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Old 03-28-2005, 11:01   #1 (permalink)
Joe
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Deceleration valve?

I have a 1972 Ford Mustang, 351C, 4bbl, 4-speed manual. I need to
replace or reroute around the deceleration valve (a/k/a distributor
vacuum advance control valve). I can't find a replacement for it
anywhere. Does anyone know where to find a replacement or how to route
around the valve? It is used during deceleration to advance timing to
decrease backfiring.

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Old 03-28-2005, 17:01   #2 (permalink)
Big Al
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Re: Deceleration valve?


"Joe" <lanser1996@joltmail.net> wrote in message
news:1112033039.758426.160420@o13g2000cwo.googlegroups.com...
>I have a 1972 Ford Mustang, 351C, 4bbl, 4-speed manual. I need to
> replace or reroute around the deceleration valve (a/k/a distributor
> vacuum advance control valve). I can't find a replacement for it
> anywhere. Does anyone know where to find a replacement or how to route
> around the valve? It is used during deceleration to advance timing to
> decrease backfiring.
>


It retards the timing on a 71?? You are talking about the dual diaphragm
distributor?

Al


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Old 03-28-2005, 20:01   #3 (permalink)
Joe
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Re: Deceleration valve?

No. 1972. It retards the timing when you remove your foot from the
gas, supposedly to reduce NOx and prevent backfiring. It's also called
a Distributor Vacuum Advanced Contol. You can see it in Fig. 113 (as
number 15) by following this link.
http://www.autozone.com/servlet/UiBr...3d801eeb84.jsp

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