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post #1 of 13 (permalink) Old 04-25-2010, 07:41 PM Thread Starter
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Question overheating?

I have a 96 scrambler 400 i just completely rebuilt, it runs great but now ive noticed that the coolant overflow jug will over flow and bubble. Radiator has good pressure when the cap is removed, fan works, coolant lines don't seem too hot, and i can watch the coolant flow when i rev it up. any ideas?........
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post #2 of 13 (permalink) Old 04-25-2010, 08:44 PM
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Fan is blowing towards the motor?
Sounds like its building up pressure Did you double check the counterbalance oil?
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post #3 of 13 (permalink) Old 04-26-2010, 05:03 AM
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Welcome to the board!

I tried setting my password to "penis" but it said my password wasn't long enough...
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post #4 of 13 (permalink) Old 04-26-2010, 06:50 AM
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Quote:
Originally Posted by TinkerMan View Post
Fan is blowing towards the motor?
Sounds like its building up pressure Did you double check the counterbalance oil?
counterbalance oil?
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post #5 of 13 (permalink) Old 04-26-2010, 07:32 AM Thread Starter
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i check the counterbalance oil after every ride because the the water pump leaked before and thats what ruined the engine. the fan blows the right way
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post #6 of 13 (permalink) Old 04-26-2010, 07:45 AM
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And where and what is the counterbalance oil?
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post #7 of 13 (permalink) Old 04-26-2010, 10:00 AM Thread Starter
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The counterbalance is driven off of a gear on the crank just behind the flywheel. Has its own gearcase on the flywheel side of the engine Counterbance keeps the engine from vibrating itself into destruction, the water pump is also mounted on the counterbalance shaft. It's common that the water pump seal wears down the counterbalace shaft causing coolant to leak into the gearcase eventually rusting and destroying the bearings and gears(thats what happened to my engine). the dip stick is red or silver on the back of the motor under carb. it takes 30 weight oil. Counterbalaces are 400 dollars. $$$$$ i would change it every year.

Last edited by atomicstew; 04-26-2010 at 10:03 AM.
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post #8 of 13 (permalink) Old 04-26-2010, 10:04 AM
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Awesome, very good to know for a new owner. Just motor oil in it, eh? Ill check mine.
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post #9 of 13 (permalink) Old 04-26-2010, 10:26 AM
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Water pump failure and broken OEM Piston skirts are 90% of my rebuilds So swap out the stock polaris piston and keep up with the counterbalance oil and AIR FILTER you will be WAY ahead down the road.
let me know if I can help I finally had a website built Polarisatvrepair.com
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post #10 of 13 (permalink) Old 04-26-2010, 06:45 PM Thread Starter
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i noticed the antifreeze also smells like gas, could all of this be caused by a bad head gasket leaking exhaust into the coolant?
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