View Full Version : 2010 KX450 Coolant Lose
April 18th, 2011, 01:45 PM
I heard if you replace the radiator cap with the 1.6 Kawasaki cap it would stop the loss of coolant. Well, I replaced it and it still looses coolant. I can see it run out the overflow hose but it isn't like it is under pressure like it would if overheated. The engine isn't overheating. I cannot find any other wet spots or leaks. The oil has no water in it. Has anyone else had this problem? How did you fix it? Any ideas? I thought about doing a leak down on the engine to rule out the head but wouldn't there be either be water in the oil or oil in the water?
April 18th, 2011, 03:46 PM
its a dirtbike that runs very hot, its going to puke coolant. In a car there is a recovery tank that catches it, and when the car cools off it sucks it back in the radiator... a bike doesnt. The stiffer cap helps, vbut doesnt stop this from happening
April 18th, 2011, 05:17 PM
Would after market radiators fix it or should I just fill'er up after every moto? Has anyone ever fitted a recovery system like I see on some of the factory bikes? I haven't really thought this through but what if I just plugged off the overflow tube? Would I bust a hose?
April 18th, 2011, 05:29 PM
i put a recovery tank on all my bikes, got them from motohose
April 18th, 2011, 05:30 PM
and no, an aftermarket radiator wont cure it either, just top it off after your motos
April 18th, 2011, 06:21 PM
Does the recovery tank require a different cap? Can I just Google motohose to find them?
April 18th, 2011, 06:31 PM
I found their site. For that price why wouldn't the manufacturer just put them on their bikes. Looks and sounds like a no brainer to me.
April 18th, 2011, 08:54 PM
Just a tip here put some coolant in the tank before you hook it all up
April 19th, 2011, 11:35 AM
Hater, is there any reason you used the Motohose system instead of Motion Pro? Motion Pro looks bigger but mounts to the fork leg behind the number plate.
April 19th, 2011, 12:39 PM
because it was small and out of the way. I didnt really like the idea of moutning it to the fork and having to run water lines toward the front....
April 19th, 2011, 01:58 PM
Thanks for the advice. You have been very helpful.
April 24th, 2011, 01:07 PM
before throwing your money at new rads you ought to give this stuff a shot,
April 24th, 2011, 03:22 PM
Todd from SLM told me to only put the coolant just to where it comes over the top fins. The coolant needs room to expand and circulate since I have done that I no longer loose coolant. I was having the same problem you were having till he told me to do that and now my problem is solved.
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