The valve lifter increases the height of the valve to get it near the camshaft. It allows the vehicle to function correctly and prolongs the engine's service life.
Valve lifter conceptThe valve lifter also known as a hydraulic tappet is utilized often in an internal combustion engine that transforms rotating movement into linear motion. The tappet transforms the rotation of the camshaft into vertical movement so the intake/exhaust valve opens and closes. There are also different types of valve lifters like hydraulic lifters, and roller lifters. Hydraulic filters hold a small hydraulic piston that is filled with pressurized oil. While the roller tappet offers a great amount of power and a smoother engine.
Common issues with a faulty valve lifterA faulty valve lifter can cause the vehicle to create an uncommon noise in the engine and excessive tapping.