[Main 95 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Low oil pressure forensics Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by Don [Email] (#1099) [Profile/Gallery] (more from Don) on Mon, 14 Jun 2010 11:32:20 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

A little history, I installed a used 2.3 engine (119k) in my daughters car back in January, I had replaced the timing and balance chains and related parts, as well as having the head tested and milled prior to the install.
I replaced every seal and o-ring I came across, cleaned pan and screen.
Engine ran perfectly.

3000 miles later, flickering oil light, dropped pan, screen was clean, installed sandwich plate adapter and mechanical oil pressure gauge, 11psi at hot idle.
No knocking or strange noises. (or so I thought)

I pulled that engine over the weekend and replaced it with one that was a documented Saab warranty replacement block with a reconditioned head (valve job, new seals, pressure tested and milled) that has 28k miles on it.

Now comes the forensic part, on the pulled engine, I found the turbo to be shot, there was A LOT of play in the shaft, I can move it at least 1/4" up and down, so much that the fins had been hitting the housing (I guess my daughter has the radio too loud).
I don't know if that has anything to do with the low oil pressure issue, but now that it's mounted to an engine stand, what specific tests need to be done to pinpoint what went wrong with this engine?
When this first happened, in a previous post, most here thought rod bearings, but why/how did they fail?
What could fail in the block that could cause the turbo to die?

I want to salvage it if possible and appreciate all suggestions.


posted by 64.61.4...

• Low oil pressure forensics, Don , Mon, 14 Jun 2010 11:32:20 <-- Viewing This Message
  • Usual suspects, Stephen Goldberger, Mon, 14 Jun 2010 11:43:29
    • A few things I forgot to add, Don , Mon, 14 Jun 2010 11:49:08
  • Re: Low oil pressure forensics, John Myers, Mon, 14 Jun 2010 11:42:58
    • No visible smoke, but it used some oil.n/m, Don , Mon, 14 Jun 2010 11:56:38
      • Re: No visible smoke, but it used some oil.n/m, vikingbobby, Mon, 14 Jun 2010 15:49:02
        • Great explanation, how about this?, Don , Mon, 14 Jun 2010 16:24:38
          • drain the oil out of the intercooler, clean the pipes, jimmy, Mon, 14 Jun 2010 19:58:38
            • So the turbo could leak enough oil to cause the light, Don , Tue, 15 Jun 2010 05:34:28
              • Yes, at idle it can but in your case it is one of many., jimmy, Tue, 15 Jun 2010 08:25:29
                • 3 of 6 compressor blades broken off. DOH., Don , Tue, 15 Jun 2010 16:32:43
                  • No metal found in intercooler system?, Don , Thu, 17 Jun 2010 17:37:26
          • Re: Great explanation, how about this?, vikingbobby, Mon, 14 Jun 2010 16:36:28

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