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  (#1)
I'm a Rookie, How do I Wheelie?
 
Posts: 19
Join Date: May 30, 2003
June 4, 2003, 08:20 PM

Well I installed a new Radiator on my 7R today. Swapped everything over exactly from the broke radiator. Put in the 50/50 Coolant mixture. Went for a ride for 5 minutes and noticed the bike was over heating Bigtime!! Came back in the garage and heard bubbles in the coolant box What does that mean? I have it filled to the Full line. There are no leaks!

Any help is appreciated!
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  (#2)
Signed up for Track Days!
 
Posts: 240
Join Date: April 21, 2003
June 4, 2003, 08:36 PM

Go out and start your bike with the radiator cap off and squeeze the lower radiator hose gently to squeeze up any air pockets trapped inside...let it run for a few minutes to see if bubbling occurs.. Check level of coolant in the radiator before and after running... It's probably trapped air inside somewhere...
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  (#3)
Has an idiot exemption
 
Triple X's Avatar
 
Posts: 8,501
Join Date: September 29, 2002
Location: Stephens City, VA
June 4, 2003, 08:58 PM

R6R is right...sounds like trapped air.
When you fill a radiator you have to do it very slowly.


Steve
2015 Yamaha R1
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  (#4)
I'm a Rookie, How do I Wheelie?
 
Posts: 19
Join Date: May 30, 2003
June 4, 2003, 09:22 PM

Well the fan is not coming on either?? Forgot to post that before? I just re-checked all the wiring. Everything seems plugged up fine
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Posts: 1,394
Join Date: April 9, 2003
Location: Sol System
June 4, 2003, 09:34 PM

how did you fill it?
what i do is fill it up with the mixture.
start the bike.
let it idle and start circulating.
add more fluid.
rev it up to like 2k RPM and hold it for a couple of seconds.
add fluid slowly when the bubbles stop hitting the top.
keep doing that for like 3 -5 times.
for the final top off, with RPM at 2000-2500 I add as much as I can and seal the cap while it is bubbling just a bit over.
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Posts: 1,184
Join Date: October 5, 2002
June 4, 2003, 09:43 PM

The fan isn't coming on because there's no fluid running over the thermostat. It's measuring the temp of the air trapped inside which is cooler than the fluid so it's no tripping the fan to switch on. Fill'er up and you'll be okay.


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