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
|>