912 100 HP Low oil Pressure under power

by Robin ten Pas in 912 / 914 Technical Questions 5 years ago

I have a 300 hour 912 100 hp. When at idle ( 2000 RPM) and engine oil temp is 200F the oil pressure reads 39-40 PSI, When I increase the throttle the oil pressure drops to 10PSI. and when I go back to idle the pressure comes back to 39-40 PSI

Is this a sending unit?

Thanks in advance

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Re: 912 100 HP Low oil Pressure under power

by Bill Hertzel » 5 years ago

Bill Hertzel

13 1.95k 7.98k

Does it behave normally before it gets Hot?

What are you using for a DISPLAY?

Analog or Digital?

What Aircraft?

Bill Hertzel
Rotax 912is
North Ridgeville, OH, USA
Clicking the "Thank You" is Always Appreciated by Everyone.

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Re: 912 100 HP Low oil Pressure under power

by Tyler Hathaway » 5 years ago

Tyler Hathaway

3 478 1.39k

This may seem like a silly question but... how is your oil level before start-up?

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Re: 912 100 HP Low oil Pressure under power

by Robin ten Pas » 5 years ago

Robin ten Pas

1 2 17

Thanks for your replies, The plane is CH701, MGL Stratus Gauge . Oil level is right at the full mark after burping.

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Re: 912 100 HP Low oil Pressure under power

by Garrett Wysocki » 5 years ago

Garrett Wysocki

1 572 1.45k

If it's not a problem with your sensor or wiring it could be a collapsing oil line on the suction side. If the line is collapsing some have inserted a coil spring inside of hose or Peagasus Racing has teflon oil hose all sizes are rated to 30 in-Hg vacuum service up to 130°C (266°F). Temperature range -45°C to 170°C (-49°F to 338°F).

https://www.pegasusautoracing.com/productselection.asp?Product=3490

Thank you said by: Robin ten Pas

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Re: 912 100 HP Low oil Pressure under power

by Jim Isaacs » 5 years ago

Jim Isaacs

17 319 819

Install a direct reading pressure gauge fed by braided steel lines and never again wonder what the real oil pressure is.

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912 100 HP Low oil Pressure under power

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