Carby troubles

Beetle426 Commited Dubber

52 posts · joined Aug 2004 · 15 Aug 2004, 10:51 am

#218021

Hi,
It's probably been answered before but i have a major flat spot in my carb! When it happens i just play with the accelerator pedal and off it goes.By then i have to change gear! It's the standard carby off a 1600cc (1972).I've read i should buy a 2 barrel weber? If so how much and where do you get them?:cry

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 15 Aug 2004, 11:28 am

#218024

if You buy a two barrel Carburetor, You will need a different inlet manifold, to fit the carburetor.
Weber used to make a carby that fitted straight onto the standard VW inlet manifold..
What carburetor are You using?? Solex 34PICT3 ??
You can fix the problem by adjusting the accelerator pump on the Solex carburetors, so they squirt more fuel into the manifold... this condition is usually caused mainly by the Bosch 009 distributor....
It works on revs, NO revs, No Go...
If You had an original VW Vacuum/centrifugal distributor You wouldn't have any problems...
There are people using all sorts of carburetors on this forum..
So, most carbies can be adapted....
My Son runs a Holley Bugspray carburetor and inlet manifold, plus bosch 009 distributor...
and His car really goes, but at the expense of more fuel...
It is a dual throat carburetor....

Lee -

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

barls Administrator Causer of Chaos and Mayhem

9,473 posts · joined Jun 2004 · 15 Aug 2004, 11:56 am

#218037

the most coomon mod for this is the 30/31 pic carb fitted with an adaptor plate which uses the standard manifold. alternatively fit a twin barrel progessive which has both power and ecconomy but uses slightly more fuel than standard but has more power

“We all pay for life with death, so everything in between should be free.” Bill Hicks
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Beetle426 Commited Dubber

52 posts · joined Aug 2004 · 15 Aug 2004, 7:32 pm

#218286

Thanks guys,
Yes, the carby is a Solex 34PICT .. one. I'll try adjusting the accelerator pump on the carby(have to look at the vw book for idiots) and see what happens.I just want it to run smooth.Yes i had a 009 but i put a electronic dizzy(Scorcher) that i bought for my past failed dream of a big HP bug engine! Thanks again.

Bizarre Moderator The artist formerly known as blue74l

12,787 posts · joined Aug 2002 · 15 Aug 2004, 8:27 pm

#218335

Here is a link for adjusting your carb

http://www.geocities.com/aussiebug1970/acclrtr3.html

read a couple of the other stories as well

Make sure everything else is perfect first or you could just be masking another problem.
Pict carbs are a bushed carb in the butterfly shaft. These wear and suck air - leaning it out. If the butterfly is loose your carb is stuffed.
Also things like cracked manifold boots can cause air leaks and flat spots.

Anyway

Futue te ipsum!!!