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Old June 30th, 2015, 10:37 AM   #7
InvisiBill
EX500 full of EX250 parts
 
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Name: Bill
Location: Grand Rapids-ish, MI
Join Date: Jul 2012

Motorcycle(s): '18 Ninja 400 • '09 Ninja 500R (selling) • '98 VFR800 (project) • '85 Vulcan VN700 (sold)

Posts: A lot.
Blog Entries: 1
MOTM - Aug '15
Quote:
Originally Posted by Motofool View Post
If the float valves were working properly, the carbs would not overflow, regarding condition of the petcock.

Petcock is full opened when engine is generating vacuum and still keeping the proper fuel level in the bowls is the job of the valves of the floats.
Quoting for emphasis.

The petcock and the float valves both stop the flow of fuel. If gas is leaking into the engine, both of those parts are bad and need to be fixed. Your professional carb cleaning was incomplete/ineffective.
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