Date:         Fri, 20 Feb 2004 09:36:07 -0700
Reply-To:     Sean Garrett <SEAN.GARRETT@ASU.EDU>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Sean Garrett <SEAN.GARRETT@ASU.EDU>
Subject:      Re: 1981 flooding issue
Content-type: text/plain; charset=iso-8859-1

Thanks Tom, the AFM was new 8 k ago with all the other FI on the engine. Although it was reading high on the HCs a month ago. So maybe it is adjusted to high. Is it possible for me to adjust it myself using 1/4 turn trial & error method ? Is it the screw under the cap next to the "box" lid ? Which way might I turn it ?

TIA 
Sean Garrett
81 Westy (his)
95 EVC (hers)
87 Syncro (2.5L Subie project)
82 Parts Vanagon (need a part ?)
Central Arizona




> -----Original Message-----
> From: Tom Young [mailto:tomyoung1@comcast.net]
> Sent: Friday, February 20, 2004 9:35 AM
> To: Sean Garrett; vanagon@GERRY.VANAGON.COM
> Subject: Re: 1981 flooding issue
> 
> 
> From: "Sean Garrett" <SEAN.GARRETT@ASU.EDU>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Friday, February 20, 2004 6:54 AM
> Subject: 1981 flooding issue
> 
> 
> >My 1981 has had a issue for 3 yrs. It floods from cold start
> >or hot if I give it to much gas. Last night it left me stranded so
> >I must address the issue now. I have some ideas on how to
> >track down the problem and want to bounce them off some folks.
> 
> >My questions are:
> 
> >Can I disconnect the electrical connections from the Aux Air
> >Regulator and/or the cold start injector and will they remain in
> >closed position (not function). Instinct tells me that they are not
> >functioning right. Perhaps the Cold Start Injector is pumping gas
> >all the time ?
> 
> You can disconnect the electrical connectors and that 
> *should* stop both
> items from working.  I wouldn't disconnect the Aux Air 
> Regulator since that
> isn't contributing to your flooding problem.  However, if the 
> Cold Start
> Injector is suffering from mechanical failure then disconnecting its
> electrics might not stop it from injecting.  Gas is always 
> flowing past the
> Cold Start Injector so if it's mechanically jambed in the 
> "open" position
> it'll discharge gas irrespective of what the thermo-time 
> switch is telling
> it to do.
> 
> 
> >The engine has 8k on a new rebuild and I replaced all the FI
> >stuff that is on the engine with new. All of the FI stuff on the
> >firewall is old and seems to be functioning fine. I am going to
> >permanently close off the EGR valve due to its innards are
> >toast and that was a rebuilt one from a company in California
> >that specializes in them (the spring-tension arm on that fell
> >apart so those items are NLA).
> 
> Since you indicate that you're flooding in both hot and cold 
> conditions this
> could also indicate a way-too-rich condition overall at the AFM.  The
> springs in these things weaken over time resulting in a 
> too-rich situation
> in all conditions and speeds.
> 
> ---------------------------------------------------------------
> Tom Young                       '81 Vanagon
> Lafayette, CA 94549         '82 Westfalia
> ---------------------------------------------------------------
> 
>