Jump to content
Sign in to follow this  

Stumped... Help on Jetting a CCC Mod CA 250X

Recommended Posts

So a couple months ago, or maybe around May, I performed all of the CCC mods, except for the R's cam. Recently I bought a Dr.D ehaust system, but that didn't recommend any jetting changes, so I left my jetting alone. However, after I performed these mods, my bike has always had a horrible bog as soon as I cranked the throttle from low RPMs... Here's how everything, after some tinkering (but to no avail), is set up:

40 Pilot

150 Main

Needle - 5th position from top (1 LOWER than recommended)

55 leak jet

Pilot Screw about 1 1/2 turns out

Air Filter Backfire Screen IN (stock airfilter)

Air Filter box cut to Honda's specifications (on the line)

I ride usually in 60-75 degree weather

at approx. 2000-2500 ft

I took out the carb when I did all these mods, and I also removed the smog pump (CA model). The bike runs great other than that horrible bog... Any ideas? I'm truly stumped, especially after tinkering for 3 months but having nothing change for the better. :cry::cry:

Share this post


Link to post
Share on other sites

I also live in So Cal and have the X. IMO you need to go to a 42 or 45 pilot and the clip in second grove up from the bottom to raise the needle more (richer). Pilot screw 1 1/2 to 2 1/2. The MJ sounds right. The bog is just a lean spot as you raise the slide. Good luck.

Share this post


Link to post
Share on other sites

I am in Norcal, but ride about same temps and altitude. I run a 45 pilot and a 152 main, needle on the 4the clip. Everything else is identical to yours.....

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

Sign in to follow this  

×