Ruth and Brian Posted June 15, 2019 Report Share Posted June 15, 2019 Hello, does anyone know if someone has a functioning Dual manifold pressure/ fuel flow gauge for a 78 M20J? We will do upgrades later, it need one now. Just bought this aircraft, but the fuel flow gauge is jumping all over. Ruth and Brian Quote Link to comment Share on other sites More sharing options...
mike_elliott Posted June 15, 2019 Report Share Posted June 15, 2019 Fuel pressure fluctuating on an IO360 may not be the guage, but could be an air leak in the fuel selector, a pin hole in the mechanical pump diaphram, or another source of air. Best make sure here. Does it stabilize when you put on the electric pump? If so, suspect a new mechanical pump is in your future. Most mechanics fear this job, but it really isnt as bad as your typical cezzna mechanic will make it out to be. Quote Link to comment Share on other sites More sharing options...
Ruth and Brian Posted June 15, 2019 Author Report Share Posted June 15, 2019 Thanks. maybe we will check it out further. Brian and Ruth Quote Link to comment Share on other sites More sharing options...
mike_elliott Posted June 15, 2019 Report Share Posted June 15, 2019 1 minute ago, Ruth and Brian said: Thanks. maybe we will check it out further. Brian and Ruth You should. 1 Quote Link to comment Share on other sites More sharing options...
EricJ Posted June 15, 2019 Report Share Posted June 15, 2019 I have this one available. Came out of my 77J last summer when the EDM900 went in. PM me if interested. Quote Link to comment Share on other sites More sharing options...
Ruth and Brian Posted June 15, 2019 Author Report Share Posted June 15, 2019 Thanks. We will talk to our mechanic. Quote Link to comment Share on other sites More sharing options...
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