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Post by jjoshua20213 on Oct 23, 2013 16:00:01 GMT -5
You know the valve cover with the hose the always spits mists of oil. Well what if I connected it to a vacuum port on the intake manifold.
When I suck on the valve cover hose while the engine is off it creates a vacuum, so only whats vented out will go to intake.
I tried it for a few secs at idle and it worked.
Haven't tried at full throttle due to the unknowns, but at high rpm the vacuum goes down, but more air is vented out of the valve cover.
Would this interfere with the air/gas mix? Could it cause damage to any seals?
Or was this a dumb idea from the jump?
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Post by sailracer on Oct 23, 2013 16:08:52 GMT -5
No, you can't do that. What you can do though.is get a bigger fuel filter (for a lawnmower or something) and a longer peice of tubing. Attach the tube to the vent and one side of the filter and leave the other side of the filter open. TY-wrap this With the open hole facing up somewhere higher than the motor. the filter will catch the oil, and it will simply drain back in when you shut the motor off.The filter will stop the mist from making a mess all over. Or you could buy an oil-catch can. Whatever you do, block off any unused vacuum lines and fittings.
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Post by JerryScript on Oct 23, 2013 23:14:04 GMT -5
I did exactly as Alleyoop recommends a couple of weeks ago. Since then, I have no more issues with oil on my rear wheel or the CVT cover. I used an elbow connector from the vent tube to the original overflow tube, with a fuel filter on the end of it all, zip-tied to the frame just under the gas tank.
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Post by skuttadawg on Oct 23, 2013 23:33:53 GMT -5
My Echarm has a tube like that but it is plugged off . The plug has a clip to hold it on and I can remove it when I get some oil in it . It only does this if I redline it for a bit but only a sip . The oil is loaded with bubbles and I catch it with a shop rag as it does not look reusable . I then pour in a sip of oil in the crank case to keep it full .
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Post by rockynv on Oct 24, 2013 4:29:31 GMT -5
Excessive oil in the purge tube can be a sign that it is time for a valve adjustment. Before modding the system one should check the valve adjustment to ensure that you are not getting a lot of purge due to this. Also using too thin an oil and giving a GY6 too much throttle before the engine has warmed up can also cause excess purge to build up.
Excess purge is a symptom of a problem. To me one is better off taking care of the root cause than masking it with a work around however if you have a bike with bad rings or a worn cylinder adding the filter may buy you some time until you rebuild or replace.
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Post by jjoshua20213 on Oct 24, 2013 4:42:53 GMT -5
Thnx. I was going to get a catch can, just wanted to see if this would work. I know my rings are worn. I ran them hard and skipped break in.I figured rings are cheap, and I like doing the work to keep my mind fresh so why not.
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Post by skuttadawg on Oct 24, 2013 21:13:58 GMT -5
Pour in a sip of 2T oil to the gas tank to lube the rings
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Post by jjoshua20213 on Oct 24, 2013 23:28:14 GMT -5
Its not that bad of a mist, just noticeable over time and only at high rpm. My oil isn't disappearing. I have spare rings
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