Lean or rich?

Well you have a 48 pilot already and although I doube it, you can oput that back in and see if it gets better. (Readjust your airscrew) if not then try a 42 pilot. A bog is a real hesitation in the engine to respond = lean, a grumble, spit, sputter type response is probably a rich situation. Based on your jetting now and where you live my guess is that you can go down to a 42 pilot for the dog days of summer but I may be wrong -Each bike is a little different. ALWAYS make one change at a time so you can verify the results.

My bike was a bone stock 200 once and I ran 155 main, 42 pilot @ 3/4, 1174-4. I could not get rid of the off idle bog with my needle in #2(leaner). #3(stock) was better but #4(richer) worked best with the 42 pilot. This was even more noticeable when I installed a REV pipe.

Also try a BPR7ES plug, it really helped keep my bike from loading up.

You say when it DOESN'T bog ('winding down'), but not specifically when it DOES. Is it from off-idle to 1/8 to 1/4? From a walking speed? Any load (on an uphill grade or level ground)?

You might try a tank of 40:1 to see if a bit richer all 'round matters (as opposed to changing a particular circuit). My intent in this case doesn't have anything to do with A/F ratio.

Maybe a seemingly unrelated issue? You mention having just removed the snorkle. Maybe cleaned the filter at the same time? Maybe oiled it too heavily? (Yes, I understand that would lead to a rich condition. Maybe an O-2 problem, too)

Was the snorkle removed so as to be reuseable? Put it back on?

Try a new plug.

what's your plug look like? try the new plug first. my 220 alway's seemed to have a bit of a stumbling trait. in 1st till I get a load on it, then it goes away. your pilot is close. maybe a 42 or drop the needle one clip? but your close!

uh-oh. Squeeze?

It's funny (to me) that I'm usually a stickler for doing things the way they are supposed to be done..but that 'supposed to be' is often an article of my own invention.

I would never, have never followed the directions for oiling a filter. If I had enough oil on a filter that I could squeeze it out, I'd figure I'd overdone it, clean it and start over.

I've used notoil from the beginning cuz it's so easy to clean. I spray it(since it's been an aerosol) evenly in and out, knead it in well. It's not even CLOSE to dripping.

I'm not saying you should do it differently than you do. The point is, that given your stated jet-set, I'd say you're close to being right the way I oil a filter. BUT, given the filter oiling method you use, I'd say you're still way too rich!

Oh...but change the plug anyway. Run an EG over an ES. You'll get better spark on the bottom, thus better burn overall. The EG is a fine-wire plug.



Ha! yeah...gravity usually does win. Doesn't THAT suck??

Congras! I'd still work a bit more on your jetting.