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Old 01-17-2022, 10:26 AM   #1
4T_Goblin   4T_Goblin is offline
 
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Join Date: Jun 2021
Posts: 239
Pilot jet up, or main jet down?

So I found some years old shed weed out back recently and of course I had to try it out. Here's the result.

On my Vader I'm running 35 pilot, 110 main in a genuine mikuni vm22 from Niche. I have an aftermarket pipe from Venom Motorsports which is the same as the stock but minus the cat. Polini pod filter. After a long ride my bike gets weak, leading me to believe it's getting lean, like the main jet is drinking up the reserve before the pilot has a chance to refill the bowl. By weak I mean the idle gets really low and it will stall. Always starts back up with a lil throttle crack. So I have to keep some air flow.

Here's the shed weed talking-

Should I pilot jet up to 38/40 from 35, or drop my main jet down to 105 from 110?

This is a genuine mikuni, stock (per their website) is 30 pilot/100 main. I went up initially because A) I didn't know quite what I was doing, and B) I jetted up because I thought I should due to the filter letting in more air than the stock box and the pipe being more open than stock.

If you have some shed weed go smoke it up for best quality answers.

Thanks for humoring me
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2020 Vader X-Pro X-7
2019 Kawasaki Ninja ex400
2022 Lifan KPX 250


 
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