New xs400 owner need help with idling issues

[Lockmonsta1995]

Hi everyone in advance I appreciate all your inputs and hope you all can help me solve this. So I purchased this bike already modified to be a bobber now I've been working on it had to clean and flush the gas because of trash in it and now the bike has new gas and clean lines with a in line filter. The bike won't start with giving a little throttle and when riding it wants to die as soon as I let go down to idle. Any suggestions? Thanks

 

[Jessechop]

Have you turned the idle screw any?

 

[Lockmonsta1995]

Yes I've tweaked it a bit and I adjusted the butterflies to make them more in sync, but now I'm not sure where to put the screw. But also I'm running it without any air breathers on it

 

[xschris]

Make sure the carbs are clean adjusted and synced with a manometer. Then put a set of proper air filters on it. Uni's work very well with these type carbs. Post a few pics of the bike so we can see what you have.

 

[Scorpio1963]

Definitely get a set of filters otherwise you may get some serious dirt issues in your carbs

 

[Lockmonsta1995]

Okay I've got the filters ordered and I adjusted the idle screw this morning its running a whole lot better but it's still a little rough, possibly need to be tuned afree the air filters

 

[xschris]

Straight pipes? Another thing that will give you tuning issues. Make sure the carbs are jetted and adjusted for that.

 

[Lockmonsta1995]

Yes custom straight pipes but I wanna go back to the original and change the frame a little but air filters should make a big difference