I have a Mitsubishi galant 2003 and the hydraulic lifters are tapping. It comes and goes. Should these be replaced?
Have the lifters adjusted.
hydraulic lifter? Rocker arm?
Stuck hydraulic lifter.
A tapping noise is generally the result of a bad hydraulic lifter, plugged oil passage to the lifter, or bad tappets. Sometimes just changing to lower viscosity high detergent oil will cure it. Or "Any automotive oil additive with the word MIRACLE in it".
Tapping valves is a noise made by too much clearance between the valve lifter and the valve. Modern engines have hydraulic lifters. If you have too little oil pressure or run the engine low on oil, the lifters will make noise. The lifter can also wear out.
Take a pushrod and push down on the plunger in the lifter. A hydraulic lifter is spring loaded.
Yes, a hydraulic valve lifter treatment can be effective for reducing or eliminating a slight tapping noise in an engine. These treatments are designed to clean and lubricate the lifters, helping to restore proper function and reduce noise caused by wear, sludge, or oil breakdown. However, if the tapping persists after treatment, it may indicate a more serious issue that requires further diagnosis and repair. Always consult your vehicle's manual or a professional mechanic before using such treatments.
It's a rocker arm tapping at valve stem. Hydraulic lifters (hydraulic rocker mounts) are the common reason for the ticking. If it doesn't go away when the engine heats up, consider replacing the lifter where the ticking comes from.
It depends on what's tapping. You may have a bad lifter or a valve problem.
hydraulic lifter non roller
try checking the lifter(s)
sounds like your oil is wrong viscocity and causes the hydraulic lifters to tap until oil thins enuff to work the lifters. if changing oil doesnt help you have a worn lifter
You could take off a rocker and try to push down on the pushrod. You'd be able to feel the spring in a hydraulic lifter, but not on a solid lifter.