Overheating 2005 rm250z is overheating really bad! I race enduros and even when we just play ride it still overheats and spits out all coolent. please help

Question moved from Cars and Trucks to correct category.

I used to ride enduro, mind you, it was 50 years ago. I rode a Huskie 400 Automatic as a tester.

Your overheating issue is well know on this bike!

https://www.google.com/search?q=husqvarna+enduro+701+overheating

..

SOUNDS LIKE ONE PROBLEM CAUSING 2.BRAKE FEEL MUSHY? FROZEN CALIPERS HOLDING BACK TRANS-RACING MOTOR CAUSING OVERHEATING BATTERY? OR.... BAD TRANS CAUSES RACING MOTOR TO OVERHEAT BATTERY.? SOUNDS LIKE 1-(CAUSE) SLIPPING TRANS , RACING ENGINE,,BATT OVERHEATS ETC........DEPENDS ON WHICH STARTS FIRST-TRANS ISSUE, 2 ENGINE RACING, 3 HOT BATTERY? THAT EQUALS A PUZZLE READY TO BE SOLVED. IF YOUR BRAKE SYSTEM WHERE IN GOOD SHAPE (EMERG BK TOO) I WOULD LEAN TOWARD THE TRANS FROM HERE. GOOD LUCK, FRANK M (PS, DONT KEEP CHANGING YOUR BATT BECAUSE OF THIS,THE ALTERNATOR IS OVERCHARGING THE BATT DUE TO THE RACING OF THE ENGINE DUE TO EVERYTHING ELSE. GO FOR THE CORE!

have you tried to check overheat gauge?? some temperature sensor? isn't that faulty?? I don't mean thermostat, but sensor...

is it really overheating, or gauge is showing overheating???

long time ago I had car that had same problem.... never overheated, but still signalized high temperature.....that time it was temperature sensor probably not compatible with correct one ....

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800 Pro RMK, overheating, coolers... a

The ports in the block could be cloged not letting the coolent flow completley threw and its getting to hot

Flush out coolent system, make sure your cooling fan for the engine is not faulty, replace waterpump and thermostat, fill with coolent, and im 99% sure you will not overheat as long as your coolent is topped off. Guarenteed!

The basics!!! The first thing I change when a vehicle is overheating is the thermostat! The second thing I check is the water pump, the third is the radiator cooling fan.

Even though you aren't overheating it still may be an indication of a blockage in the radiator/cooling system. Are you sure it's not starting to overheat? Do you have a gauge or a dummy light? BTW 63 Imp is a sweet ride =)

Air is being pumped into the system.

Bad gasket is most likely the problem.

If you did indeed overheat the engine to the point that is stuck, you would probably know it by the antifreeze being poured all over the ground. The bike would be really hot just sitting on it. It would smell like antifreeze and just smell hot.. I know, smell hot? but an engine that has been ran to hot has a pretty distinctive hot smell... It doesnt sound like an overheating situation if none of the above happened. A bike that is overheating will begin to loose power before it stops. LIke lacuna said, everything inside of the engine will start to expand from the heat and the piston will stick in the cylinder. Most of the time when this happens, the bike will cool off and restart. But, usually with problems. Warped or cracked head, cracked block, broken piston rings. These engines are aluminum and dont like to be overheated and warp really easy. If the engine is really hot, it will not turn over until it cools down enough. Im not saying it couldnt have overheated and then restarted without any problems, its happened before, but just not likely. But, if this is the case, take lacunas advice and change all of the fluids. Your oil will be nasty. Maybe get ahold of the previous owner and see if it has had any probems. It kinda sounds electrical to me. as long as the above overheating signs didnt happen. If you dont think it was overheating and it happens again, try to push start the bike to see if the engine turns over. even putting the bike in second or third gear just see if you can move the bike back and forth. If nothing else, you'll at least know its not locked up.