Messed with the stock needle on my 15 xc300. Never did really get it sorted. Bought a JD kit, this is my 3rd kit from them, all three other bikes we very very close with the recommended settings. 1st ride, 5k feet elevation, 60 degrees, used JD recommended 175 main, 38 pilot, red # 4, bike was way way rich. so much spooge, it ran down the ehaust and was dripping on the swingarm again. went to the 5 to 8k feet setup (170 main, red #3) rode it the next week, 6500 feet, 70 degrees, still so rich it wont clear out easily. low end response seems good, as does needle. its still a spooge factory with this set up, still dripping down the silencer all the way. I did notice the idle screw was wound in very tight, so I backed it out and turned the airscrew out a bit. Did I do the right thing there? and would you move to a leaner main again? Thanks in advance.
going away from JD recomended settings? 2015 xc300 help
- Thread starter BryanMcc
- Start date
it has a 170 in it now. JD recommended 40 to 1 instead of 32 to1 to help the drool problem. its horrendous. 170 was still rich tonight even at 4k feet. lowest elevation I have ridden all year. Jake, would you go to a 168 next or just go straight 165?
Jakobi
Super Moderator
If it was burbling rich I'd jump a full 162/165 size. If it just felt a touch fluffy I'd go the 168.
I think Simmo737 has a 2015 model with an AS1 carb and is running lean settings similar to what we previously would have with an AS2. Looks like the new engine wants less fuel.
I think Simmo737 has a 2015 model with an AS1 carb and is running lean settings similar to what we previously would have with an AS2. Looks like the new engine wants less fuel.
I believe it's an AS2 on this bike, it doesn't have a screw top cap. I'll try a 165
It has the cable choke. My last one broke at the threads and was a pain getting it out of the woods that day. So I think I'll put the std knob In it. Also, I thought I read you have measured the JD needles before, I have their spreadsheets, is there two similar needles I can use in the spreadsheet?
VxZeroKnots
Gold Level Site Supporter
Stock mixture on the 2012 is 50:1 and drools pretty bad. 32:1 must be awful
Jakobi
Super Moderator
Spread sheet doesn't plot JD needles or Suzuki OEM needles.
Realistically, just about any needle (even the OEM Gas Gas needle) should be pretty easy to dial in the clip position and main jet. The hard part is keeping that the same while you fine tune everything below 1/4 throttle.
I'd start with the choke plunger now that's been brought into the picture. Then continue on the same path.
FWW I have exchanged a few PMs with Peff since late last month regarding their 2015 EC300. Initial complaint being that the JD Red #3 felt too fat and fluffy for their liking.
Last update yesterday was as follows:
Thx a lot now it ran awsome i think a bit rich but i will lift the clip
To 2 position.
Greets from Germany Peff
That's after trying 40 NEDW#3 175, 15-20C 2500ft.
Realistically, just about any needle (even the OEM Gas Gas needle) should be pretty easy to dial in the clip position and main jet. The hard part is keeping that the same while you fine tune everything below 1/4 throttle.
I'd start with the choke plunger now that's been brought into the picture. Then continue on the same path.
FWW I have exchanged a few PMs with Peff since late last month regarding their 2015 EC300. Initial complaint being that the JD Red #3 felt too fat and fluffy for their liking.
Last update yesterday was as follows:
Thx a lot now it ran awsome i think a bit rich but i will lift the clip
To 2 position.
Greets from Germany Peff
That's after trying 40 NEDW#3 175, 15-20C 2500ft.
Thanks Jake, I'll try a different plunger before I jet it anymore.
