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M14P Fluctuating Oil Pressure

 
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1906



Joined: 30 Nov 2018
Posts: 58
PostPosted: Sat Sep 07, 2019 5:06 am    Post subject: M14P Fluctuating Oil Pressure Reply with quote
https://youtu.be/6PmEsoJ2PN4

It does this on the ground and in flight, has done it since purchase some ~30 flight hours ago. New hoses, new oil change and new tri-gauge tested, same thing. Oil pump, pressure sender or another issue?

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Yakjumper



Joined: 28 Nov 2016
Posts: 21
Location: Germany
PostPosted: Sat Sep 07, 2019 5:59 am    Post subject: Re: M14P Fluctuating Oil Pressure Reply with quote
Did you check the voltage supply / alternator ?
My beacon causes some instruments to pulse due to voltage drop. On idle the oil pressure drops due to low voltage of the alternator.
This looks more like an electrical problem

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1906



Joined: 30 Nov 2018
Posts: 58
PostPosted: Sat Sep 07, 2019 8:39 am    Post subject: Re: M14P Fluctuating Oil Pressure Reply with quote
This is a 55, no lights on it. I think the electrical system is OK. When I first start it up, it stays steady above 5 as well.

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wlannon(at)shaw.ca
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PostPosted: Sat Sep 07, 2019 9:32 am    Post subject: M14P Fluctuating Oil Pressure Reply with quote
While this may be an elec. problem with the transmitter there is another
possibility to consider.
If the "oil in" hose or fittings have developed a small leak this could be
sucking air and causing the fluctuation. In this case the indication would
likely be fine immediately after starting.

Walt

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