ATC 250r New pipe!

[Red Rider]

Nice! LED makes a good looking pipe.

[Fox250R]

So I took it to the dunes and it ran pretty good for about 30minutes then it started sputtering on the top end. Checked the main jet it was a 185 pilot was 58 plug was black and wet.. So I dropped to a 175 52 and a new plug. Took it back out did the same thing ran much better for about 20 minutes then the top end started crapping out again, plug dark but dry.Dropped the needle from a dgh to a cej 3rd clip. Same thing but it’s improving a little. Not sure if I should drop another size in the main or what. Carlos says it might be something else going on.
This trike is something else! Let me tell ya

[Fox250R]

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[legacy51]

I've had similar symptoms with seemingly rich jetting, but no amount of jetting fixes it. I know that my Kawasaki ignitions aren't known for reliability, but 40 years old is a long time to live even for a Honda! Do you have a spare CDI or stator you could swap and try?

[Fox250R]

I've had similar symptoms with seemingly rich jetting, but no amount of jetting fixes it. I know that my Kawasaki ignitions aren't known for reliability, but 40 years old is a long time to live even for a Honda! Do you have a spare CDI or stator you could swap and try?

No extra cdi but I did drop to a 168m 52p and it seemed to cleaned up quite a bit. Dropped to a 50 and it was a bit lean so brought it back up to 52.


During all this I bought a sphinx 300 from Arlan. Should have it in 5 weeks.

[atc300r]

Try a new coil.

[Fox250R]

Well this doesn’t look good. Wonder how long it’s been like this


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[Fox250R]

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[Jd110]

Your 250R looks like blast…nice work!

[Fox250R]

Your 250R looks like blast…nice work!

Thank you.

[Red Rider]

So did you get your tuning issue figured out from July 2024?

[Fox250R]

So did you get your tuning issue figured out from July 2024?

Nope still rich. But i literally just replaced the entire ignition and electrical put it all back to OEM. Got some V force 3 reeds as well going to try it next week. Now if that doesn’t fix the problem then I honestly have no freaking idea at this point what it could be. Runs great when the engine is cold but once it warms up it’s sputters and goes super rich. Hopefully replacing the electrical will take care of it.

[Fox250R]

So did you get your tuning issue figured out from July 2024?

I also purchased a Sphinx cylinder from Arlan. I’m just trying to get my current monstrosity figured out before I go to the next lol
I’m very about this cylinder it’s going to be perfect for me I think.

[Red Rider]

I’m just trying to get my current monstrosity figured out before I go to the next lol

Yeah, I'm a firm believer in changing only one thing at a time, but I realize that isn't always an option. Typically, it makes the troubleshooting process easier.

[Fox250R]

Yeah, I'm a firm believer in changing only one thing at a time, but I realize that isn't always an option. Typically, it makes the troubleshooting process easier.

Completely agree, but I’m at the point to where I didn’t wanna sit there and test every component one at a time so I just changed everything the stater the coil, the wiring harness, the CDI and removed the other ignition that another shop here in Oregon installed.