6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

Oil Pressure

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Old

Sep 7, 2010 | 03:47 PM

#1

04F250PSD

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Junior User

Joined: Dec 2005

Posts: 94

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From: Duncansville,PA

Oil Pressure

I have a mechanical oil pressure gauge that I have tapped into the oil Filter cap. When I start the engine cold it will read around 90 psi and when warm around 60 psi, but when it is up to operating temp it will only read around 20 psi at idle and then back up to 60 if you give it any gas at all. My question is is this a good place to hook a mechanical oil pressure gauge to and if so are those reading correct?

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Old

Sep 7, 2010 | 04:57 PM

#2

Benchwrench

Fleet Mechanic

Joined: Jan 2007

Posts: 1,708

Likes: 7

From: Circle City

Feed line mounted on top of the cap and being that erratic, chances are there is air compressing in the line giving you false readings.

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Old

Sep 8, 2010 | 01:22 PM

#3

04F250PSD

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From: Duncansville,PA

I do not see any air in the line. Is the top of the oil filter cap a good place to read oil pressure and is the readings I am getting sound right?

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