biggeffory Posted October 17, 2022 Report Share Posted October 17, 2022 Hi, I have a 2004 Scorpa SY250 (with Yamaha TYZ250 engine) and it keeps overheating. It takes a good run to get it to overheat but I know it's overheating because coolant is purged from the radiator cap overflow hose. And more recently it actually blew coolant out of the radiator and created a radiator leak. The fan also runs non stop, once it starts, even if the bike is kept moving. Things I've checked: - It has coolant, engine ice (proper stuff) - The water pump works - The fan comes on (so the fan itself and the thermostat is fine) - The radiator has flow, the coolant can go in the top and out the bottom so there are no blockages So it seems to me that the cooling system itself is fine but the engine is generating more heat than can be cooled; I've no idea why though. This is my first trials bike and I love riding it but currently I have to turn it off every 15 mins to avoid overheating it, which isn't great. Not sure what else to do with it, but would love to sort the issue. Any ideas or suggestions are greatly appreciated 🙂 Thanks Quote Link to comment Share on other sites More sharing options...
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