Question: #4 washers & pilot fuel screw turns

[franke3c]

Hi everyone,

Ive been trying to search for an answer to this question but couldn't find it.. hope someone can help.

1) Adding #4 washers will make the bike run lean or rich ? at what RPM range?

2) Pilot fuel screw turns - More turns out make it lean or rich? This affects idle right?

3) I added K&N pod, rejetted (stock exhaust) and sometimes on acceleration  I can hear a Pop Pop sound coming from the engine? Anyone might know what this is?

4) At night coming to a stop I can see a lot of smoke flow by my headlight. I dont have the best nose, but it smells like unburnt gas.  What did I mis-adjust?

Thank you guys!

[The Buddha]

#4 washers under needle will make it richer from 1/4 to 3/4 throttle... and actually make it richer everywhere, but that is the main range it controls.
Air screw (pilot screw is confusing) is richer if turned out.
K&N pod... the lunch pod that goes in place of the air box, or the stock look alike that goes in the air box. If lunch box and no air box, then 150 mains with pipe, and near impossible to get right with stock pipe. If stock clone K&N in airbox, with restrictor... stock jetting should work. But 40 pilots, and 125 mains and 1 #2 (or #4) washer under needle and 3 turns out on air screws will be a close start.
Cool.
Srinath.

[scratch]

Air screw (pilot screw is confusing) is richer if turned out.

You are correct in stating that it is not a pilot screw.
How about mix screw? If it is an air screw and you turn it out you are actually making it leaner (adding more air). And if this was the case, and our bikes run lean, we should be turning our screws in to make them run better.
If we all take our carbs off and trace where all the little tunnels go, you will find that one of the airjets in the mouth of the carb goes straight to the mix screw and the mix screw cavity also draws fuel from the floatbowl, thus the proper term 'mix screw'.

My apollogies for being so technical.