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Old October 14th, 2020, 06:47 PM   #18
notunderweight
carb hater
 
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Name: Jake
Location: Boulder
Join Date: Oct 2020

Motorcycle(s): 2006 Ninja EX250F

Posts: 23
Quote:
Originally Posted by DannoXYZ View Post
Having some measured numbers would help:

- vacuum at petcock-inlet when cranking
- petrol volume flowed from petcock in 10-seconds of cranking (aim fuel-hose into measuring cup)

There have been instances of leaking/crimped vacuum-hoses limiting vacuum to petcock, thus it doesn't open enough for full fuel-flow. Or petcock is clogged/damaged such that it doesn't flow sufficient fuel. Ultimate test is just to measure output-flow in 10-seconds and compare to spec in manual.
I'll run the fuel-flow test tomorrow morning, check the service manual, and report back. Vacuum pressure is trickier, as I don't own a gage or know where I could borrow one... Is that something I could rent from an auto part store, do you think?

Quote:
Originally Posted by Triple Jim View Post
Do the exhaust pipes get equally warm upon starting?
Interestingly, no! I'm not super familiar w/ the characteristics as I just got it a few months ago, but it definitely feels like the pipes are taking longer to warm up. Same temp each side, though.
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