pilot jet help

[djdfairchild]

how do i know how to judge my pilot jet size? (is it rich or lean)

is there an advantage to a round slide carb versus a D-slide? or no difference.

help will be appreciated

[marsrace2]

The D slide is a better carb, I have never had to change needle size just adjust by raising and lowering the clip on the needle. The Pilot jet is for starting, Idle and about the first 1/8th of throttle.

Heres a drawing.

[djdfairchild]

i didn't realize the needle had much to do with anything, is it more like a fine adjustment once you get the main jet right?

thanks guys, very helpful

[marsrace2]

nope, it is alot more than that. It is most of your mid range power.