Ok, thanks Joel. I do suspect my aux air regulator - as the van doesn't start really great when it's cold. I'' hafta look at Bentley, something about squeezing a hose etc and listening for the rev change. I also read somewhere something about servicing the valve, lubing it with w-d 40 or something. I guess 2 years is long enough for 1 air cleaner element. Time for a new one. Marshall ----- Original Message ----- From: "Joel Walker" <jwalker17@earthlink.net> To: "Marshall" <mjruskin@SHAW.CA> Sent: Sunday, May 05, 2002 03:27 PM Subject: Re: Remedy requested for Suspected "rich-running" 1.9
> > 1. Is the 1.9 always supposed to run very rich at start-up? ( I > think it is, because the O2 isn't warmed up - so I can't see how the > "richness of mixture" could be controlled at start-up) > > yup. all fuel injection engines smell rich for the first few minutes. > it's built into their programming. > > > 2. If I replace my tempII sensor, will this reduce richness, and > improve mpg? (currently quite poor) > > couldn't hurt. :) > > > 3. Can a vaccuum leak cause richness and poor fuel economy? > (remember I do have excellent drivability) > > no, vacuum leaking will add air to the mixture, making it leaner (more > air to fuel in ratio) and causes burned pistons. what could be > happening is that the aux air regulator is NOT allowing extra air, and > the mixture stays too rich (not enough air). could also be a dirty air > filter (not enough air). > > good luck! > joel > > > > Thanks, > > > > Marshall Ruskin > > 84 Westy > > > > > > > > > > --- > > Outgoing mail is certified Virus Free. > > Checked by AVG anti-virus system (http://www.grisoft.com). > > Version: 6.0.351 / Virus Database: 197 - Release Date: 4/24/2002 >
--- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.351 / Virus Database: 197 - Release Date: 4/24/2002 |
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Vanagon mail messages have been archived.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.