Boiling antifreeze - Honda RC51 Forum : RC51 Motorcycle Forums
 
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 01-30-2018, 08:06 PM Thread Starter
Junior Member
 
Join Date: Jan 2018
Posts: 4
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Boiling antifreeze

I started spelling antifreeze after my bike fell over when someone bump it while on its stand. I look for any signs of leaks and canít find anything. Iíve had to add some but very little to it like four times now. Fans r running. I tried changing the cap. Did notice while pulling it apart there is sighns of dried up antifreeze around cap. Which makes me think more itís boiling but why.
Maddogsnoop is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 01-30-2018, 08:44 PM
Senior Member
 
10THbikE's Avatar
 
Join Date: Dec 2014
Location: Vacaville Ca.
Posts: 227
Mentioned: 0 Post(s)
Quoted: 40 Post(s)
Garage
Was it knocked over on the left side? Your coolant reserve tank is on that side. Maybe cracked it?
10THbikE is offline  
post #3 of 3 (permalink) Old 02-01-2018, 03:37 PM
Moderator
 
SubSailor's Avatar
 
Join Date: Oct 2008
Location: Sarasota, FL
Posts: 6,470
Mentioned: 24 Post(s)
Quoted: 89 Post(s)
Use a flashlight to check hoses to the radiator(s) for signs of coolant residue.
The hose clamps can take a set over time and allow coolant weeps, and may need to be tightened.

Also, check around the lower parts of the side cowls for coolant residue, and while at it, reach in and manually give the fan(s) a spin with your finger (engine switched off and cool, of course).
The fans should spin freely, with no signs of rubbing against the radiator.
If the fan(s) do not spin freely, or make squeaking noises, then the fan motor bearings have failed or are failing, and should be replaced.

If the fan blades are rubbing against the radiator, check if the radiator mounts are bent and straighten if needed.
Since the radiators are mounted on the sides, if the bike fell hard enough, it may have bent the radiator mounts.
And if this is the case, check the radiators for cracks in the housings or passeges.

The coolant overflow tank should not be full, but between the low and high marks.
If overfilled, it can spill through the rubber cap and down the sides.
Also, make sure the overflow tank hose to the radiator is not pinched.
Clean the area around the radiator cap, and if residue is seen afterwards, then the radiator cap may be weak and need replacing.
SubSailor is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Honda RC51 Forum : RC51 Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome