check of ATF level is not normally required during scheduled services. If an oil leak is ...

Components Location
1. Sub frame 2. Drive shaft 3. Lower arm 4. Strut assembly 5. Steering gearbox 6. Stabilizer bar ...