Date: Thu, 26 Jul 2001 22:46:10 +0100
From: "SimonJ" <>
Subject: Re: 9000 valve noise

"Gadget" <> wrote in message > Hi > I've got an '86 9000T that's just started making a big racket in the > valve train area. I had the mechanic down the street take a look and > he said that one, or more, of the valve lifters were bad. Cost?? Just > $27 > each, and all would need to be replaced. > > Talked to the local Saab mechanic and he said that it can sometimes be > fixed by adding Marvel Mystery Oil to the engine oil. Anyone out there > had this problem? Suggestions for a fix?? > > Thanks, > Jack > If it is the lifters then you will only need to replace the bad ones, not the full set. The onjly problem is finding which are bad, which is why your mechanic wants to go for the easy fix and replace all. I had a similar problem, but all the lifters were noisy, I was assured by several Saab specialists that it was virtually unknown for all the lifters to fail, and that bad lifters were all but unknown on a saab, and I ought to look elsewhere for the fault. On removing the head it was found that there was some silicone sealant in the oil supply line to the head, causing low presure, causing the tapets to go noisy. THe engine was reasembled using the same 'faulty' lifters, and has been fine since.

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