The sealed mixture screw on the AFM ONLY affects the mixture at idle - has negligible or no effect at speed. Karl Wolz |-----Original Message----- |From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of |Tom Young |Sent: Thursday, August 19, 2010 2:01 PM |To: vanagon@GERRY.VANAGON.COM |Subject: Re: Heat, vapor lock, won't start? | |The only thing in the fuel system that comes to mind that would be "drilled |out" is the factory seal on the air/fuel mixture screw on the AFM. That's |what you would do in order to remove the seal so you could make adjustments |to the air/fuel mixture. That's consistent with my thought that this |*isn't* a vapor lock situation, it's a "too rich" situation caused by a |weakened AFM air vane spring. Adjusting the air/fuel mixture shouldn't |play |into a vapor lock situation. | |Tom Young |----- Original Message ----- |From: "Michael A. Radtke" <wa7zpu@CISAZ.COM> |To: <vanagon@GERRY.VANAGON.COM> |Sent: Thursday, August 19, 2010 12:57 PM |Subject: Re: Heat, vapor lock, won't start? | | |> Hello, |> |> Coincidence? |> |> I live in hot hot Phoenix and have had my '84 since new. I drove the |> van for years and never had vapor lock symptoms at home or on road trips |> until visiting Idaho about 15 years ago. I took the Vanagon to a dealer |> in Boise, and they said it was a known problem. They fixed it for free |> and told me that the fix was to drill out something in the fuel circuit. |> It only took a few minutes. The fix certainly worked and I have never |> had another problem. However, since then I have been through every part |> of the fuel system for one reason or another and I have never found any |> evidence of what they did. |> |> I know that this post appears useless since it offers no fix. However, |> perhaps my information will jog someone's memory of a similar fix of a |> known problem. |> |> Mike |> |> -------- Original Message -------- |> Subject: Re: Heat, vapor lock, won't start? |> Date: Wed, 18 Aug 2010 21:53:25 -0700 |> From: Karl Wolz <wolzphoto@Q.COM> |> Reply-To: Karl Wolz <wolzphoto@Q.COM> |> To: vanagon@GERRY.VANAGON.COM |> |> |> This was discussed very recently, like last week maybe. It was suggested |> that a separate ground strap be installed between the AFM and the body, |or |> perhaps it was the engine block (which should be grounded to the body |> itself. |> |> After much comparing of notes, that seemed like it might do the trick. |> |> Karl Wolz |> |> |-----Original Message----- |> |From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf |> Of |> |A. Hurley |> |Sent: Wednesday, August 18, 2010 9:34 PM |> |To: vanagon@GERRY.VANAGON.COM |> |Subject: Re: Heat, vapor lock, won't start? |> | |> |Ah, right - 1985 Vanagon. |> | |> |I have changed the temperature sensors.... |> | |> |Thanks, |> | |> |Andree |> | |> |On Wed, 18 Aug 2010, Jim Arnott |> |wrote: |> | |> |> change your temp sensor I & II. Check engine grounds. |> |> Tell us what vehicle we're workin' on . |> |> |> |> Jim |> |> |> |> -------------------------------------------------- |> |> From: "A. Hurley" <ahurley@SHOPVIEWIT.COM> |> |> Sent: Wednesday, August 18, 2010 8:38 PM |> |> To: <vanagon@GERRY.VANAGON.COM> |> |> Subject: [VANAGON] Heat, vapor lock, won't start? |> |> |> |>> Hi, |> |>> |> |>> This problem seems to happen only when we go to Idaho in summer - |each |> |>> year I go through the temperature sensor, fuel filter, etc - in a |> panic |> |>> and the van works fine in Seattle. |> |> |> | |> |Sincerely, |> | |> |Andree Hurley |> |
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