Milky oil, loss of antifreeze - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums
 
LinkBack Thread Tools
post #1 of 11 (permalink) Old 06-22-2011, 07:05 PM Thread Starter
Junior Member
 
Join Date: Jun 2011
Location: Mount Pleasant IA
Posts: 16
Thumbs down Milky oil, loss of antifreeze

I have an 04 yfz. It just started leakin antifreeze into my oil. I have no visible leaks. I know it could be either my water pump seals or a head gasket. If its a water pump or oil seal shouldnt I be getting one or the other out the seep hole? This is the first time I've had this issue with this wheeler and have no idea. Any help is appreciated.
04-450 is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old 06-22-2011, 07:19 PM
Senior Member
 
1fast06yfz's Avatar
 
Join Date: Jul 2009
Location: McCallsburg, Iowa
Posts: 1,520
sounds more like a blown head gasket

06 yfz450-Gibson-PEP ZPS
stroker sb 13.75 cp ported head
Hot cams Intake and stock exhaust
Rossier exhaust
Sredrum 42.5mm carb
FCI Jetting 175m 45p 3 1/2th clip 2 turns
Kick start
Team Fat Boy Racing
1fast06yfz is offline  
post #3 of 11 (permalink) Old 06-22-2011, 07:27 PM
Senior Member
 
Join Date: Dec 2010
Location: 541 area
Posts: 176
There are 2 waterpump seals. It would be the back seal that is leakin on yours more than likely. The back seal seals out the oil from getting into coolant
yfztrickster is offline  
post #4 of 11 (permalink) Old 06-22-2011, 07:30 PM Thread Starter
Junior Member
 
Join Date: Jun 2011
Location: Mount Pleasant IA
Posts: 16
If the oil seal is bad wouldnt that allow oil to make it to my seep hole?
04-450 is offline  
post #5 of 11 (permalink) Old 06-22-2011, 07:35 PM
Senior Member
 
Join Date: Dec 2010
Location: 541 area
Posts: 176
It could also be a headgasket but it is alot easier to pull the water pump apart than the head to find out where the problem is.
yfztrickster is offline  
post #6 of 11 (permalink) Old 06-22-2011, 07:38 PM Thread Starter
Junior Member
 
Join Date: Jun 2011
Location: Mount Pleasant IA
Posts: 16
I have my water pump apart and the outer pump seal out. How do I go about getting the impeller shaft and oil seal out?
04-450 is offline  
post #7 of 11 (permalink) Old 06-22-2011, 07:48 PM
Senior Member
 
Join Date: Dec 2010
Location: 541 area
Posts: 176
Take the next cover off.
yfztrickster is offline  
post #8 of 11 (permalink) Old 06-22-2011, 07:57 PM Thread Starter
Junior Member
 
Join Date: Jun 2011
Location: Mount Pleasant IA
Posts: 16
I see what youre talkin bout now. Didnt see it before. Thank you very much. HOPEFULLY that is my problem.
04-450 is offline  
post #9 of 11 (permalink) Old 06-23-2011, 11:30 PM
Police Patrol
 
climb-101's Avatar
 
Join Date: Oct 2007
Posts: 3,873
could be a cracked cylinder, that is the the only time i have ever had water in my oil. never from a headgasket but it could happen

If everything seems like your in control, your not going fast enough
ITS A MMAD WORLD
climb-101 is offline  
post #10 of 11 (permalink) Old 06-23-2011, 11:36 PM Thread Starter
Junior Member
 
Join Date: Jun 2011
Location: Mount Pleasant IA
Posts: 16
A cracked cylinder should make it run like crap though. Mine runs great with the exception of gettin antifreeze in the oil.
04-450 is offline  
post #11 of 11 (permalink) Old 06-24-2011, 12:15 AM
Junior Member
 
Join Date: Jun 2011
Posts: 14
Highly doubt its your water pump seal because there is an oil seal behind it and even if both seals failed coolant would never make it into your lower end because it would all drain from your wep hole in the pump. Blown head gasket is possiable but also could be the o-ring between your clutch cover and case half just above your counter balancer gear. Its the size of a nickel and has a dowl pin through it. The heat causes this o-ring to become brittel and crack.
kingkingbrap is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X 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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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