1968 ct90 smoker

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1968 ct90 smoker

maltaman
I have a ct90 that is smoking, burning oil.  Are there any valve seals on the valves on these ct90?  I have a 1968 and a 1970 and they both smoke, burn oil.  From the head gasket set it looks like there are no valve seals like on other Honda engines, looks like just an O ring.  Any suggestions???

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Re: 1968 ct90 smoker

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Some did, some did not. Check put this parts diagram.
https://www.partzilla.com/catalog/honda/motorcycle/models-with-no-year/ct90k2-a/camshaft-valve
With a leaking valve guide seal, the engine will just puff some smoke on startup. If it is smoking all the time you need a rebuild. Bore cylinder with new piston and rings and a valve job maybe requiring new valves and guides. I do machine shop work specializing in motorcycle engines, if you need it done please contact me,
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