found cause for losing manifold pressure

[SkyKing]

Just wondering if you have a Service Manual for your Skymaster? Together with those sections relating to the engines and pressurization plus the "Airplane & Systems Descriptions" in Section 7 of the POH, you could probably do much of the diagnosis on our own... but education must come first. This is the primary reason why most mechanics are unable to deal with the problem... lack of education!

SkyKing