Coolant overflow question - Wrist Twisters
 
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post #1 of 12 Old 02-15-2014, 05:11 PM Thread Starter
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Coolant overflow question

Changed coolant on my 919 recently...burbed the system as required by 3 quick throttle twists...since then the last 3 times ive stopped as soon as i get off the bike there is a quarter size puddle on the ground coming from the overflow tube...im not low on coolant...any thoughts?

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post #2 of 12 Old 02-15-2014, 05:48 PM
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Did you do anything with the overflow when you flushed it? Maybe fill it up past full?

if you love your motorcycle, set it free.. if it comes back and hits you.. you highsided
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post #3 of 12 Old 02-15-2014, 06:06 PM Thread Starter
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I drained it also and filled it to just below the full mark...after we rode today i checked it and it was about 1/4" past full...it should siphon back into the radiator as the bike cools...if not it may still have air in the system...

On my zrx there was a bleeder screw on the water pump to burp it...is there one on the 919 water pump?

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post #4 of 12 Old 02-15-2014, 06:29 PM
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Procedure from the service manual...

Remove the radiator reserve tank cap and fill the reserve tank to the upper level line.
Bleed air from the system as follows:
1. Shift the transmission into neutral. Start the engine and let it idle for 2 - 3 minutes.
2. Snap the throttle 3 - 4 times to bleed air from the system.
3. Stop the engine and add coolant up to the proper level if necessary. Reinstall the radiator cap.
4. Check the level of coolant in the reserve tank and fill to the upper level if it is low.

Theres a drain, but AFAIK it's not for bleeding.

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post #5 of 12 Old 02-15-2014, 06:36 PM Thread Starter
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Exactly the procedure i followed

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post #6 of 12 Old 02-16-2014, 08:14 AM
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You are sure its coming from the overflow, and not the weep hole on the water pump?

Doesn't add up..... if you are pumping coolant out the level should be low, either at the overflow or the rad.

I'm out of ideas :/

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post #7 of 12 Old 02-16-2014, 08:45 AM Thread Starter
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Quote:
Originally Posted by beefsalad View Post
You are sure its coming from the overflow, and not the weep hole on the water pump?

Doesn't add up..... if you are pumping coolant out the level should be low, either at the overflow or the rad.

I'm out of ideas :/
Dripping right out of the overflow tube on the right side of the bike

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post #8 of 12 Old 02-16-2014, 08:58 AM
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Maybe you filled the overflow tank right to the overflow level, engine got hot and coolant expanded into the overflow tank and coolant started leaking through the overflow tube. If that's the case it should stop at some point.

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post #9 of 12 Old 02-16-2014, 09:04 AM Thread Starter
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I filled it to the full mark but i noticed when i checked it after riding it was pretty close to the top when hot...probably nothing to worry about

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post #10 of 12 Old 02-16-2014, 09:05 AM
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Since I bought my '02 it vents a small amount of coolant from the reserve bottle if it is at the full line cold. Dropping the level to about halfway between the full and low lines cured this "problem".

Rob

If it has already been done, it is safe to assume it is possible to do it.
On the other hand, if it has not been done never assume it is impossible to do it.
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post #11 of 12 Old 02-16-2014, 01:32 PM Thread Starter
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Thank you sir

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post #12 of 12 Old 02-17-2014, 09:32 AM
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100% normal, watch levels/temp gauge but it will stop eventually. Mine will still do it if I run hard and hot then shut her off. Couple of drips, no worries.

"Grip it and Rip it!"
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