Date: Tue, 6 Jun 2006 22:38:31 -0400 From: "James Rosenkranz" <fireglownospamsouth.net> Subject: Re: Saab 900 Classic Timing chain issue
"Charles C." <c.k.christacopoulos.removeme.nospamee.ac.uk> wrote in message news:4485ecdb$0$1235$db0fefd9nospam.zen.co.uk... > You can hear a slapping chain with the car stationary. Open the bonnet > (hood or whatever you call it) accelerate the engine to say 4000 revs. > > If you stop the acceleration suddenly listen for metallic noise. Repeat > and decelerate gently you should not hear a noise. > > Under acceleration the chain is tensioned so it is the moment > acceleration stops that it will move. > > If it helps at all. > > Regards > Charles > > PS. I don't think you are going to hear a worn chain as such only as a > loose chain the hits other parts anyway. Hi Charles- The metallic "pinging" has largely dissappeared after the tensioner replacement and been replaced by a rattling sound that is pretty constant regardless of RPMs. Still some trace of the pinging upon deceleration. I'm wondering if it could be the upper chain guide in the valve cover.
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