Question about 2008 Yamaha YZF-R125

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There is a little tank at the bottom of the bike that says coolant. what goes in it ?

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Coolant antifreeze mix 50/50, or water- wetter, cool-aid etc, don't add tap water, it will corrode engine.

Posted on Oct 08, 2009

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YZ 426 F 2000 mi bike is leaking coolant from bottom through this little whole on the right side, I also checked the radiator inside and it's all frothed up. How to fix?


Hi, Jesse and the usual suspects are:
1. Low coolant level.
2. Restricted radiator air flow.
3. Faulty thermostat.
4. Coolant pump or fans inoperative.
5. Vent hose crimped.
6. Air in the coolant and needs bleeding.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Coolant leaking from little hole in bottom of case YZ 400 426 450
Dirt Rider Magazine
Yamaha YZ426F Owner Service Manual
OEM parts for Yamaha
Yamaha YZ450F Owner Manual Page 3

Apr 08, 2015 | Yamaha YZ 426 F Motorcycles

2 Answers

Do I fill the battery from the header tank, like a car


I know of no motorcycle that uses a header/expansion tank. Can you include a make and model? Most batteries for bikes these days are sealed units. Please also include a photo of this white square thing.

Mar 06, 2015 | Tank Motorcycles

1 Answer

After about 100 miles or so my header tank slowly fills with water,i can **** it out of the header tank back to the max then put it back in the rad, so the rad is full and the header tank is at max,with...


G'day.
I guess your wondering what is going on- no loss of coolant but it's moving from the radiator to the catch tank.You put it back in the radiator & back it goes to the catch tank again- seems like somthings wrong but the answer is simple really.
As your bike warms up,the cooant in the radiator expands with the heat & moves excess to the catch tank.
Then the water contracts when the bike cools down & some of the coolant is now in the catch tank & the radiator a bit low.
So what to do.
Run it & this time don't put the excess back in the radiator.
Set the catch tank to max & then just moniter whats going on from there.
It's normal for the radiator to be down just that bit when cold to allow for the water expansion when it gets hot.
If the radiator gets too low ,coolant will be drawn out of the catch tank to fill it up.
This is called a coolant recovery system & is commonly fitted to liquid cooled bikes.
The part to check is the radiator cap.
You will see two rubber parts on the under side of the cap.
One black rubber on a spring & the other seal just under the lip of the cap.Check that these are not damaged.
If either is split replace the radiator cap.
I hope this has been of some help.
Kind regards Andrew Porrelli

May 11, 2011 | kawasaki ZX-6R Ninja Motorcycles

1 Answer

Where to put the water in a Kawasaki ZXR 400 1994


The is a reservoir tank mounted under the fuel tank on the left hand side of the bike.

Notes:
1. always use 50:50 water/anti-freeze
2. don't fill tank past the max line (excess coolant will get dump out the bottom of the bike when hot, and coolant of slippery ;)
3. If loosing coolant, find out why. Damaged hose, blown head gasket or stuffed thermostat are like causes.

Oct 09, 2010 | 1993 kawasaki ZXR 400

1 Answer

Tank of bike


If there is a hose coming from the radiator fill neck to this tank its a coolant reserve tank.

May 20, 2010 | 2003 kawasaki KX 125

1 Answer

Is 2001 fireblade water cooled??what do i have to do to check coolant etc???


yes....check overflow plastic coolant tank, should be located underneath rear seat, it will have two lines on it: hot an cold, and has an overflow tube attached, just like cars have. You add coolant into that tank up to the appropriate line. But i like to use "Cool-Aide" only because i race my bike sometimes and they wont let you on the track with regular antifreeze...its very slippery..and would cause to many accidents, and its "Red" and helps me to notice if i have and leaks. it is actually better than anti freeze, and helps the bike run a little cooler..and there is another product which i haven't tried yet called "Water Wetter".

