Engine valves are mechanical components used in internal combustion engines to allow or restrict the flow of fluid or gas to and from the combustion chambers or cylinders during engine operation.
There are different types of engine valves as follows:
Poppet valve.
Sleeve valve.
Rotary valve.
Reed valve.
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The most common failure of valves is bending or breaking as a result of contact with the pistons. The valves contacting the top of a piston is due to incorrect engine synchronization caused by timing chain/belt breakage and incorrect fitting of new belts and chains.
A valve is composed of two major sections, the valve head and valve stem. The head of the valve is what allows air into and out of the cylinder. The stem is what gets pressed on by the rest of the valve train. At the end of the stem are grooves that keepers will fit into to hold the valve in place.
Amazing Process of Engine Valves Production | How Engine Valve is Made in Local Factory
The symptoms of bad valves include:
Cold Engine. A cold engine test will give you a good idea if your valve seal is faulty. ...
Off-Throttle Braking. Engine braking involves employing different means to slow down your car asides from the external braking.
Idling.
Excessive Oil Consumption.
Excessive Smoke.
Loss of Engine Power.
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