This is topic problems with oil pressure gauge in forum Tech Talk at Northern California Ford Owners  .


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Posted by 9cobrasvt8 (Member # 11078) on :
 
So i had an issue after putting in a mechanical oil pressure gauge, my pressure was reading low, well i figured out i have air in the line, is there anyway to get it out without disconnecting line with car on? Or is that the only way to do it?

[ 2014-09-01, 05:29 PM: Message edited by: 9cobrasvt8 ]
 
Posted by Tom Renzo (Member # 13165) on :
 
If by chance you have a mechanical gauge in the passenger compartment that works by having a hose connected to the engine and gauge i would not use that in my car. That can cause serious issues if the hose breaks in the engine compartment and sprays hot oil all over the place. use a gauge that is electric and has a sender on the block for safety. just me

But a mechanical gauge does not have to be bled.

[ 2014-09-01, 06:39 PM: Message edited by: Tom Renzo ]
 
Posted by 4IDFOX (Member # 9921) on :
 
Like Tom said, the air does not matter.

How much pressure is low ?
 
Posted by 9cobrasvt8 (Member # 11078) on :
 
quote:
Originally posted by 4IDFOX:
Like Tom said, the air does not matter.

How much pressure is low ?
Well when i first turn car on after it idles to running temp it says 20-22 but when i drive somewhere and let it idle before i turn it off it goes down to 5 or so, but my stock gauge is working fine
 
Posted by Tom Renzo (Member # 13165) on :
 
One of them is wrong. Check it with a known good gauge like a Snap On one. They are 2% accurate and i would find out which gauge is correct. Either way your pressures are a bit low which ever gauge is correct.
 
Posted by JZTRK (Member # 7641) on :
 
cold good pressure
hot low pressure check worn rod/main bearings
 
Posted by NK2186 (Member # 12319) on :
 
quote:
Originally posted by JZTRK:
cold good pressure
hot low pressure check worn rod/main bearings
also cam bearings^
 
Posted by Marks93 (Member # 11130) on :
 
quote:
Originally posted by Tom Renzo:
One of them is wrong. Check it with a known good gauge like a Snap On one. They are 2% accurate and i would find out which gauge is correct. Either way your pressures are a bit low which ever gauge is correct.
2% accurate?? Holy cow, I wouldn't buy one of those!! [Razz]
 




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