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Re: [T3] Carb synchronization tool


I'm not sure what the air adjustment screw you mention is Keith - you mustn't
adjust the air-flow with the mixture screw or the mixture goes wrong.

Once you've got the engine running, you do the mixture screws (the ones with a
black wheel) first to get the correct mixture.  If you've no CO meter, adjust
for max rpm then a tad richer.  Then do the other mixture screw.  Check both are
still OK.

Then do the airflows - remove right rod.  Adjust throttle stop screw to get the
same flow on each carb, and then adjust the rod length so it doesn't change the
throttle position when re-connecting (I usually find it's exactly the same as
before cleaning).   It's a fiddle as you have to end up at a proper idle speed.

You do need to have the choke rod adjusted to give the right opening of the flap
when the stop has a particular gap, but unless it's all been taken apart or come
loose, it shouldn't need adjusting.

Oh, and make sure the balance pipe connections are all good - very confusing if
there are leaks there.

Dave.
UK VW Type 3 & 4 Club
http://www.hallvw.clara.co.uk/
------
----- Original Message ----- 
From: "Keith Park" <topnotch@nycap.rr.com>
To: <type3@vwtype3.org>
Sent: Friday, August 12, 2005 4:06 AM
Subject: Re: [T3] Carb synchronization tool


> Ya know, all this sync talk has me syncing... er, thinking.
> Im setting the stock solex's back up on the Crate engine, and basically
> there is ONE flow adjustment on it.  You set the idle screws a fixed amount
> from closed throttle (say one turn to start) then adj the linkage to start
> to open the throttles at the same exact time... then once running all you
> can really do is adjust the flow with the air adjustment screw till the 2
> are the same on the sync tool (unisyn in my case)

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