Honda Discussions about Honda ATVs.

400ex oil prob

Thread Tools
 
Search this Thread
 
Old Mar 8, 2009 | 12:51 PM
  #1  
justjumpit's Avatar
Thread Starter
|
Weekend Warrior
Joined: Mar 2009
Posts: 7
Likes: 0
Default 400ex oil prob

I have engine oil coming from the air box and seems to be coming up from the crank case vent. What is causing?
 
Reply
Old Mar 8, 2009 | 01:12 PM
  #2  
Doctorturbo's Avatar
Extreme Pro Rider
GOT BOOST!
Joined: Jan 2004
Posts: 3,204
Likes: 0
Default 400ex oil prob

Only two things I can think of: (if it's a wet sump; I think it is?)

#1 Excessive oil in the crank case. (level too high)
#2 Excessive crank case pressure caused from bad rings.

While running, if you have a hurricane coming out of the breather you can bet it's #2.
 
Reply
Old Mar 8, 2009 | 01:25 PM
  #3  
justjumpit's Avatar
Thread Starter
|
Weekend Warrior
Joined: Mar 2009
Posts: 7
Likes: 0
Default 400ex oil prob

I appreciate the info. Its gotta be #2. Thanks again.
 
Reply
Old Mar 8, 2009 | 01:32 PM
  #4  
Doctorturbo's Avatar
Extreme Pro Rider
GOT BOOST!
Joined: Jan 2004
Posts: 3,204
Likes: 0
Default 400ex oil prob

No problem.
You can check my diagnosis by doing a leakdown. This will tell you whether I'm correct or not.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
XxS0ccerstarxX
Honda
0
Sep 24, 2015 11:53 PM
XxS0ccerstarxX
Polaris
1
Sep 24, 2015 05:38 PM
XxS0ccerstarxX
Honda
4
Sep 24, 2015 02:02 PM
XxS0ccerstarxX
Honda
2
Sep 22, 2015 02:40 PM
BigCam
Drivetrain, Suspension & Tires
0
Sep 16, 2015 01:53 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 12:28 AM.