How to properly flush the cooling system.... - ZX6R Forum
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post #1 of 40 Old 08-29-2011, 10:35 AM Thread Starter
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How to properly flush the cooling system....

I have been meaning to post this up for over month. Sorry. I did this on my 07 ZX6R. I am sure it is similar on the newer models not sure of earlier models. It is a pretty simple task to do at home no need to pay the stealership.

Lets start off with Kawasaki instructions. I never leave home without them...


Only on side fairing has to come off and it is the mid left fairing....


and the upper right cover to access the radiator fill...


Now once these two have been removed there are two drain bolts on the block one is behind the header and the other one is on the water pump cover...

This bolt requires a 10mm socket


And this one requires a 8mm socket. (I nylon tied the wires in front of it to the shifter pedal so it would not splash me.)

Remove the lower bolt first until it completely drains...


Then the upper bolt behind the header also till it completely drains...


Then at the bottom of the reserve tank remove this hose and drain it...


Once all is drained fill the radiator with distilled water only and pour it very slowly not to trap bubbles. (I used a small funnel I had that kept everything clean.) Also fill the reserve tank to the fill line.



Now put the radiator and reserve tank cap back on and turn on the bike. Run it until the fan turns on and shuts off. Once the fan shuts off, shut off the bike. Let it cool and drain it once again. I did this about four times until the last time the water came out looking like this...

Now she is clean .

Put the screws back in and do a final fill with the antifreeze. Also filling it very slowly. Once everything is topped off including the reserve tank to the full line. Tap the radiator hoses a couple of times to help get any air bubbles in the hoses out then start the bike with the radiator cap off and let it run you will see bubbles coming up that is trapped air, let it go until it stops and put the cap back on.
Tada!!!! You are done and saved yourself $120.00.
P.S. I also added water wetter to the antifreeze during the last fill. Just a little added insurance.
Hope it helps!!!!

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Last edited by DaddysNinja; 08-29-2011 at 02:09 PM.
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post #2 of 40 Old 08-29-2011, 10:42 AM
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sweet how to iv not done this to my bike but i might do it before the winter comes


its not what u know its who u know!!
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post #3 of 40 Old 08-29-2011, 12:08 PM Thread Starter
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Thanks man. Do it. I downloaded the manual from this site.



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post #4 of 40 Old 08-29-2011, 12:24 PM
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Thank you, sir

Good thread...nice pics
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post #5 of 40 Old 08-29-2011, 12:39 PM
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Thanks dude. Nice write up!
This should be stickied.


Last edited by DiabolikaL06; 08-29-2011 at 12:42 PM.
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post #6 of 40 Old 08-29-2011, 12:52 PM
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Great post...thanks
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post #7 of 40 Old 08-29-2011, 01:17 PM
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been meaning 2 do this for the past couple weeks. i think the bike is runnin a lil hotter than it should. nice write up bro.

any1 have any good recommendations for coolant?? i went 2 pepboys n autozone n they all said they werent sure if regular car coolant was good enough since most coolants are for temps up to 200. where as bikes clearly go up 2 240ish.
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post #8 of 40 Old 08-29-2011, 01:39 PM Thread Starter
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been meaning 2 do this for the past couple weeks. i think the bike is runnin a lil hotter than it should. nice write up bro.

any1 have any good recommendations for coolant?? i went 2 pepboys n autozone n they all said they werent sure if regular car coolant was good enough since most coolants are for temps up to 200. where as bikes clearly go up 2 240ish.
You can see what I used in the last pic. And you can pick it up at your local autoparts store. Don't go cheap on this thou. I stuck with prestone and added water wetter. It will be fine. The dealership actually told me to use this coolant that it is the same temp range and is safe for aluminum motors.
Also if your bike is in the 240 range I recommend you do this very soon. My bike never gets any hotter then 225 sitting in traffic and on the highway it sits at 195 and sometimes even lower.



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Quote:
Originally Posted by trackdayhero View Post
Does it hurt when your parachute doesn't open?
Quote:
Originally Posted by Rimfire View Post
Only once.
Quote:
Originally Posted by SkyChimp
"You don't need a parachute to skydive; You need a parachute to skydive TWICE!"
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post #9 of 40 Old 08-29-2011, 01:42 PM
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it doesnt regularly get there. only got there ONCE. but it was flashin all crazy. lol it was like 105 out, stop n go traffic. i was literally stoppin n stayin in 1st for like 40 min. bike got 2 240 n started blinkin. that's the only time i got 2 that temp.
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post #10 of 40 Old 08-29-2011, 01:51 PM Thread Starter
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Yeah some fresh fluid would most likely fix that.
P.S. I hate TRAFFIC.
I live in the city and feel your pain man.



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Quote:
Originally Posted by trackdayhero View Post
Does it hurt when your parachute doesn't open?
Quote:
Originally Posted by Rimfire View Post
Only once.
Quote:
Originally Posted by SkyChimp
"You don't need a parachute to skydive; You need a parachute to skydive TWICE!"
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post #11 of 40 Old 08-29-2011, 02:21 PM
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awesome write up! that will help tremendously for those that want to flush the coolant themselves (which should be everyone; who doesn't want to save +$100? lol)
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post #12 of 40 Old 08-29-2011, 02:22 PM
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i'd say contact lash or kahearn to sticky this... but they're never around so *subscribed*. that way i know i have access anytime.
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post #13 of 40 Old 08-29-2011, 04:25 PM Thread Starter
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How do you subscribe? That is too technical. Lol



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Quote:
Originally Posted by trackdayhero View Post
Does it hurt when your parachute doesn't open?
Quote:
Originally Posted by Rimfire View Post
Only once.
Quote:
Originally Posted by SkyChimp
"You don't need a parachute to skydive; You need a parachute to skydive TWICE!"
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post #14 of 40 Old 08-29-2011, 08:16 PM
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How do you subscribe? That is too technical. Lol
scroll to the very top, the second green bar down, look to the right and click on thread tools
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post #15 of 40 Old 08-30-2011, 03:14 AM Thread Starter
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scroll to the very top, the second green bar down, look to the right and click on thread tools
Thanks



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SOLD 2007 ZX6R 03/29/2013

Quote:
Originally Posted by trackdayhero View Post
Does it hurt when your parachute doesn't open?
Quote:
Originally Posted by Rimfire View Post
Only once.
Quote:
Originally Posted by SkyChimp
"You don't need a parachute to skydive; You need a parachute to skydive TWICE!"
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