Vanagon EuroVan
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (October 2007, week 4)Back to main VANAGON pageJoin or leave VANAGON (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Wed, 24 Oct 2007 18:50:11 -0700
Reply-To:     Jake de Villiers <crescentbeachguitar@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jake de Villiers <crescentbeachguitar@GMAIL.COM>
Subject:      Re: Manifold measuring - is this right?
Comments: To: Mike Rocket J Squirrel Elliott <camping.elliott@gmail.com>
In-Reply-To:  <471FE4A4.4020501@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Well, you can read it for different situations, but idle is where you need to be if you're looking for leaks.

The throttle plate is closed, so the vacuum is pulling harder at any gaps.

On 10/24/07, Mike Rocket J Squirrel Elliott <camping.elliott@gmail.com> wrote: > > Should the engine be idling, or what, when measuring vacuum? Could be > doing this wrong. > -- > > Mike "Rocket J Squirrel" Elliott > 71 Type 2: the Wonderbus > 84 Westfalia: Mellow Yellow ("The Electrical Banana") > 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano > KG6RCR > > On 10/24/2007 4:34 PM Mark Drillock wrote: > > > I would use the vacuum line to the fuel pressure regulator. > > > > Mark > > > > Mike "Rocket J Squirrel" Elliott wrote: > > > >> Hi, I'm looking for leaks in the intake manifold. Bentley's doesn't > give > >> a procedure for checking intake manifold vacuum so I'm winging it. I > let > >> the engine warm up so that aux air regulator thing is closed, and then > I > >> pulled one of the hoses going to the vacuum unit on the dizzie and > >> connected it to my fine Harbor Freight vacuum gauge. > >> > >> This is a 1.9L engine and the hose I'm using is the hose labeled "2" on > >> the left hand photo on page 24.25 in Bentleys.I don't know how > >> appropriate this hose is, but it has fewer bits connected to it than > the > >> other one. There's also a hose going to the fuel pressure regulator, > >> maybe it's a better choice? > >> > >> ANYWAYS, when the hose is disconnected from the vacuum unit, the idle > >> hunts up and down. The vacuum gauge shows around 18psi -- depending on > >> engine rpms. I can open the throttle and the vacuum might drop to > 10psi, > >> then climb back up . . . I really have no idea how one goes about > >> measuring vacuum. > >> > >> -- > >> > >> Mike "Rocket J Squirrel" Elliott > >> 71 Type 2: the Wonderbus > >> 84 Westfalia: Mellow Yellow ("The Electrical Banana") > >> 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano > >> KG6RCR > >> > > >

-- Jake 1984 Vanagon GL 1986 Westy Weekender "Dixie" www.crescentbeachguitar.com http://subyjake.googlepages.com/


Back to: Top of message | Previous page | Main VANAGON page

Please note - During the past 17 years of operation, several gigabytes of Vanagon mail messages have been archived. Searching the entire collection will take up to five minutes to complete. Please be patient!


Return to the archives @ gerry.vanagon.com


The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.

Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.