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Until recently, my carbs were working OK, or so I thought.
Now the right-hand one is flooding. You can see fuel pouring into it after the engine is shut off. Today I tried replacing the needle-valve and the needle valve seal, and I tested the float to see whether it was punctured. As far as I can see, nothing helped.
Looking into the carb with a flashlight (i.e. torch) it seemed as if the petrol could actually be coming from the lower tube; the main fuel inlet that is part of the carb body and which is connected directly to the main jet. Is this possible? If it is, what could be the cause?
If this is unlikely and the petrol is coming from the accelerator pump tube, then it's probably just likely that the replacement needle valve that I used is faulty and I need to try others until I find one that works. It's very difficult to diagnose this stuff, as it seems there is no way to find the problem when the carb is out of the car. You have to keep removing the carb and replacing it.
Finally, what kind of washer is supposed to go under the needle valve?
Daniel Baum, '69 type 34 automatic.
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