[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [New Search]

Re: [T3] sustained idle problem


> This (twin-carb mixture adjustment) is a subtle
> adjustment that requires very close attention and some experience, or at
> least careful experimentation.
>

I find the most helpful thing is a CO meter - even with twin carbs, you can
easily see when things are correct.   It should be the law that there is a car
hobby group in every town with one of these owned jointly!

Dave.
UK VW Type 3 & 4 Club
http://www.hallvw.clara.co.uk/
------
----- Original Message -----
From: "Steven Ayres" <comwest@att.net>
To: "Type 3 Mailing List" <type3@vwtype3.org>
Sent: Monday, January 20, 2003 6:32 AM
Subject: Re: [T3] sustained idle problem


> ChuckH=> I set both sides @ 1-1/2 turns
> => then leaned them just a little.
>
> That's good procedure to start. What I've found, however, is that it's
> usually not even close to right. Variations in parts, crud levels, etc.,
> make it very rare that the mixture screws wind up set anywhere near the
> same. And you can't tell much from the intake balance. > Did you actually
rebuild one carb, or maybe just clean it up and change the
> float needle valve? It's better to do any full rebuild on both carbs, so
> they come back to spec together. They really need to be very close to
> identical to perform right.
>
> Tangential to your problem: if you haven't jetted the carbs for the 1641,
> I'd recommend you consider it, as it will make a big difference in
> performance. This is particularly true if you're working with 1500 carbs.
>
> On that helper spring: Most of the springs for dual carbs that I've worked
> with have been a little weaker than they ought to be, which I put down to
> age. So we often see extra springs in the engine bay. The best place for
> this is coming off the linkage on the right, down to the tin, parallel to
> the stock one. You'll usually find a convenient loop in the tin there.
>
> Steven Ayres, Prescott AZ
> '66 KG1600
>
>
> ------------------------------------------------
> To unsubscribe, E-mail to: <type3-off@vwtype3.org>
> For more help, see http://vwtype3.org/list/
>
>


------------------------------------------------
To unsubscribe, E-mail to: <type3-off@vwtype3.org>
For more help, see http://vwtype3.org/list/

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [New Search]