Pilot plug causing issues???

[5twins]

You shouldn't need smaller than stock jets. The technique chizler describes really doesn't work that well on the BS34s, they're too E.P.A. strangled. Your mix screws would react the same with pretty much any size pilot. The factory set these using an exhaust gas analyzer. With one of those, you could see differences in small screw setting changes. You won't hear them though, and as you found out, the idle doesn't stumble or change until the screw is nearly closed, or really far open (4 to 5 turns).

 

[chizler62]

You shouldn't need smaller than stock jets. The technique chizler describes really doesn't work thaThe on the BS34s, they're too E.P.A. strangled. Your mix screws would react the same with pretty much any size pilot. The factory set these using an exhaust gas analyzer. With one of those, you could see differences in small screw setting changes. You won't hear them though, and as you found out, the idle doesn't stumble or change until the screw is nearly closed, or really far open (4 to 5 turns).

That method is completely effective on these carbs. The idle will change as the fuel screws runs in its affective range. On my EGA you'd need to bottom the screws under a turn to meet emission standards to be crated and thatd be with opened up pipes and filters. Not sure how you can consider them strangled?

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