250-500cc 1998 wr 250 help needed

Hi im after some help with my 1998 wr 250 if im coasting down a road with the clutch in the engine seems to chugg really bad anyone come across this problem any help would be appreciated

Help please I thought someone might have a few suggestions or has had a similar problem I am experiencing with the sort of chugging/lurching problem whilst freewheeling with the clutch in I was thinking maybe a air leak but bike bike runs fine other than when freewheeling I will try and get a video of it next time I go out

Your post isn't very descriptive. When you say "clutch in" do you mean with the lever pulled and the clutch disengaged? What does "chugg really bad" mean?

hi it sort of lurches forward even with the lever pulled and the clutch disengaged when freewheeling down a hill and maybe a knocking sound but no knocking noise when on tickover or when reved or riding its a strange symptom there is no loss of power either if i go out on the weekend i will try and film it

Warped steel clutch plate. Take the plates out and check them on a pane of glass for straight. My 02 had an issue very similar and my bud said to check the plates. Found one was warped. Changed it ...problem solved.

or an air leak

was gunna say clutch plates too when I heard "lurches" clutch in.

thanks for the info i will take a look at them i put a new clutch friction plates in they where hard to find but didnt change the steel plates i have also seen a bit of smoke come out at the seal on the power valve cover anyone got an idea where i could get the steel plates or know if a newer clutch plates will fit

Here is a video of the bike making the noise my son made a video of it for me if you listen to it on tick-over it makes a sort of chugging noise but runs great whilst riding it


View: http://youtu.be/1asuhevqFsI

lean surge caused by air leak or lean pilot and air screw.

i noticed the powervalve seal blow a little smoke would that cause it