Cause of 4 stroking?

[djh66]

My 185cc with 24mm PWK, breathing direct, seems to be 4 stroking between 1/4 and 1/2 throttle, I'm running a 34 pilot and a JJH needle on 2nd clip from top, any ideas?
Cheers Dave

[coaster]

My 185cc with 24mm PWK, breathing direct, seems to be 4 stroking between 1/4 and 1/2 throttle, I'm running a 34 pilot and a JJH needle on 2nd clip from top, any ideas?
Cheers Dave

JJH is a bit rich, assuming you have tried lowering the needle (raising the clip) you could try a GJH, that's a bit leaner in the mid range.

[djh66]

I'll try it tommorrow, with the needle clip on top, if that improves it, i'll look to purchase a GJH.
Thanks

[djh66]

Has certainly stopped the '4 stroking', only thing now, is the revs take a while to drop when easing off the throttle?
Are ther any UK suppliers of PWK/Kehein needles?

Dave

[joeswoonara]

M.B.Delelopments

http://www.lambrettaspares.com/sparepar ... 0053s.html

[C*NTSPEED]

Yeah allens

[djh66]

Cheers chaps, advice appreciated as always

Dave