May 09, 2010 | 2001 Honda CBR 929 RR Fireblade

1 Answer

How to check and add coolant to a 2003 Suzuki SV1000S


You have a cap on the radiator and an expansion tank hiding in there somewhere. I would check them both. Your coolant should be fine, may need just a little filling. Unless you are cooking something. My bike is a 02 and I have not had to even check the coolant. Also, if you have a water temp gauge that reads in degrees and not a light, the temp of the bike should relate to the air temp, while running, not city, If it says, 185, the outside air is 85, If it reads 192, outside air is 92, etc. . Check it out.

May 08, 2010 | 2003 Suzuki SV 1000 S

1 Answer

Leakin Coolant...HELPPPPP!!!


After letting a bike idle for 30 minutes it would make me suspect that the bike was overheating...its not good to let a bike idle that long.. this is one of the two reason that California lets bikers split lanes... one is motorcycles will take up less space in traffic and the other is that it gives a chance to keep the bikes engine cooler with a constant airflow over the engine.
Now , #1 check radiator coolant level, if low, top it off with coolant. #2 if the bike idles fine after "approx". 5-10 minutes ( normal operating temp)...and your not overheating, then continue to let it idle till it gets to "around" 185 degrees or so..if you don't hear the fan come on, then get on your bike and ride it around the block to cool the engine down, if that helped then you know its a bad fan, or bad thermostat/fan switch. The trail of water you saw could also have come from the coolant overflow tank hose at the bottom of the bike when it was overheating...make sure that the coolant reserve tank is filled to the appropriate level. Also check your oil to make sure that it doesn't have water in it..if it does...it"ll appear like a bubbly milkshake; if the oil is good, then chances are good that at least no internal damage was done. If after all this and it doesn't overheat and the fan comes on! then you"ll have to pull your fairings and check "all" the hoses for leaks. Hope this helps you out. Please can i get some feedback on this and let me know if this helped. thanks!

Apr 19, 2010 | 2002 Honda CBR 954 RR Fireblade

1 Answer

How to fill the coolant


when bike is cold, stand the bike up straight, locate the radiator cap, twist off and pour in your coolant, start the bike now, and wrap it up to 4k a couple of times let the bike settle then if it needs more put some more in. then shut the bike off and wait about five minutes then get on the bike and lean it back and forth a couple of times to insure you still dont see trapped air bubbles escaping. if no more bubbles then put cap back on. now there is another way and that is buy pouring coolant into the little coolant tank by the rear of the bike, you just flip the tab up and fill till the appropriate level for hot or cold is reached.

Apr 16, 2010 | 2005 Yamaha YZF-R1

1 Answer

How do i change the collant in my 1994 cbr 600 f2 my coolent is all souping right now


remove seat, turn fuel selector off, pull off fuel line to fuel filter, remove tank, you should see radiator cap now... turn loose not off, just incase still has pressure... now follow lower radiator hose and it will lead to the water pump and on the water pump there is a little screw on the bottom sticking out of the side...thats the drain for the system ...now place something to catch a lot of fluid and when you take the drain bolt out it'll start coming out but as soon as you take off the radiator cap it will pour out fast so be prepared. that bolt i think has a washer on it to, don't lose it...once drained, put drain bolt back firmly dont torque stand the bike up on a wheel stand and now slowly ever so slowly start to pour your coolant: coolaid, waterwetter, whatever, but not tap water. now jiggle the bike around once in awhile to get trapped air out of it it, may look full but you might have to get a stand or box about waist high set your tank on it and hook up the fuel...be careful dont let the tank fall, get someone to hold it for you...start the bike let it run for a minute shut down add more coolant, start it again run it and jiggle the bike watch to see if water bubbles are still coming out now rap the throttle up to about 4000rpm once or twice check the level again turn bike off let it set for a minute again, does the level stay now right up to the neck.... well then put on the cap and everything back on.. now when you have everything back on take for a short ride and then check your coolant reservoir, dont overfill it just up to the warm mark and you should now check the drain bolt for leaks...all done.
Can i get a very helpful reply....thanks

Oct 03, 2009 | 1994 Honda CBR 600 F(2)R

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