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Subscribe! - http://bit.ly/motorro Americans call these parts hydro valve lifters. In my opinion, it is a much more reasonable name than hydraulic compensators. Anyway, today we will talk about the reasons for their knocking and how to eliminate it. Timecodes: 00:00:00 - Introduction 00:01:58 - Knocking when cold 00:04:51 - Knocking when hot 00:06:39 - New hydraulic compensator is knocking 00:07:31 - How to detect a faulty hydraulic compensator 00:08:31 - Repair of hydraulic lifters