Tuesday, 27 November 2018

GN250 carburetor problems


Hi guys, I'm fairly new to carburetors so I thought I would post my problem here.What is the problem? My GN250 (1 carb) only fires up with my hand covering the pilot air jet or with starter fluid. What did I change to the bike? New unrestricted muffler & replaced the stock air box with a new K&N universal filter. What did I do to the carb? I bought a rebuild kit, so new gasket/main jet/pilot jet/throttle needle/pilot screw.I know it is running lean, because I can get it to start with less air (blocking the pilot air jet) but I do not know how to fix it.I already tried turning my pilot screw a few more turns out, but that doesn't seem to work. The choke also makes no difference. Do I need to buy new jets? If so, do I need new idle and main jets and how big do they need to be?For reference, here is a drawing of the carb:https://imgur.com/a/RWNXh1fThanks in advance! via /r/CafeRacers https://www.reddit.com/r/CafeRacers/comments/a0ym3m/gn250_carburetor_problems/?utm_source=ifttt

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