kenziesupra
New member
Hello, I've been working on my brothers 1990 exciter 570 that has an aaen pipe and 330 jets. it runs fine when cold but when it warms up, it will bog. it only bogs in mid throttle, when i let off the gas then go again (like going around a corner). i can pinch the throttle from a stop and it will get through the bogging range easily but once i let off then give it gas (after its warmed) it will bog down. Ive gone through the carburetors and cleaned them, ive changed the secondary spring position from A2 to B2 (cleaned & greased it as well) and it seemed to run a little better but once it warms up again, it will bog. The belt deflection seems OK, if I lift the back while it's running, the track will creep. the plugs are light brown with silver crown at the tip of the electrode. ive been messing around with it for awhile now. ANY help at all would VERY greatly appreciated. Thankx


