Fuel Pressure Instrument

[LSaupe 123]

I would like to add a fuel pressure indicator.  Any suggestions?  Prefer to not have fuel routed into the cockpit, (i.e. use a remote sensor) something along the lines of:

http://www.pilotshop.com/catalog/inpages/issgauges7.php?recfer=11964

 

 

 

[EDMO 1078]

That's about the best price I have seen on one for remote reading.  Spruce has a direct reading Marine gauge for about $25-29 - since my fuel lines go thru the cockpit I have considered using it, but guess that might be one more place for a leak in an accident.    EDMO

[marksires 484]

I think you need the sender and the instrument, it doesn't look like the instrument comes with the sender - abour $40 for each component for a total of $80.

 

Mark

 

[Fly-n-Low 181]

You can use an isolator and run a mechanical gauge if you don't want electric. That would cost more though, but more accurate.

[nlappos 413]

There are two kinds of fuel pressure gauges, the wet and the electric.

A wet one routes the pressurized fuel to the gauge, so any leak becomes a really big problem as the leak pours gasoline on your knees! Wet gauges cost about 15 to 20 on ebay and twice as much thru aircraft houses. (http://www.ebay.com/itm/Marshall-Gauge-0-15-psi-Fuel-Pressure-Oil-Pressure-1-5-Midnight-Black-Liquid-/331519166762?hash=item4d3015092a:g:eJ4AAOxybetSAp10&vxp=mtr) 

The electric have a sender unit and an electric gauge, and cost a heap more, typically 50 to 100. And the pressure you're measuring is only a few PSI (maybe 4) so the gauge has to be a sensitive one.

Nick

[EDMO 1078]

There are two kinds of fuel pressure gauges, the wet and the electric.

A wet one routes the pressurized fuel to the gauge, so any leak becomes a really big problem as the leak pours gasoline on your knees! Wet gauges cost about 15 to 20 on ebay and twice as much thru aircraft houses. (http://www.ebay.com/itm/Marshall-Gauge-0-15-psi-Fuel-Pressure-Oil-Pressure-1-5-Midnight-Black-Liquid-/331519166762?hash=item4d3015092a:g:eJ4AAOxybetSAp10&vxp=mtr) 

The electric have a sender unit and an electric gauge, and cost a heap more, typically 50 to 100. And the pressure you're measuring is only a few PSI (maybe 4) so the gauge has to be a sensitive one.

Nick

You can always put a shutoff valve on the line leading to a direct pressure gauge in the slim chance your badly installed fittings leak (Aren't they supposed to be tested before takeoff?)   EDMO

[C5Engineer 1170]

Just curious what the value added of a fuel pressure gauge is? 

[EDMO 1078]

I don't know what pressure the 912 engines need, but for my Soob with a Holly carb, I need 2 - 6+ lbs of fuel pressure to make max performance - If the pressure gage that normally says 6 lbs falls down to 3 or 4 lbs pressure, then I need to check my filters or lines for blockage, or figure my pump is going bad, or turn on my aux pump.   If the gage says below that, then I need to find a landing spot.   EDMO

Edited 23 May 2016 by EDMO

[Av8r3400 1179]

Just curious what the value added of a fuel pressure gauge is? 

They will tell you of the health of your fuel pump and filtering system.

More practical than a flow meter. 

[EDMO 1078]

Just curious what the value added of a fuel pressure gauge is? 

They will tell you of the health of your fuel pump and filtering system.

More practical than a flow meter. 

Way to go Larry - Short and to the point...  It just don't figure your fuel usage, if you worry about that. EDMO

Edited 23 May 2016 by EDMO

[Fly-n-Low 181]

There are two kinds of fuel pressure gauges, the wet and the electric.

A wet one routes the pressurized fuel to the gauge, so any leak becomes a really big problem as the leak pours gasoline on your knees! Wet gauges cost about 15 to 20 on ebay and twice as much thru aircraft houses. (http://www.ebay.com/itm/Marshall-Gauge-0-15-psi-Fuel-Pressure-Oil-Pressure-1-5-Midnight-Black-Liquid-/331519166762?hash=item4d3015092a:g:eJ4AAOxybetSAp10&vxp=mtr) 

The electric have a sender unit and an electric gauge, and cost a heap more, typically 50 to 100. And the pressure you're measuring is only a few PSI (maybe 4) so the gauge has to be a sensitive one.

Nick

If you want to be safe, like the electronic gauge, you can spend a bit more and get one of these. That will keep the pressurized fuel out of the cockpit and still have a mechanical gauge. BTW this is a good price!!!

 

http://www.ebay.com/itm/Auto-Meter-Fuel-Gauge-Isolator-2650-425D-see-list-of-gauges-/322106577782?hash=item4aff0c5376:g:qgMAAOSw1KxXNNZ4&vxp=mtr

Edited 23 May 2016 by Fly-n-Low

[LSaupe 123]

Great feedback.  Many thanks!