Date: 6 Jun 2006 21:23:06 GMT From: Dave Hinz <DaveHinznospamcop.net> Subject: Re: Saab 900 Classic Timing chain issue
On Tue, 06 Jun 2006 22:00:33 +0100, Charles C. <c.k.christacopoulos.removeme> wrote: > 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. Right. Sounds like if you put a handful of nuts & bolts into a metal bucket and swished them around rapidly. Well, maybe not, but kinda close. You know it once you've heard it, kind of noise. I like the heat shield suggestion too, that's kind of in the neighborhood and might be it. Does it happen at just one specific RPM? > Under acceleration the chain is tensioned so it is the moment > acceleration stops that it will move. Right. > 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. Agreed. And if it was that worn, his tensioner would be more than 9mm out. I'm really interested to hear what this turns out to be.
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