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post #1 of 5 (permalink) Old 06-10-2012, 08:08 PM Thread Starter
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Rc51 blue smoke

Hello im wonder what can be if my rc is burning oil ... Everytime i stop in a trafic ligth and i rev i can see. Blue smoke coming out from the exahust im wonder if its a ring problem or valve seals... I notice is burning the Oil too .... Any idea whats it can be,, thanks
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post #2 of 5 (permalink) Old 06-10-2012, 08:35 PM
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Does it get worse if you slow down with engine braking?
The low pressure exerted on the rings during engine braking can allow oil to pass by.
If it does, then it may probably be worn or damaged rings.
If it stays fairly constant, then it may be valve stem seals.
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post #3 of 5 (permalink) Old 06-10-2012, 08:44 PM Thread Starter
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Noo it does when i rev while riding also i let my friend ride it and i can see the smoke when he speed up he said the bike didnt loose power so ...
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post #4 of 5 (permalink) Old 06-11-2012, 08:29 PM
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Might just be valve stem seals then.
You could have a shop do a compression and leakdown test to see if there's a difference in compression between the two cylinders.
If the compression and leakdown test fails, then you've got bad rings.

Last edited by SubSailor; 06-11-2012 at 08:33 PM.
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post #5 of 5 (permalink) Old 06-11-2012, 09:42 PM Thread Starter
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Allrigth i will take the bike to the shop fo a compresion test see whats up .... Thanks man and if is just valve stem seal do u have any idea the cost of be repair?
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