help! strange noise from bonnie and power loss - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-01-2006, 10:21 PM   #11
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Quote:
Originally Posted by XKalibuR
but who knows what happened.
I have a pretty good guess. Coolant mixed with the oil and destroyed the bearings in the engine. My guess would be a rod bearing. Either it was driven too long with coolant in the oil before it was fixed, or the contaminated oil was not sufficiently flushed when the repair was done. Did the mechanic change the oil and filter at least?

For the repair to last after the oil is emulsified takes quite a bit of effort in cleaning the engine, a lot of fresh oil, and at least two new filters before you can call it "fixed." Most mechanics don't take the time to do be meticulous here. And the result is often engine failure. It is a good reason for learning how to do it correctly yourself.

It'* really a shame. There have to be thousands of these Series II engines out there that have suffered a similar early death because of this curmmy intake manifold design. The trick in this case is to go against conventional "wisdom" and fix it with a sleeve, EGR air gap, and LIM gaskets BEFORE it leaks.
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Old 03-02-2006, 02:22 AM   #12
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I dont think he flushed it twice just once. But i wasnt thinking at the time i picked it up. I picked it up at night, drove about 4 miles. Next day I drive 20 miles to school and back, around midnight is when this happened. I was pushing it in the highway but I always do and she takes it fine..

As for doing it myself, 1. Im a full time student and part time worker so no time whatsover. 2. Im not a mechanic but an engineer so dont have that experience anyway.
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Old 03-02-2006, 09:56 AM   #13
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Quote:
Originally Posted by XKalibuR
I dont think he flushed it twice just once. But i wasnt thinking at the time i picked it up. I picked it up at night, drove about 4 miles. Next day I drive 20 miles to school and back, around midnight is when this happened. I was pushing it in the highway but I always do and she takes it fine..

As for doing it myself, 1. Im a full time student and part time worker so no time whatsover. 2. Im not a mechanic but an engineer so dont have that experience anyway.
You never know. The damage might have been done before the mechanic touched the car. Anyway, the horse is outta the barn, as they say. And, at least this should never have to happen to you again. You now know how to avoid the problem.

Re the student thing: I hear you. Been there - done that! As for the car, just think of this as another expensive part of your education.
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