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Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months 200 1990

posted by OwenF on Tue May 18 10:19 CST 2021
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last visit: Sat Jul 7 13:55 CST 2012

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In my experience- no, low oil pressure would not make the engine run rough, although they may be linked in some way.
If a failed bearing is causing excessive friction for example, but I would expect that to be very noisy.

Oil pressure of 15 psi would be enough to keep the bearings lubricated, the key thing is the sudden drop in pressure which I would associate with increased clearances somewhere in the lubrication system. Often is excessively worn bearing or oil pump.

It's not the oil pressure which prevents metal to metal contact, that's done by the oil film which 15psi should be capable of supplying.

Just my opinions of course,

Ian F

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Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
posted by Strackerjack subscriber on Mon May 17 19:34 CST 2021 >

Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
posted by OwenF on Tue May 18 01:28 CST 2021 > V
- Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
  posted by derek uk subscriber on Tue May 18 05:31 CST 2021 > V
- Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
  posted by Strackerjack subscriber on Tue May 18 09:10 CST 2021 > V
  - Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
    posted by OwenF on Tue May 18 10:19 CST 2021 > V
    - Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
      posted by Strackerjack subscriber on Fri May 21 08:07 CST 2021 > V
  - Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
    posted by someone claiming to be Volvodad on Wed May 19 17:50 CST 2021 > V

Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
posted by james_a_sousa subscriber on Tue May 18 12:10 CST 2021 > V

Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
posted by Art Benstein subscriber on Tue May 18 14:22 CST 2021 > V
- Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
  posted by Strackerjack subscriber on Mon May 24 16:48 CST 2021 > V
  - Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
    posted by Art Benstein subscriber on Mon May 24 18:15 CST 2021 > V
    - Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
      posted by Strackerjack subscriber on Tue May 25 20:22 CST 2021 > V
    - Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
      posted by Strackerjack subscriber on Tue Jun 8 09:57 CST 2021 > V
      - Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
        posted by Art Benstein subscriber on Tue Jun 8 14:36 CST 2021 > V
- Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
  posted by Strackerjack subscriber on Tue May 25 20:13 CST 2021 > V

Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
posted by Strackerjack subscriber on Fri May 21 08:24 CST 2021 > V

Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
posted by Strackerjack subscriber on Mon May 31 12:41 CST 2021 > V

Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
posted by Strackerjack subscriber on Mon May 31 13:18 CST 2021 > V

Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months [200][1990]
posted by Strackerjack subscriber on Fri Jun 25 09:35 CST 2021 > V

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Sudden shift of oil pressure from 4.5 bar to less then 2 bar over 2.5 months 200 1990