Re: PHGB 19.5 starting/idling issues on a sachs 505

Alexander Topazov /
This single post is part of a larger thread. Start from the top or view this post in context.

https://www.mopedarmy.com/wiki/How_To_Tune_PHBG_Carburetors

Two stroke AU atomizer

Four stroke AN atomizer

NOTE:If you have reed valves

If you're running the thick stiff reeds you will be fine with running the four stroke AN bushing just by running a richer or leaner AN atomizer, because reed valves reduce the intakes back flow/charge out the carb and back in. The soft reeds will reduce less of the intakes back flow/charge. It is the piston port set ups that will benefit the most by running the two stroke AU atomizer and bushing because the C shaped AU atomizer dam helps prevent the piston ports intake systems, back flow/charge out the carbs bore at low RPM’s from sucking more gas out of the atomizer when exiting out and back in the carb. So the two stroke AU bushing and atomizer will pick up less gas from the AU atomizer system at low RPM’s, on piston port engine's.

moped-army-aeca99065b60952a4c27bb3ac4997609.jpg
This single post is part of a larger thread. Start from the top or view this post in context.

Want to post in this forum? We'd love to have you join the discussion, but first:

Login or Create Account