Callapsed lifters
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,007
Likes: 7,541
From: Poolville
One thing that people tend to forget is that when you manually pump up your lifters and install them and then adjust the front cylinder pushrod, it's actually pumping that lifter down and then you turn the motor over to adjust the rear cylinder then that front valve spring pressure is going to pump down the front lifters again. This is why it can take some time to pump them back up.. So when you know you are correct in your adjustment procedure and start the motor and get some noise, sometimes you just have to be patient till they pump up.. Unless it's really lose and loud. Then you might have to go back in and readjust.. I've had lifters take a 15 minute ride to quiet then down totally.. I always set preload from zero lash (top down) at TDC...
One thing that people tend to forget is that when you manually pump up your lifters and install them and then adjust the front cylinder pushrod, it's actually pumping that lifter down and then you turn the motor over to adjust the rear cylinder then that front valve spring pressure is going to pump down the front lifters again. This is why it can take some time to pump them back up.. So when you know you are correct in your adjustment procedure and start the motor and get some noise, sometimes you just have to be patient till they pump up.. Unless it's really lose and loud. Then you might have to go back in and readjust.. I've had lifters take a 15 minute ride to quiet then down totally.. I always set preload from zero lash (top down) at TDC...
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,007
Likes: 7,541
From: Poolville
Yeah those 2 lifters were real bad.. Going to the S&S is a good choice.. I only posted what I did because sometimes some people need to give it a little time.. it just the way it is.. But your 2 are beyond the point of no return.. I never had a plunger stick like that..
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Rui Frederico Basto
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Jul 27, 2012 05:31 AM
