Oil blowing thru breather tube. Tec. hmsk100 - Snowblower Forum : Snow Blower Forums
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post #1 of 13 Old 01-05-2016, 09:05 PM Thread Starter
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Oil blowing thru breather tube. Tec. hmsk100

I had carb problems i fixed that. Now i still have an oil loss thru breather tube. It leaks at high rpm, im not sure if my motor will rev over 3600 wich i assume is factory top high rpm right?(all i know is that i adjusted speed governor by the book specs.) Anyways i didnt take breather appart yet.

Any ideas whats goin on in there?
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post #2 of 13 Old 01-05-2016, 09:40 PM
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For starters make sure its not over serviced. You don't want it over the full mark.
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post #3 of 13 Old 01-05-2016, 09:48 PM Thread Starter
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good point. i forgot to say i changed the oil and put in 700 ml of new 5w20 castrol gtx. right on the top mark.
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post #4 of 13 Old 01-05-2016, 10:18 PM
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Remove the breather, and make sure the drain hole is not clogged. Then Change your oil to SAE30. It helps slow down the blow by.
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post #5 of 13 Old 01-05-2016, 11:13 PM
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Remove the breather, and make sure the drain hole is not clogged. Then Change your oil to SAE30. It helps slow down the blow by.
to add what Jackmels said, when you put the breather back in, make sure the little drain hole is facing down towards the bottom of the engine.

You need a tach to determine whether or not you're exceeding 3600 RPMs. Even though you followed the governor arm calibration procedure, the governor spring tension could be off or your governor spool may be stuck. I use a hardline inductive tach...or a sirometer when I'm in a pinch.


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post #6 of 13 Old 01-05-2016, 11:53 PM
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isnt sae 30 way to thick for winter use? it will just sit in the bottom of the crankcase and wont be circulated. i would use 10w30
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post #7 of 13 Old 01-06-2016, 12:47 AM
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0w30 or 5w30 max for winter use fellas.. it gets mighty cold up here in the North

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post #8 of 13 Old 01-06-2016, 12:41 PM
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Thanks for the Weather Bulletin. However, We are Trying to Slow down the Blow By Without Rebuilding the engine. I have found in my experience that SAE 30 will help with that.
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post #9 of 13 Old 01-06-2016, 01:16 PM
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Thanks for the Weather Bulletin. However, We are Trying to Slow down the Blow By Without Rebuilding the engine. I have found in my experience that SAE 30 will help with that.
no offense jackmels but sae 30 is like molasses at 10 degrees f. he wont have to worry about blowby at all when the engine seizes from lack of lubrication oil. i wouldnt do it. 10/30 maybe 5 / 30 preferred. remember he is in canada. its colder there for sure...

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post #10 of 13 Old 01-06-2016, 01:36 PM
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Use and Do Whatever You want. I use 30 with No Problems.
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