What are the symptoms of a faulty hydraulic valve lifter?
1 Answers
The symptoms of a faulty hydraulic valve lifter are: When the engine is idling, a clicking sound can be heard from the middle of the engine, on the side of the hydraulic valve lifter. The sound pattern is irregular, and when the engine speed is increased, the noise diminishes or becomes erratic, disappearing at high speeds. The causes of abnormal noise from the hydraulic lifter include: 1. Worn plunger; 2. Leaking valve; 3. Insufficient oil pressure supplied to the lifter; 4. Blockage of oil passages due to contamination between the plunger and the lifter body. The solutions for hydraulic lifter noise are: 1. Replace severely worn or leaking components; 2. Check the oil level, and if it is too low, add oil to the standard level.