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On Wed, 2003-01-01 at 02:42, Daniel Baum wrote: > Hi all, > > I just had both carbs open. I couldn't see any obvious signs of them > leaking, but then, I'm not really sure what I'm looking for. > > What I can say is this (i don't know how relevant all of this is, but > anything could be a clue): > > Both needle valves are OK > > Both floats float. > > The manifold/carb gasket on the right hand side was quite wet. > > The fuel level in the left had carb was rather low when I opened it. The > float was resting on the bottom of the bowl. > Do you by any chance have one of the springs that goes on top the float pivot missing?? > The left hand carb's accelerator pump doesn't work. This is not because of a > leaky diaphragm, though I changed it just in case. There is a hole next to > the pipe through which the accelerator pump squirts petrol, which is > supposed to have a brass insert of some kind inside it. This is missing. All > the accelerator pump does is blow bubbles through this hole.While it may > mean that I need to replace the bottom half of this carb, I don't see how it > can be causing the leak. > I think this may be part of the accelerator pump circuit. If I am pictureing it right, there should be a check ball under that brass plug. > I replaced the gasket on the throttle base of the right carb. It was > probably OK, but it was starting to fray a bit. > > What can actually cause a carb to leak gas into the cylinders? And how can I > test the fuel pump? It's a knock-off Brazilian jobbie, BTW. > See above... -- Russ Wolfe '66 FB MT (It drove) '71 FB AT '65 Bug (not running) russw@classicvw.org http://www.classicvw.org ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/