The most obvious symptom of a faulty hydraulic lifter is the noise it creates in your car's engine. Finally, this ceamic quick change sanding disc is affixed with the vesatile, plastic, Type (Type III) male oll-on, oll-off attachment system compaable to (and compatible with) 3M oloc™ quick twist-on, twist-off ▶️ It is constructed of durable steel material to ensure a long lasting life, designed for maintenance free performance ▶️ These hydraulic lifters are compatible with Ranger 1986-1992, Bronco ll 1986-1990, fits 2.9L engines only Alternator 23621 12V-75A Fts Ford Ranger, Bronco 2.9L; F-150/250... 12pcs Hydaulic Valve Liftes Lash Adjustes Compatible With Ford Ranger Bronco Ii 2 9l 8692 2685181519 You can usually distinguish the faulty lifter by the distinct sound. Trick Flow Mustang Hydraulic Lash Adjusters (96-04) 4.6 TFS-21400008-16 ▶️ Made to meet OEM specifications, direct replacement for factory part. The tapping will be quick in rhythm and may occur when the vehicle is cold or hot, depending on what the problem with the hydraulic lifter is. The lifter may be having problems with a sticking check valve, dirt, wear or other problems. Instead of a knock or ping, a faulty hydraulic lifter will usually make a sound more reminiscent of a tapping sound.