Hello, I'm Hüseyin Haybat. Are you in trouble with strange noises from your car's engine? It may be a lifter sound or a valve pusher sound, also called a goblet sound. When you press the accelerator pedal, when the vehicle gets on the load, it sounds like a sewing machine sound, and sometimes it sounds like a creaking sound. In this video, as a result of the determination we made as a result of the Grand Cherokee 2.7 crd model vehicle coming to our service with the complaint of lifter sound, we uploaded this video to show how we decided to change the valve tappets and how we did this operation.
What is Lifter? What does it do? How does it work?
This part, called Lifter, is a simple hydraulic pusher. The task of the lift is to adjust the opening and closing time of the valves according to the oil pressure. When the oil pressure rises, that is, when the engine speed increases, the oil fills into this part with high pressure, the part expands, the lifter closes the gap between the camshaft and the cock and this causes the valve to open earlier and close later. Meanwhile, the systems vary depending on the vehicle, if there is a cock, it pushes the cock a little. If it is cup-shaped, it is directly related to the eccentric.
The lifter, which has a diaphragm or similar structure, starts to sound when it cannot hold the oil pressure or when enough oil is not filled and pressure does not occur.
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Негізгі бет Causes of lifter, valve pusher (goblet sound) failure and solution from engine
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