~04 WR450 high speed jetting issue~
Posted October 30, 2009 - 03:16 PM
I did a search, and haven't looked at the jets I have in, but the guy I bought it from said he had it richened up a bit. The bike is almost brand new with around 20 hrs. at the most. He said he had the valves checked before he sold it to me, and it only needed slight adjustment which he had done. The bike starts super easy.
I disconnected the TPS and I didn't notice any difference at all.
Does this sound like I need to go richer-maybe richen the clip position? Or.... Anyone willing to help me out will be much appreciated. Thank you.
Posted October 30, 2009 - 03:22 PM
Clip affects jetting between 1/4 throttle and just below full throttle but.... I experiment first by moving the clip two positions closer to the top/flat and see if that makes a change for the better, Whiule you have the needle out to move the clip, make a note of the code on it.
Posted October 30, 2009 - 07:35 PM
Posted October 31, 2009 - 02:50 AM
Posted November 02, 2009 - 07:06 PM
I put a new plug in also-didn't feel any different until I moved the clip down one spot. But, the plug was massively rusted at the base-obviously from the previous owner washing the bike and not blowing that area out. The threads looked fine, and it wasn't hard to get out. It's a pain to take the tank off to pull the cap off the plug and blow it out, but I'll be doing that from now on. My local shop owner suggested spraying contact cleaner down there and blowing it out with the compressor before removing the plug-I'm glad I did! It's kind of cool that the outside cylinder wall has a little hole for the contact cleaner and debris to escape.
Thanks for the advice you guys gave me, I appreciate it. ~Happy riding~