Hydraulic Lifter Question
Thread Starter
Instructor
Joined: Mar 2002
Posts: 140
Likes: 1
From: east hampton ct
Hydraulic Lifter Question
I recently pull the lifters in my car due to excessive lifter noise. The lifters were from comp cam and appear to be Delphi or a copy. When I went to try to identify if there was a bad lifter by pushing down on the pushrod seat I was unable to move the seat in any of the 16 lifters. My new Delphi lifters can all be moved. What am I missing with the existing lifters and what is keeping them from moving. The motor is a 350. Any help is appreciated.
Le Mans Master
Joined: Nov 2008
Posts: 5,691
Likes: 12
From: columbus oh
I recently pull the lifters in my car due to excessive lifter noise. The lifters were from comp cam and appear to be Delphi or a copy. When I went to try to identify if there was a bad lifter by pushing down on the pushrod seat I was unable to move the seat in any of the 16 lifters. My new Delphi lifters can all be moved. What am I missing with the existing lifters and what is keeping them from moving. The motor is a 350. Any help is appreciated.
Thread Starter
Instructor
Joined: Mar 2002
Posts: 140
Likes: 1
From: east hampton ct
I was experiencing what I consider excessive lifter noise. When the motor was originally built there was minimal valve train noise. Over time it just got louder. The motor has about 6 or 7 K and is 3 years old. When the motor was cold there would be no noise then when it reached operating temperature I would start hearing a lifter and it was pretty loud. None of the lifters show any wear at the cam interface but I haven't put an indicator on the lobes yet.
