Date: Sun, 10 Mar 2002 03:10:18 +0000 From: danny <dannynopsamia-esprezzo.com> Subject: Re: Ticking noise - 9000CD
Benjamin Lau wrote: > Greetings Saab enthusiast, > > I have a late 92 Saab 9000 with 62000K on the clock. Recently I've notice a > 'ticking' noise from the engine. I'm wondering if that's normal or something > I should take note of. The noise is not loud, but just a consistent > 'ticking'. Couldn't actually hear it with the hood shut. No performance > degration noted either. Any idea?! > > There are two usual sources for the ticking. The hydraulic tappets can make a noise for several minutes after startup, especially when the car has stood for a while, and this usually quietens when the oil gets round. Secondly, the timing chain and/or camshaft balance chain can both make a sound when they wear. It's unusual for that to be the case at your mileage, and a slight sound doesn't mean impending doom. Other potential sources range from possible vacuum leaks (but you would normally notice a change in engine behaviour) or aircon components, if your car has them. Nothing serious in all probability - where is the noise coming from? -- Regards, Danny http://www.gaggia-espresso.com (a purely hobby site) http://www.dannyscoffee.com (UK advert for my mobile espresso service) swap Z for above characters in email address to reply
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