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1991 Other Mercedes Benz Models oil pressure drop

Tiny
JUNKMAN46
  • MEMBER
  • 1991 MERCEDES BENZ
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 280,000 MILES
My 1991 mercedes sd turbo deisel has great oil pressure at startup, even at an idle. But after it warms up it barely registers oil pressure at an idle. What are the possible problems and solutions? Thanks for any help!
Friday, May 16th, 2008 AT 10:20 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
HI there,

Drop of oil pressure like tins could be caused by either worn engine bearings, faulty pump, oil pick up cracked, oil pump faulty or a pressure relief valve acting up. I would start by getting an oil pressure test done with a master gauge, then you will know exactly what is going on with the pressure.

Mark (mhpautos)
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Saturday, May 17th, 2008 AT 12:42 AM

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