Jump to content

  • Follow us:

  • Facebook
  • YouTube
  • Twitter
  • Google+
  • Instagram
  • RSS Feed
  • Google+

Related Garage


Yamaha YZ450F (2004)

Owner: 1trackmind
Added on November 29, 2016

Related Reviews

Yamaha YZ450F 2003

Last review by Garrett Canada
* * * * -

Yamaha YZ450F 2013

Last review by Ride_Flip_Repeat
* * * * -

Yamaha YZ450F 2016

Last review by crash220
* * * * -

Yamaha YZ450F 2005

Last review by 2fast4luv
* * * * -

Yamaha YZ450F 2014

Last review by Gode
* * * * -
- - - - -

Oil in coolant

  • Please sign in to reply

1 reply to this topic
  • Dubbyueffohh

    TT Member

28 posts
Location: Arkansas

Posted September 13, 2016 - 03:49 PM

Okay I have not gone to look at the bike yet. Just tossing around a few things. My good friend says he's is getting oil into his coolant and could see it rainbow on top and oil filming on the cap. He says that there is no coolant getting into his oil. I plan to go about compression and leak down for a possible head gasket issue and double check his symptoms. Also has anybody had oil get into their coolant via water pump oil seals? Or have this problem?

  • grayracer513
42,862 posts
Location: California
Garage View Garage

Posted September 14, 2016 - 11:44 AM

Under any sort of normal circumstance, it's impossible for oil and coolant to mix in either direction via the water pump seals because there's an escape port (the "weep hole") in a gap between them expressly for the purpose of preventing exactly that. 


If oil is mixing into the coolant with no signs of water in the oil, it's probably a head gasket problem (system oil pressure leaking along the gasket surface to a coolant passage).



Related Content


Is it worth it? (Cam and High compression piston) by macgi77

Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies

Thinking about Yamaha 250... by Arctic Pride

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies

Yamaha YZ450F 2017 by Chris.GVS

Yamaha YZ450F 2017
  • - - - - -
  • 0 reviews

100 hrs on 2014 yz450f, shim valves or replace them? by ttr230rider6

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  79 replies

YZ450F 03 Sparks driving me crazy by SirAttard

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users


Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.