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Won't stay idling/rough idle. A misfire is a symptom of a 4-stroke dirt bike that needs a valve adjustment. Definitely check your valves, but if you can easily cold start a carbed bike without any choke, especially when ambient temp is 80F or cooler, your carbing is likely a bit rich. When the exhaust valves get too tight they will also cause hard starting and eventually get hot enough to start melting - not pretty. I didn't want to wait for really bad symptoms, so I checked the valvesIn was at zero, left was in spec were off. delta lahara lowes I would adjust them now, while you have the chance. When the intake valves get too tight they will cause hard starting and poor idling. 2-stroke is an entirely different engine design (and way more fun, fight me in the comments!) When the valve closes, it seats against a beveled edge called a valve seat. A choke, sometimes called a choke valve or choke cable is intended to constrict airflow in the carburetor of an engine - in this case, a motorcycle engine. cool nath games.com So, keep reading to learn more about how tight your dirt bike chain should be. You are right , of course, about the lean burns being hotter, the limit being NOX production rather than valve temps. May 18, 2024 · When experiencing a loss of power on your dirt bike, one potential issue that may be causing this is a misfire, which can occur when the valves in your engine are out of adjustment. Eventually a valve will break and possibly trash your whole top end. could burn up valve seals or worst case, valve could impact piston. la fitness gym membership Let's get right to your questions… and the answers. ….

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