Vanagon EuroVan
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (July 2001, week 1)Back to main VANAGON pageJoin or leave VANAGON (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Tue, 3 Jul 2001 13:07:37 -0700
Reply-To:     Tobin Copley <tobin.copley@UBC.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Tobin Copley <tobin.copley@UBC.CA>
Subject:      Re: [DIESEL] RE: How the heck to prime oil pump? (Vanagon D)
Comments: To: Jay L Snyder <Jay.L.Snyder@usa.dupont.com>
In-Reply-To:  <85256A7E.00671AAE.00@CDCLN08.LVS.DUPONT.COM>
Content-Type: text/plain; charset="us-ascii" ; format="flowed"

At 2:46 PM -0400 7/3/01, Jay L Snyder wrote: >Did you lose prime because you had the sender out? Wouldn't it drain with >this out? Just a guess. Ignore if stupid.

Jay,

Certainly not a stupid idea. I think we're all on the list to learn--at least I sure am!

A couple of thoughts about the open sender hole(s) letting the oil drain back down:

1) I *think* there is an anti-flow back valve in the oil filter to prevent loss of prime once oil is flowing in the system (or at least, if there's oil between the filter and the pump). If there were no such valve somewhere in the system, then loss of prime could be a chronic problem, I would think, since the pump itself sits well above the normal oil level in the sump (hence the need for a long pickup tube to pull the oil up from the sump to the pump) and the oil would drain out every time I shut off the engine!

2) Okay, supposing I *did* lose prime because the sender was out and the oil could reverse flow and settle down to the sump again. If that were the case, it seems to me I should be right back where I was originally, no? But I'm not. I could pull the oil up through a dry empty pump *once*, and blow some oil out the sender hole, but not a second time less than 15 minutes later. This seems really strange to me. Trial #1: dry sump, spin shaft, pump primes and I get oil pressure. Trial #2: dry sump(?), spin shaft, and I cannot get oil pressure. No change in set-up between trials #1 and #2.

I'm ready to paint my bus red, and am looking for the Johnson kid. (Sorry, "Kids in the Hall" Canadian comedy reference...)

T.

------------------------------------------------------------------------- Tobin Copley Bowen Island, BC, Canada 49deg 23'N-123deg 19'W

'82 Westfalia 1.6L NA diesel ("Stinky") '97 son Russell ============= '99 daughter Margaret /_| |_L| |__|:| clatter SPEED KILLS! {. .| clatter! Drive a Vanagon diesel ~-()-==----()-~


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.