Fred,
Could this valve go bad ,thereby reducing fuel pressure and affecting
performance via fuel starvation, much like a bad fuel pump, only on a smaller
scale?
thanks,
Linda
Fred Schroeder wrote:
> Sounds like you have the evap fuel setup. From what I've seen removing it
> would be a chore. Plus it doesn't cause any problems. I'd just leave it
> alone.
>
> The 'fuel return valve' is basically a simple pressure regulator. The
> Roadsters have a continuous flow fuel system. Gas circulates constantly
> allowing the carbs to take whatever they need. This valve maintains a
> pressure of around 3 lbs on the carbs and allows the rest to return to the
> tank. This is one reason the Roadsters don't vapor lock. I've driven mine
> in the Arizona desert in the dead of summer and never had a problem. I've
> heard claims of vapor lock but have never witnessed it personally.
>
> Best regards,
>
> Fred Schroeder
> Denison, TX
> SRL311-13359
> TDROC
> Reg e-mail sitsinwest@texoma.net
> Home page http://home.texoma.net/~sitsinwest
> ----- Original Message -----
> From: "Brad Holmes" <bholmes@monk.aum.edu>
> To: <datsun-roadsters@autox.team.net>
> Sent: Friday, August 16, 2002 8:44 AM
> Subject: SUs & smog
>
> > Since were on SUs, I recently bought a 70 - 2000 California car that
> > has been de-smogged. The PO or the pre-PO has removed much of the
> > devices and plugged ports and did a recurve. There are still a bunch
> > of lines running around, to and from the tank. A couple questions.
> > 1. Can ALL the rest of the smog equipment also be removed and lines
> > and ports plugged, on the tank and in the engine room?
> > 2. Can the vent on the dip stick be capped off?
> > 3. What is/was the purpose of the "valve, fuel return assy, rear"
> > next to the rear SU? (F8B-1, item 119, top left of the pic in the
> > parts manual) http://www.gordon-glasgow.org/Images/8B.gif
> > Can the valve be removed and a regular fitting be installed?
> >
> > Thanks
> > Brad Holmes
> > 68 - 2k, Solex
> > 70 - 2k, SU
> > SEROC
> > OROC
> >
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>
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