Date: Wed, 12 Jul 2006 10:28:28 -0700
Reply-To: John Lane <westy_cruisin@YAHOO.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: John Lane <westy_cruisin@YAHOO.COM>
Subject: Re: Loud metallic knock from engine??????
In-Reply-To: <7.0.1.0.0.20060712185659.01b79e00@zorck.dk>
Content-Type: text/plain; charset=us-ascii
I don't think you can remove the lifter without destroying the push rod tube, hence the collapsible one, this way you don't have to remove the head. To remove the lifter, you have to remove the push rod. As for the gasket, mine came off okay...but I use RTV to seal just in case. The key is to 'push' on the rocker arm to see if the lifter has collapsed.
John
----- Original Message ----
From: Jens Jakob Andersen <jayjay@ZORCK.DK>
To: vanagon@GERRY.VANAGON.COM
Sent: Wednesday, July 12, 2006 11:59:03 AM
Subject: Re: Loud metallic knock from engine??????
Hi John
Sound like I'll try to take it for a spin.
The sound didnt go away after 5 minutes of idle, and the engine
sputters a bit, like it has lost some power.
I can replace the hy-lifter without pulling more than the pushrod
tube, valve train, pop new hy-lifter in, put incollapsible
pushrodtube, replace valvetrain?
Sounds good.
I could pull the rockecover, but I havent got a new gasket - willthe
old one break when I pull the valvecover?
/JJ
At 18:54 12-07-2006, John Lane wrote:
>Well, mine sounded pretty loud.....louder than what I thought a
>lifter should....if it's coming from the head, I would think it's in
>the valve train. You can easily pop the cover to see if a spring has
>broken. As a precaution I replaced my lifter, easy enough job....got
>all I needed at Bus Depot. The collapsible push rid tube worked
>wonders and no leaks. What I found is if I don't run her every other
>day, she can make the noise and sometimes takes a while to go away.
>The Restore works wonders. Even with a broken spring there would be
>no 'tension' on the valve train and it might not make any noise at
>all. I would pop the cover, wiggle the rocker arms...pushing in on
>the valve...if it pushes in....it's the lifter. There should be no
>play except for the tolerance between the rocker and the push rod. I
>replaced my lifter and the problem came back only once. My guess is
>the hydraulic lock is lost, but after running for a bit...the lifter
>refills and all is well again.
>
>----- Original Message ----
>From: Jens Jakob Andersen <jayjay@ZORCK.DK>
>To: vanagon@GERRY.VANAGON.COM
>Sent: Wednesday, July 12, 2006 11:44:14 AM
>Subject: Re: Loud metallic knock from engine??????
>
>Hi John
>
>It doesnt sound like the normal valve-clatter.
>
>It sounds likesomeone tapping onthe head with a spanner.
>
>I listened with the extensionset from the socketkeys, and it comes
>from the rear exhaustvalvearea, righthandside.
>
>Either it is a valve that hangs (broken valvespring?) I guess, or a lifter.
>
>Any ideas on diagnose?
>
>/JJ
>At 18:22 12-07-2006, John Lane wrote:
> >Both mine and a friends Westy had a 'knock'...if it sounds like a
> >lifter, change the oil filter to a VW one and pour a can of Restore
> >in....works for us.
> >
> >----- Original Message ----
> >From: Jens Jakob Andersen <jayjay@ZORCK.DK>
> >To: vanagon@GERRY.VANAGON.COM
> >Sent: Wednesday, July 12, 2006 11:09:19 AM
> >Subject: Loud metallic knock from engine??????
> >
> >Hi,
> >
> >Now I got the van started.
> >
> >And I have a loud metallic knock fromthe engine, righthand side.
> >
> >Sound to me like a stuck hydraulic lifter, or a stuck valve..............
> >
> >Any good suggestions on a quick diagnosis and fix?
> >
> >It is not just the normal valve clatter when cold - it is a
> >distingtive metallic KNOCK KNOCK KNOCK.
> >
> >SIGH!!!!!!!!!!
> >
> >Jens Jakob
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