Blu Bug Posted September 13, 2014 Share Posted September 13, 2014 (edited) I just purchased a rebuilt short block and the shop I bought it from took my heads and had them gone through (to what extent I am not sure) and bolted them on to the block for me. I recently put the engine into my VW based baja bug. I am getting a noise that sounds like a collapsed or partial collapsed hla. The first time I took the valve covers and rocker arms off I found one completely collapsed adjsuter and two that were not pumped up all the way. I purchased three new adjusters from Subaru, bled them and put everything back together. Fired motor up and after ten seconds the noise was back. I took everything apart again and all of the adjuster were extremely firm. I took apart the rocker arm assemblies and cleaned everything and blew out the oil passages with air. After all was back together and running the noise came back. I just bought all new adjusters from RockAuto and put them in today. Started car up and after ten - fifteen seconds the noise came back. It does not go away when warm, gets quieter at high RPM, momentarily goes away with a quick blip of the throttle, but will get increasing loud if you slowly apply the throttle. Any ideas? Edited September 13, 2014 by Blu Bug Link to comment Share on other sites More sharing options...
Blu Bug Posted September 14, 2014 Author Share Posted September 14, 2014 Additional information: I got mixed up during the removal of the rocker arm assembly and did not follow the bolt removal sequence as outline in the manual I have. Could I have bent something? Link to comment Share on other sites More sharing options...
Blu Bug Posted September 14, 2014 Author Share Posted September 14, 2014 Update: After taking apart the rocker arm assembly and inspecting the adjusters I was convinced that this is not my problem. I bought a stethascope (sp) and found the noise was the loudest when probing the block just under the intake manifold. Link to comment Share on other sites More sharing options...
Fairtax4me Posted September 15, 2014 Share Posted September 15, 2014 Make sure it's not the timing tensioner flopping around. The new style one peice tensioners are finicky and fail if you look at them wrong. If you have the old style two peice tensioner, those have to be compressed VERY slowly or the seals blow out internally and cause it to bounce around. Link to comment Share on other sites More sharing options...
Blu Bug Posted September 16, 2014 Author Share Posted September 16, 2014 Is a failed tensioner an obvious thing at first glance or does it show up while the motor is running? Link to comment Share on other sites More sharing options...
Fairtax4me Posted September 16, 2014 Share Posted September 16, 2014 You probably won't be able to tell its bad when the engine is not running. With the engine running you'll see the tensioner bouncing around. You should only need to pull the drivers end timing cover and look in from the side with a flashlight to see if the tensioner is moving/ bouncing around. Link to comment Share on other sites More sharing options...
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