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Thread Topic: Carb Problems Threaded

   
Date: 5-10-08 06:34
From: Eduardo
Subject: Re: Carb Problems

You stated the car sat for a long period of inactivity. How long is that? Some people regard 1 month as long. If you park your car in the desert for 6+months, you can bet the fuel will evaporate. Gum and varnish is not a given, but a lot depends on how much and how old the was the "abandoned" fuel.

Hint: There is a reason why auto stores sell fuel stabilizer for stored vehicles.

Go to an auto parts store. There are several products you can add to the fuel or squirt down the carburettor that my do the trick and loosen the load. Gumout, Berryman's, Snap and others come to mind. I am not familiar enough with seafoam to recommend it, but it is mentioned here frequently along with Marvel.

Fortunately, the 32/36 is a simple carburettor and although easy to remove from the manifold, you might be able to squeeze by with just squirting some of the above through the idle jet ports and jet orifices. Then, you can always remove the top of the carb and work from there.

Good luck.



Date: 5-10-08 07:15
From: Eduardo
Subject: Re: Carb Problems

gsmith3 wrote:
It sat for almost a year. I did use some carburator cleaner in a spray can. Sprayed down venturis and above the jets. I also forgot to say that the accelerator pump (at least that is what I think it is, lever on bottom of bowl) doesn't seem to have any impact if I exercise it.


Pull out the idle jets (from the side) and clean them too. This is especially important with respect to the primary idle jet. THis ought to get the engine to the idle stage.

As for the accelerator pump diaphragm, if you open the throttle and you don't get no squirt = its toast. These do go bad with age and wear. I would expect you could find one at any VW accessories shop or order one from Pierce manifolds or similar retailer. There are typically 4 screws holding the pump together. Pull them out and you will see for yourself how simple this is. Be careful not to loose the screws! (If you do this on the car - having a magnet handy is not a bad idea).

You did not hear this from me, but I have seen others repair cracked or old diaphragms with inner tubes, diaphragms cannibalized from Solexes and with glue used for wet suit materials. I doubt any of these fixes are long lived, but if you are stuck . . . and the diaphragm has a pinhole leak or minor crack, then maybe. After all is said and done, you diagnosed your own problem.

Good luck.



Date: 5-11-08 02:37
From: c.d.iesel in South West Connecticut - Darien = The Right Coast View user's profile Send e-mail
Subject: Re: Carb Problems

""Could bad gas?? (old) cause this type of behavior
or is it gummed up jets or ports???? If the carb is gummed
up???, is there a carburator cleaner that I can run
through the carb??? (via fuel pump) that will help clean
it up??? or do I have to dis-assemble the carb to
clean it up????? "" ??


YES to all
_________________
1976 BMW 2002 #2743711(sorry I sold it 12/25/06)
1986 BMW R65 650cc twin 19k miles
1964 BMW R27 250cc single 15K miles
2002 BMW 325xiTouring 29k miles
1984 MERCEDES-BENZ W123 300D Turbodiesel-188k miles fein-DIESEL



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