How much have you done to clean the by treating the oil with a hydraulic
lifter cleaner/treatment.
I'd keep doing that for a while. Eventually it could straighten itself out.

If you want to replace lifters without removing the head/s .......means
you'd need to use a spring loaded pushrod tube wherever you replace a
lifter.
I have a set of those - but they leaked some. I don't trust them that much. 
Scott 

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Chris S.
Sent: Tuesday, April 22, 2008 2:21 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Lifters pumping down at speed

I seem to have the reverse of most lifter problems - my lifters pump down
when cruising at a steady 60 mph and higher, but pump back up after a few
miles off the highway.  One lifter in particular gets especially loud.
What's going on?  Do I just replace/adjust the lifters?

Chris S.

---------------------------------
Be a better friend, newshound, and know-it-all with Yahoo! Mobile.  Try it
now.

-- 
No virus found in this incoming message.
Checked by AVG. 
Version: 7.5.524 / Virus Database: 269.23.2/1389 - Release Date: 4/21/2008
8:34 AM