02GF74
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 posted on 14/10/09 at 04:50 PM |
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fixing a float needle valve?
got a drip from Mikuni carb (VM 26) that I cannot seem to cure.
I took the needle valve out - the one that is pushed upwards by the float - it has sign of some where, put it in drill pressed cleaned it up with 600
then 1000 wet'n'dry - that improved but still leaking.
(did same on 2 other ones and those are fine).
so what can be wrong?
anyone managed to fix these in the past (I'm talking bike carbs but the same machanism is used in a lot of other carbs).
Is it worth making some sort of tool to dress the base of the valve holder (the bit with the hole the the pointy part of the needed valve presses
agasint)?
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r1_pete
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| posted on 14/10/09 at 05:12 PM |
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If the needle was 'damaged' its a fair assumption the seat will be marked too.
Also check the floats aren't leaking, if they are twin floats, and one leaks, the pressure on the needle is reduced enough to leak.
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