On Sat, Mar 27, 2010 at 2:33 PM, Shawn Wright <vwdiesels@gmail.com> wrote:

> I've always assumed it's a combination of the proportioning valve and the
> much longer lines introducing more pressure loss. On a Jetta, you can adjust
> the prop. valve by hand while bleeding to test this theory, but I don't
> thing any Vanagons have load adjustable valves, do they?

Not that I know of.

I've only seen 2 Vanagon BPV's. ('81 and '85) Neither had an
adjustment. Oddly, P. 47.8 Bentley says "push lever on brake
pressure...." when bleeding. I recall a thread in archives about that.
AFAIK, no one here has mentioned having a lever on their BPV. Likely a
typo in Bentley.

Yah I should have posted my 2 questions in one post except one relates
to poss. trapped air, and the other is about rate of flow.

Thanks,

Neil.

--
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines