running hot - Sportbike Forum: Sportbike Motorcycle Forums
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 11 (permalink) Old 10-18-2009, 01:47 PM Thread Starter
 
Join Date: Sep 2001
Posts: 5
running hot

i have an 03 zx12r that is running hot.
Ihave already checked for air. and that the resevoir has fluid in it can anyone
help
Robert Ridgely is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old 10-18-2009, 09:58 PM
 
Join Date: Jun 2001
Posts: 1,992
Has the coolant ever been changed? Coolant does degrade, as it picks up impurities from the engine. Also check that your fans are running. A blown fuse would allow it to overheat. Finally, and maybe firstly, check that your radiator is clean. A thin layer of dirt can impact it's ability to exchange heat. If none of that fixes it, then we go to phase 2.

Also, can you define "Running hot?"
Kevlar7R is offline  
post #3 of 11 (permalink) Old 10-19-2009, 03:29 AM Thread Starter
 
Join Date: Sep 2001
Posts: 5
running hot

yes i did check all of those things and coolant has been changes and also added water wetter
Robert Ridgely is offline  
 
post #4 of 11 (permalink) Old 10-20-2009, 03:47 PM
 
Join Date: Jun 2001
Posts: 1,992
How hot is it running?
Kevlar7R is offline  
post #5 of 11 (permalink) Old 10-20-2009, 05:00 PM Thread Starter
 
Join Date: Sep 2001
Posts: 5
its been running about at the 3/4 mark and goes up when stopped
Robert Ridgely is offline  
post #6 of 11 (permalink) Old 10-20-2009, 05:56 PM
Strength and Honor
 
kanwisch's Avatar
 
Join Date: Oct 2002
Location: Central IN
Posts: 6,144
My ride runs 160/70/80F in 50/70/90F degree weather. When stopped it will go up past 200F when the fan kicks in, but its been over 212F before. That's normal. Are you sure you have a problem? Where is the "red" on your gauge relative to 3/4?

SportbikeWorld Supermoderator

Dragging knee is for the track, and dragging tail is for the lot. --Kane Friesen

When you're in a car, you're watching a movie; when you're on a bike, you're in the movie. --Robert Pirsig

Identity theft is not Fun
kanwisch is offline  
post #7 of 11 (permalink) Old 10-21-2009, 03:56 AM Thread Starter
 
Join Date: Sep 2001
Posts: 5
not sure on the temps but noticed that it got hotter as i was riding at about 70mph and it was in the 60,s F in the past it always stayed in the mid range on the guage. i would say it is 2 lines from the red
Robert Ridgely is offline  
post #8 of 11 (permalink) Old 10-21-2009, 05:24 AM
Strength and Honor
 
kanwisch's Avatar
 
Join Date: Oct 2002
Location: Central IN
Posts: 6,144
Well, one thing you might do is ensure the system is as full as it can be. If there's quite a bit of air in there it allows for expansion and thus higher temps. Kevlar had the most routine suggestions.

So here's an idea I really hate to suggest. On my old car, the coolant temps would go very high. Turns out that the exhaust header gasket was leaking into my coolant, effectively blowing exhaust gases into the cooling system. Now its not clear to me that's a possibility with a bike. What I'd expect to see is that after getting the bike nice and hot if you come to a stop the temp should rise pretty darn quickly. Any dealer should be able to do a test to determine this, or if you're handy you could do it yourself. Drain the system, pressurize it and monitor the pressure for any loss.

SportbikeWorld Supermoderator

Dragging knee is for the track, and dragging tail is for the lot. --Kane Friesen

When you're in a car, you're watching a movie; when you're on a bike, you're in the movie. --Robert Pirsig

Identity theft is not Fun
kanwisch is offline  
post #9 of 11 (permalink) Old 10-21-2009, 01:28 PM
Registered User
 
97yzfinwyo's Avatar
 
Join Date: Sep 2003
Location: glenrock, wy 82637
Posts: 526
Send a message via AIM to 97yzfinwyo Send a message via Yahoo to 97yzfinwyo
have you ever noticed fluid coming out of it? I had a radiator cap that the seal detiriated and was leaking out under pressure
97yzfinwyo is offline  
post #10 of 11 (permalink) Old 10-21-2009, 03:35 PM Thread Starter
 
Join Date: Sep 2001
Posts: 5
thought about leak testing it. i did fail to mention that the bike has set for awhile. and i have not seen any fluid leaks or sign of any. think i am going to check the thermostat next
Robert Ridgely is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Sportbike Forum: Sportbike 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