Tuning Kombi stock dual carbies

913 posts · joined Feb 2003 · 14 Apr 2003, 9:47 am

#38487

Hi everyone,

Yesterday I gave my '75 2L Kombi a pair of second-hand stock dual carbies. Installation went fine and it started easily! 😀

Driving to work today it ran quite well overall. It spluttered a lot under load while still cold, and the idle speed seems quite fast even when warm.

Basically, I'd just like some advice on tuning the dual carbies without needing special tools (if that's possible) - my manual talks about using an air-flow meter but I don't have one. Is there another way of checking that they're balanced?

TIA!

1959 red & white Beetle
1975 Kombi camper

KruizinKombi Seriously Obsessed Cyber Dubber

3,493 posts · joined Aug 2002 · 14 Apr 2003, 3:37 pm

#38540

Pull the wire of the fuel cutoff solenoids, one side at a time and compare how much the revs drop. 🙂

Kruizin Kol

Purple Martin Fahrvergnugen

913 posts · joined Feb 2003 · 14 Apr 2003, 3:42 pm

#38541

hehe, that's a great idea 😀, and i'd try it too, except that only one side has a cut-off solenoid - the other side just has a brass bolt filling the hole 🙁 .

1959 red & white Beetle
1975 Kombi camper

Andy Andy\'s Adventures

2,820 posts · joined Nov 2002 · 15 Apr 2003, 12:55 am

#38758

Ok, it's late and I'm getting lazy,
Check out these:
http://www.type2.com/library/fuel/34pdsit.htm
http://www.type2.com/library/fuel/dualsol.htm

It's a good idea to know what your doing before attacking these. Nothing too difficult, just a lot to go wrong if you are just fiddling. A good VW manual also will help a lot with stock settings.
Also don't forget the usual tune up, timing/dwell valves etc.

Let us know how you go.