Mechanical Oil Pressure Gauge, - does it need to be bled? |
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Mechanical Oil Pressure Gauge, - does it need to be bled? |
Kansas 914 |
Aug 26 2014, 08:52 AM
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#1
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Advanced Member Group: Members Posts: 2,999 Joined: 1-March 03 From: Durango, Colorado Member No.: 373 Region Association: Rocky Mountains |
I have a VDO oil pressure gauge in the center console gauge cluster. It is a mechanical gauge - oil line from the sending unit location on the top of the engine to the back of the gauge. I noticed this weekend the line near the gauge is full of air and only a little bit of oil in the line. Should I "bleed" the line somehow. If so how is that done?
Can I just open the line at the gauge and keep it higher than the sending unit area so the air will rise? Thanks in advance! |
76-914 |
Aug 26 2014, 09:06 AM
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#2
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,508 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
Air is OK. Doesn't change the indicated pressure reading.
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00r101 |
Aug 26 2014, 09:21 AM
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#3
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Newbie Group: Members Posts: 17 Joined: 24-May 12 From: United States Member No.: 14,476 Region Association: MidAtlantic Region |
Air is OK. Doesn't change the indicated pressure reading. Ahhh, My high school physics says that a gas is compressible but a liquid is not as much. So air in the line will be compressed a bit as oil pressure changes. But whether it will make a huge diff in the oil pressure reading I do not know. Air in the line will start off at 14.7 psi so how much it will compress at say 60 psi i might be minimal |
SLITS |
Aug 26 2014, 02:12 PM
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#4
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
Air is OK. Doesn't change the indicated pressure reading. Ahhh, My high school physics says that a gas is compressible but a liquid is not as much. So air in the line will be compressed a bit as oil pressure changes. But whether it will make a huge diff in the oil pressure reading I do not know. Air in the line will start off at 14.7 psi so how much it will compress at say 60 psi i might be minimal Oh yeah! And when you hook up the gauge and the line is filled with air, it will still read ZERO. If sea level air pressure were a consideration, the gauge would read 14.7 psig in the package. |
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