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RE: Weber acceleration problem....

To: Richard.C.Guynn@mcdermott.com, mgs@Autox.Team.Net
Subject: RE: Weber acceleration problem....
From: Larry Hoy <larryhoy@cwix.com>
Date: Mon, 09 Nov 1998 19:03:49 -0700
>      What am I missing?

Check the float adjustment.

Larry Hoy, Denver, CO. USA
http://home.cwix.com/~larryhoy@cwix.com
1967 MGB Roadster, Vintage Racer
1969 MGB Roadster, Driver 
1970 MGB Roadster, Fixer upper
1987 Jaguar XJ6 VDP, for the wife
"It's not how fast you go, it's how fast you go fast"
==========================================

> -----Original Message-----
> From: owner-mgs@autox.team.net [mailto:owner-mgs@autox.team.net]On
> Behalf Of Richard.C.Guynn@mcdermott.com
> Sent: Monday, November 09, 1998 8:13 AM
> To: mgs@autox.team.net
> Subject: Weber acceleration problem....
> 
> 
>      Okay, I finally got the ignition system working properly, and now I 
>      have a problem with the carb.  
>      
>      Background:
>      The carb is a Weber 32/36 DGAV installed on an 18V series MGB engine.
>      
>      This carb is the same one that was on the engine when it was laid up a 
>      couple of years ago.  It ran fine prior to that.  I have not changed 
>      anything on it.  The only thing I have done is to rebuild and clean 
>      it.  So it should not be a jet sizing problem.
>      
>      The Problem:
>      
>      I don't actually have it on the road yet, so all of this is coming 
>      from playing with the engine sitting in the garage.  I also let the 
>      engine get warm to test all of this out.  The problem is that the 
>      engine spits and sputters when the throttle is opened suddenly (sudden 
>      acceleration).  If I mostly close the choke plate and  hit the 
>      throttle, it seems to work just fine.  So I think it is a fuel 
>      starvation problem.  
>      
>      What I do know:
>      1. The car idles fine.
>      
>      2. The car revs smoothly to high RPMs if taken slowly.
>      
>      3. Acceleration seems to work fine if the choke plates are mostly 
>      closed.
>      
>      4. The accelerator pump appears to spraying fuel into the carb (I can 
>      hear and see it).  Whether it is the proper amount, I don't know.
>      
>      5.  I plugged a vacuum gauge into the manifold, and got a pretty 
>      steady number at around 20, so I figure that there is not a vacuum 
>      leak in the intake system.
>      
>      6. The timing appears to be properly set (per manual instructions).
>      
>      What am I missing?
>      
>      Thanks,
>      Rick
> 

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