[T3] Weber Carb update

Sat Jul 14 17:32:47 PDT 2012

Yea, the dewpoints in Colorado were in the 20's!  Good thing to... as that
110 in Kansas would have been a lot worse if it weren't a Dry heat.

Keith

Re:  Water running down carb outside.

I guess if it's very humid and not too hot it might be condensation due to
cooling in the carb.  It can even turn to ice in the right conditions of
temp/humidity.  I don't know why it would only be one carb though, but VW
originally had a warm-air intake system, which probably isn't there any
more.

One thing I noticed at the Invasion in Colorado - virtually no condensation
on the cold beer can, but in the UK it was running with condensation.

Dave.
UK VW Type 3&4 Club
===================

-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of James
Lingenfelter
Sent: 14 July 2012 20:01
To: type3 at vwtype3.org
Subject: [T3] Weber Carb update

  False alarm.... somewhat. Just disconnected the fuel lines from the carbs
(had to remove the entire carb linkage/air cleaner assemblies just to access
the hose clamps on the fuel lines). The fittings in the carbs are NOT loose,
the fuel hoses are simply loose on the fittings, and no amount of tightening
(or overtightening for that
matter) of the hose clamps will secure them. I still have fuel seeping
through at the connections. I just replaced these fuel lines a few months
ago with the highest quality hose I could get. The fittings on the carbs are
the type that have one rounded "barb" at the end of the fitting. I don't
have much experience with these, I am mostly accustomed to the barbed
fittings that I've had on numerous Solex carbs over the years, where once
the hose is attached, you nearly have to cut it off to ever remove it.
Should I be having this problem? I guess I have to replace the fuel lines to
the carbs again, I didn't really leave enough slack to cut off the ends and
reconnect.  
Is there anything I can do to prevent this from happening again?

Also, still related to the Weber carbs: The last couple of times I've had it
running in the garage, within just a few minutes of running, a lot of
moisture is forming around the driver side carb, mostly near the base it
appears. When I first saw this, I thought I had a fuel leak somewhere, but
it is apparently water.... quite a bit of it....  
enough to be running down the intake manifold after 5 minutes of running.
What could this mean? Is something happening to cause a lot of condensation
to form on the outside of that one carb?

BTW, the car seems to idle better than it has in some time, now that I have
Jim Adney's plug wire set on board. Now, if I could just get fuel to stop
spraying all over the place, I might actually get to drive it!

On Jul 11, 2012, at 7:40 PM, Jim Adney wrote:

> On 11 Jul 2012 at 19:05, James Lingenfelter wrote:
>
>> I have never rebuilt a Weber carb, and don't recall having one of 
>> those fuel hose fittings out of the carb, so forgive my ignorance on 
>> this subject; so originally these fittings are simply force fit into 
>> the carb, with smooth surfaces all around, with no type of adhesive, 
>> and expected to stay in? That seems a little insane and dangerous to 
>> me. It's one thing on a vacuum fitting, but on a fuel line fitting 
>> where looseness could result in disaster, it just seems silly.
>
> I'm not sure whether they were press fit or cast in place. My money 
> would be on the former. At any rate, it worked for well beyond the 
> design lifetime, so it's not surprising that some of them occasionally 
> come loose after 40 years.
>
> Even now, most of them are fine until excess stress is applied to the 
> fitting. Sometimes this is the weight of a fuel filter and sometimes 
> it's careless tightening of a hose clamp.
>
> --
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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