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Old March 28th, 2023, 07:55 AM   #4
Shafer
ninjette.org member
 
Name: Jay
Location: Nh
Join Date: Aug 2022

Motorcycle(s): 07 Ninja ex250 blue and 07 Ninja black

Posts: 133
New fuel filters both bikes. Same model filter as last season, that worked perfectly.

Black was tested with straight hose without filter. - no change.

I've test fuel flow from the petcock and both bowl drains all are strong.

This issue really has me stumped. And even crazier both bikes are doing the same thing.

I shimmed the needles because I read it helps out for mid level power.

Blue had .60mm of shim last year and it was noticeable riding black that was not shimmed.

Idk maybe I don't need any shims because everything this so clean and fixed up?

I did try taking the shims as part of my troubleshooting and it felt like it ran better with them. I did not test ride or change mixture setting with them out but couldn't rev past the wall so I put them back in.
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