Possible air leak?

[celm]

all of a sudden my XB idles much higher now. when I spray carb cleaner in the area of the plastic spacer that's between the carb and head, the engines rpms drop and depends how much I spray it will stall it out.what you guys think?

 

[Phill]

all of a sudden my XB idles much higher now. when I spray carb cleaner in the area of the plastic spacer that's between the carb and head, the engines rpms drop and depends how much I spray it will stall it out.what you guys think?

I'd be buying an alloy inlet

http://www.davesmotors.com/ada-billet-rc-cy-intake-manifold.html

May as well throw on a WT990 while you' got it apart

http://www.davesmotors.com/walbro-wt-990-carburetor.html

 

[celm]

I'd be buying an alloy inlethttp://www.davesmotors.com/ada-billet-rc-cy-intake-manifold.html

May as well throw on a WT990 while you' got it apart

http://www.davesmotors.com/walbro-wt-990-carburetor.html

I carbs with no chokes, are they harder to start?

 

[Phill]

I carbs with no chokes, are they harder to start?

They're very easy to start

Just prime the bulb, give it 2 slow pulls then pull it hard and it will start

Sometimes mine will start on a slow pull.

Performance is heaps better than a stocker.

 

[andyken]

I carbs with no chokes, are they harder to start?

If its tuned right it's no prob...

Mine will start after a few slow pulls, but if it's cold out I need to manually choke it.