Date: Sun, 30 Apr 1995 16:40:14 -0500 (CDT)
Sender: Vanagon Mailing List <vanagon@vanagon.com>
From: Jon Christensen <vvwca@PrimeNet.Com>
Subject: I'm Cured of the 009 Hesitation Blues!
Hi VW-Philes,
After much anguish trying to resolve my Bosch 009 and other types of
'Hesitation Blues', I have reached a cure. This pertains to 71 and newer
carbed dual port motors.
For the last few engines I have had the problems were the same--severe
hesitation at the low end acceleration after the bug has warmed up. The
bugs had 009 distributors and 34-PICT Solexes. On the first bug I
followed the tips in the Hot VW's hesitation blues article and had
optimistic success, but it still had problems which I blamed on a warn
throttle shaft and I figured it was a good as it gets. A friend of mine
and I both came to the conclusion that dropping the 100+ bucks into a
Brosol replacement carb was the only remedy. I did try to go with a
stock distributor for a while, but all the used stock distributors I
had seemed to have leaky vacuum advance units. However, even with the
vacuum problems, it still ran better the 009/PICT-34 combo. The vacuum
replacement units are not cheap when you can find them, so I didn't
consider replacement as an alternative.
Well, thanks to the advice of our local VW Guru I came up with another
solution, a cheaper fix to boot. According to the Guru, one of the big
reasons that the 34-PICT/009 combo often has hesitation problems is that
the 34-PICT 3 was made to run with retarded timing and the mechanical
distributor was made for advanced timing. Add the two together and there
are conflicts in the acceleration curve. Anyway, my solution was to run
a PICT 30-2 Solex. One can buy an adapter, but it's Sunday and the VW
Parts Place is closed, so I modified the existing dual port carb flange
to accept the smaller ventura carb (don't let the metal shavings get into
the manifold--stuff it with something) and used 12mm-headed nuts with
washers to clear the fat manifold throat. I also swapped the main jets
(my 30 had a #016 and the 34 had a #127.5). Man, oh man, what a big
improvement!!! My '72 no longer sputter/stutters and I'm off to
acceleration heaven! 8-)
Jon Christensen '56,58,62 Ghias,'56,62,67,72 Bugs,'59 Panel & '63 Camper
/V\ Membership Coordinator for the Vintage VW Club of America
\W/ Co-Editor of the Vintage VW Club of America Newsletter
vvwca@primenet.com Kansas City Kombis' NEATO Co-Representative
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