Almost no oil on intake valve rocker arm plenty on exhaust

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Almost no oil on intake valve rocker arm plenty on exhaust

This is a discussion on Almost no oil on intake valve rocker arm plenty on exhaust within the Chinese/Import Minis - General Discussion forums, part of the General Talk category; Hi all, I have Almost no oil on intake valve rocker arm but plenty on exhaust valve rocker. When I remove the valve covers for ...

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Thread: Almost no oil on intake valve rocker arm plenty on exhaust

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    Almost no oil on intake valve rocker arm plenty on exhaust

    Hi all,
    I have Almost no oil on intake valve rocker arm but plenty on exhaust valve rocker.
    When I remove the valve covers for intake there is hardly any sign of oil touching in it. Seems very dry.

    But the cover for exhaust is full of oil.

    So my oil pump is working oil is pumped to head but it's not lubrication intake rocker.

    Engine in question is ducar dj 154fmi your from scrap yard.

    I have another Chinese 88cc honda 70 clone and when intake valve cover is removed oil is squirting pretty fast. But on this ducar hardly few squirts that too at rpm above 5k.


    Help what could be wrong?
    I cleaned the plate on head just above spark plug and replaced its gasket and nothing is blocked there.

    Alao can someone share lubrication system diagram of these chondaz?

    Sent from my Nexus 5 using Tapatalk

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    Bump

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    Some of these engines require restrictor plates on the cam so it pressurizes oil a bit. It is a little cover that bolts on top of the cam gear that fits tightly against the bolt holding that cover on. My guess is that the issue isi there or in the right side cover where the oiling hole is blocked or restricted to the top rocker. Poke it through with some wire.
    lkhangee likes this.

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    Quote Originally Posted by fatcaaat View Post
    Some of these engines require restrictor plates on the cam so it pressurizes oil a bit. It is a little cover that bolts on top of the cam gear that fits tightly against the bolt holding that cover on. My guess is that the issue isi there or in the right side cover where the oiling hole is blocked or restricted to the top rocker. Poke it through with some wire.
    I did cleaned all oil passages in the cam shaft cover plate so nothing is blocked all things seems factory fitted in that plate.

    However I bought this engine in scrap.
    I m not sure of the camshaft cover belongs to this bike or not.

    The boss in the plate that puts oil in the camshaft is shorter then what is available on most Chinese bikes.

    Could it be that it's shorter and out is dribbling instead of pushing into the camshaft?

    I heard long cam vs short cam

    http://mefast.com/Schematics/70ccCam...sShortCam.html

    I might order one with taller boss if that's the issue.

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    I bought a new camshaft cover but out was different. It's boss was too tall and the cover was sticking out.

    I m at loss why oil is not being pumped to camshaft?

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