Spike air cleaner, bowl vent screw and jets question.

[Evolution22]

I’m in the process of getting new jets/tune because my k9 runs sub par after installing the spike air cleaner.

My n00b question: Has anyone every tried just pulling the bowl vent screw and not getting new fuel jets? I say this because I saw a S&S carb picture saying->

“If the S&S teardrop air cleaner is being replaced with an aftermarket air cleaner be sure to pull the auxiliary bowl vent screw. - Never use velocity stack on street driven motorcycles. Poor throttle response will be experienced."

It says nothing about re jetting? Any info would be great. Or I could just do a trial and error before I get new jets/tune. I just don’t want to mess anything up.

-Matt

 

[DRBarnhart]

Pull it out and try it, won't hurt anything! Although don't be surprised if you still need to do a little jet work with the new intake...

Dennis

 

[toomanybikes]

What jets do you currently have in the carb? You are adding air input so you will need to increase the fuel. Read the S & S carb tuning guide so you can decide if your current jets are the correct size.

 

[Advodka]

I pulled my vent screw and re-adjusted carb following S&S's instructions and mine runs great. Checked plugs and all is well.:2thumbs:

 

[Evolution22]

My current jets are what ever stock is? All I know is it runs poorly after spike air cleaner install. Note: If I just take it easy the bike runs and idles good, but when you open it up it’s sluggish. Yeah, I need to research the S&S tuning guide.

 

[mark whitrock]

No way you can go to a spike and not re jet you will run way lean.

 

[Advodka]

My plugs don't lie and no decel pops either.

 

[mark whitrock]

That's pretty awesome I never get that lucky.