Is oil and smoke normal on the crankcase breather hose
10-06-2021, (Subject: Is oil and smoke normal on the crankcase breather hose ) 
Post: #1
Is oil and smoke normal on the crankcase breather hose
04’ cm870.Is it normal?


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10-06-2021, (Subject: Is oil and smoke normal on the crankcase breather hose ) 
Post: #2
RE: Is oil and smoke normal on the crankcase breather hose
CM870's do not have a crank case filter to help collect oil fumes like newer model engines do. The crank case fumes vent directly into that tube.

How much oil get out is totally dependant on how old the engine is and how much blo-by there is.
ref: http://rawze.com/forums/showthread.php?t...22#pid9322


User's Signature: ->: What I post is just my own thoughts and Opinions! --- I AM Full Of S__T!.
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 Thanks given by: Redland1
10-06-2021, (Subject: Is oil and smoke normal on the crankcase breather hose ) 
Post: #3
RE: Is oil and smoke normal on the crankcase breather hose
(10-06-2021 )Rawze Wrote:  CM870's do not have a crank case filter to help collect oil fumes like newer model engines do. The crank case fumes vent directly into that tube.

How much oil get out is totally dependant on how old the engine is and how much blo-by there is.
ref: http://rawze.com/forums/showthread.php?t...22#pid9322

Thanks Rawze. I don’t know why the pic is upside down lol.
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10-07-2021, (Subject: Is oil and smoke normal on the crankcase breather hose ) 
Post: #4
RE: Is oil and smoke normal on the crankcase breather hose
(10-06-2021 )Rawze Wrote:  CM870's do not have a crank case filter to help collect oil fumes like newer model engines do. The crank case fumes vent directly into that tube.

How much oil get out is totally dependant on how old the engine is and how much blo-by there is.
ref: http://rawze.com/forums/showthread.php?t...22#pid9322

I got to thinking about this some more and realized that I was only seeing a little smoke come out of the hose every once in a while and a little oil residue but now it’s constant smoke and more oil.What could have changed?
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10-07-2021, (Subject: Is oil and smoke normal on the crankcase breather hose ) 
Post: #5
RE: Is oil and smoke normal on the crankcase breather hose
Post a video of what your seeing


User's Signature: Warranty??? Yeah right, I am the warranty!!!
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 Thanks given by: Redland1
10-07-2021, (Subject: Is oil and smoke normal on the crankcase breather hose ) 
Post: #6
RE: Is oil and smoke normal on the crankcase breather hose
https://imgur.com/a/AMKUoZI
Not a very good video but once I turn on the flashlight you can see the smoke towards the bottom.
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10-07-2021, (Subject: Is oil and smoke normal on the crankcase breather hose ) 
Post: #7
RE: Is oil and smoke normal on the crankcase breather hose
Looks a little excessive. Do this and see what you get

https://youtu.be/-Og4jCM6Rfg

Could be time for an inframe.


User's Signature: Warranty??? Yeah right, I am the warranty!!!
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10-08-2021, (Subject: Is oil and smoke normal on the crankcase breather hose ) 
Post: #8
RE: Is oil and smoke normal on the crankcase breather hose
https://imgur.com/a/K5FVWXe

Here’s a daytime video.The smoke is a little harder to see on this one but when I move the camera closer you can see it.
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10-08-2021, (Subject: Is oil and smoke normal on the crankcase breather hose ) 
Post: #9
RE: Is oil and smoke normal on the crankcase breather hose
Personally I don't see anything alarming


User's Signature: Warranty??? Yeah right, I am the warranty!!!
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