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Old September 24th, 2013, 10:54 PM   #11
MasterCylinder
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Name: Bryan
Location: TX
Join Date: Apr 2012

Motorcycle(s): '90 ex250

Posts: 155
Quote:
Originally Posted by Motofool View Post
The problem is in the floats, the float's valves soft parts or the seat of the valves.

Floats could be leaking and sinking.

The soft parts of the valves may be hardened or broken.

The seats of the valves may have developed some hard sediments that prevent the valves from closing completely.

Grab a magnifier !!!

You can do all those tests with the carbs out and using a long hose that mimics the height of the fuel inside the tank respect to the floats' valves.
All the parts inside the carb are brand new... I'll take it apart again if that may be the case. I did notice the floats themselves while they move don't seem to have that much range on them.
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