High Fuel Pressure on '48 170

Fearless Tower · Post by **Fearless Tower** » Wed Oct 05, 2011 5:20 pm

Finally did the functional check flight on 96V yesterday - )Overall, it wasn't too bad - just a couple of squawks here and there. One thing we noticed was that the fuel pressure runs fairly high at high power settings (around 4-5 PSI). Red lines per the AFM are min 1 and 6 max. Green on the gauge is 1.5-3 PSI.

I suspect that this is due to the brand new fuel pump that we installed (turned out the existing one was merely a deocration - the internals were so worn out and shot that it wasn't doing anything).

Is there a way to adjust this, or is this a common thing in '48s?

n3833v · Post by **n3833v** » Wed Oct 05, 2011 5:30 pm

With a new pump, mine runs between 4 - 5 lbs. I accept this as normal.

John

Larry Holtz · Post by **Larry Holtz** » Wed Oct 05, 2011 7:23 pm

Mine runs just above 4 pounds. As far as I know, it is the original.

Larry

Post by **GAHorn** » Wed Oct 05, 2011 9:13 pm

Fearless...before you go trying to adjust that pump... check the calibration of that 60 year old gauge.

Fearless Tower · Post by **Fearless Tower** » Wed Oct 05, 2011 9:34 pm

gahorn wrote:Fearless...before you go trying to adjust that pump... check the calibration of that 60 year old gauge.

Agreed!

The International Cessna 170 Association

High Fuel Pressure on '48 170

High Fuel Pressure on '48 170

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Re: High Fuel Pressure on '48 170

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Re: High Fuel Pressure on '48 170