Hi Guys,
I have been viewing this project for a while, actually since getting my 2004 in sept. I bought it since they were (for stupid reasons) going to be discontinued. I had a 91 and loved it, missed the hooligan power rush! Bike was hard to get, called over 20 dealers and wound up getting it in MD, wish I could have got it closer...
Well my bike was running rich (I broke it in as recomended) all I got was black plugs even after it was broke in, though I think some of it was the plug. I haven't been riding it since the first week I got it and went to my dad's (5 hrs. away but 110 acres).
Today was the day I was going to do something about it, I yanked off the carb and checked the float with a caliper, it was fine. I had jets I ordered from pro flo (took 2 weeks to get them because of hurricaned in Fl.) I probably made too many changes at once however. My main problem was (besides the black plugs) was it would not idle for crap, maybe 3 sec's with the air at 2 1/2 and the idle screw in all the way. I dropped the pilot from a 58 to a 52, main from a 168 to a 165, and the clip up a notch (2nd from top). I also cut the gas, I was using camII 110 octane straight with 40:1 H1R. I used 1 gallon of that mix and a gallon of super unleaded mis 93 octane.
I started it up and took the choke off right away, it idled by itself, but fast. Turned the slide screw out 2 turns at least and it still idled like a dream! Took off after warming it up some and then rode easy a little bit to get it up to temp then cleared her out. What I can say is that it runs incredible, wheelie any gear and moving dirt like a grader. No hesitation, idle is still a little too fast, and guess what, since day one I have the same thing you all have, the dreaded surging to idle, must be the nature of the beast. Sure glad it has good brakes! Nailing it down the street on the back tire in 4th then chopping the throttle it does not slow down quickly by itself, it will do it in any gear and neutral. Hit the gas, and just like gowens audio, the same thing.
After letting it cool down I pulled the plug, and expecting to see black (the usual) I saw something way different. It was tan, not white, not black, and this was not a plug chop. It was dry, even the metal on the bottom was clean and dry, before there would be oil on it. I hope I am not too lean somewheres. It ran perfect, scary as a matter of fact, except for the surging thing which it always did. Perhaps the carb is too small for the bike? I mean 250's run 38's. this is only 2x as big, and 1 mm more. I have seen 125's with 39's on them! Somewhere down the road it would be nice to try the 41mm, price is not bad (low 200's) and I think it belongs on there anyways. The temp here today was 68 and dry, I am at around 1200 ft. If I keep the jetting the same I will not run it in colder weather, only warmer or I might try changing the main back to stock (168) if I can get a tool to get it out without removing the carb again. Overall a HUGE improvement!
Thanks Guys,
Rob