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Reply to "Valve in new engine not seating"

I removed the spring and inspected the valve and the seat, and it looked perfect.  Next I put a thin layer of blueing paste on the valve, pushed it down in the seat, and removed the valve. The paste that transferred to the seat looked perfect as well.  I then cleaned off the blueing, pushed the valve down and filled the chamber with gasoline.  No leaks.  Only the weight of the valve is holding it down.

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