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Oil In Inlet Ports


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#1 M111OWW

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Posted 05 July 2018 - 04:15 PM

Is it normal to have a very light coating of oil around the inside of inlet ports??
Just had to remove the manifold and there’s a little oil sat there..
It doesn’t burn any, zero smoke even under full load and the head has recently been fully reconditioned with new everything !! Including viton stem seals

#2 Moke Spider

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Posted 05 July 2018 - 07:19 PM

No, it's not normal, however, can I ask are you 100% sure it is Oil and is there a possibility it may have run in from elsewhere, eg, the rocker cover gasket or even the carb dashpot?



#3 Bat

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Posted 05 July 2018 - 08:00 PM

Hi,

Is it oil being sucked in from the breather system?

Cheers  :proud:​ 



#4 cal844

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Posted 05 July 2018 - 08:14 PM

Is it sufficient quantities to have come from the carb or rocker cover?

It might just be fuel or water mixed with carbon?

#5 Sprocket

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Posted 05 July 2018 - 08:45 PM

Its just fuel residue






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