Any ideas? Runs rich with 2 to 1

[silencethevoice]

you should be able to get it jetted with the DEK just fine. how does it start when the motor is COLD, do you have to use the choke or not? likewise, when the motor is WARM, do you have to use the choke or not? 38 pilot sounds a tad lean to me so that's strange. yea, something wierd seems to be going on... but i was probably the first to play with a different needle on the single carb intake. you have to do what you feel is needed. if a leaner M or N diameter is just what it needs, order one up and try it. seems every bike jets out differently and the single carb setup accentuates that. have you tried lowering needle some, like 3rd or 2nd clip? i'm afraid that'd eat into your midrange power some tho, so you may be on the right track.

 

Well, I am starting to near my wits end with this thing.. I went ahead and pulled the intake apart today just to check the reeds.. They looked fine, but I replaced them with some Boyesen's anyways. Still no change..

 

When the motor is cold, it will start with no choke needed. When it is warm, still starts fine, just the thing really puts out some smoke, smells rich, and has really terrible off-idle response. I have tried playing with the clip a little, but my main problem seems to be with the pilot/idle circuit so I haven't done too much there yet...

 

I am not totally new to tuning these things, I've tuned dual pwk's before, and I even ran a single 38 on another bike and got it to run decent.. Just this thing will not seem to clean up in idle-1/8th no matter what I do..

 

Just for shits, I replaced the needle with a CGN that I had laying around from another bike. That really seemed to clean up the idle and off-idle response. But of course, then my mid-range was pretty screwed up (too lean).. :shoothead:

 

Could it be the pipes that are throwing things off? I was told by the guy I bought it from that they were 1st generation Toomeys.. They look like toomeys, just very old.. Should I try and order up a DEN needle or something, or is there anything I can do ignition wise to deliver a hotter spark?

 

Please help.. I really don't have much else to try..

 

Thanks in advance.

 

Ryan

[silencethevoice]

you should be able to get it jetted with the DEK just fine. how does it start when the motor is COLD, do you have to use the choke or not? likewise, when the motor is WARM, do you have to use the choke or not? 38 pilot sounds a tad lean to me so that's strange. yea, something wierd seems to be going on... but i was probably the first to play with a different needle on the single carb intake. you have to do what you feel is needed. if a leaner M or N diameter is just what it needs, order one up and try it. seems every bike jets out differently and the single carb setup accentuates that. have you tried lowering needle some, like 3rd or 2nd clip? i'm afraid that'd eat into your midrange power some tho, so you may be on the right track.

 

I figured it out! Turns out it was just a bad carb.... I went ahead and bought a brand new 34 pj and after a little tuning, shee runs great! :thumbsup:

 

I bought the setup used, and I guess you never really know what you're gonna get.. But it runs really strong now. It's got a really strong bottom/mid range hit.. Just waiting for another day to do a plug chop.. Just wanted to say thanks once again for everyone who took the time to help out..