Date: Sun, 18 Apr 2004 09:54:26 -0400 From: ma_twain <ma_twainnospamo.com> Subject: Re: Maintenance
Fred W. wrote: > "Johannes H Andersen" <johsnospamfitter_0_0_0_0_.com> wrote in message > news:40817988.19E90E31nospamfitter_0_0_0_0_.com... > >> >>Max wrote: >> >>>I thought the chain was to be replaced every 250,000km (150k miles)? >>> >>There is no fixed mileage for the chain. But should be replaced if it >>is noisy AND worn. Notice how carefully I wrote this since it is >>controversial if it need replacement when noisy. Replacing the chain >>at a dealer garage is a big and costly operation, although that should >>be factored into by the high mileage for the chain. Hence when buying >>secondhand it is important to know status. It is worth while to replace >>the sprocket wheels at the same time. >> > > Not sure if it applies directly to newer models, but early 90's 2.3L > engines, the test of the amount of wear for the chain is to remove the > tensioner (after first removing 6the pressure spring) and look at how far > extended it is. There is a spec for it which for my '92 and '93's was 11mm. > If the tensioner is extended that much or more you will want to replace the > chain. The maximum tensioner extension is a little more than this much > (maybe 15mm?) so your chain is still under tension at 11mm, but it does not > have much longer to go. > > In my '92 with questionable previous maintenance, the chain tensioner was > maxed out at 80k miles. The chain was flopping around and making a lot of > noise. I had to replace it and all the guides, as well as the sprockets and > chain for the balance shafts. > > In my daughter's '93, the tensioner was right at 11mm at 120k miles, (again, > unknown earlier maintenance) I went ahead and replaced the chain when I had > the head off for a head gasket, but I'm guessing it would have been OK for > another 50-60 k miles. > > The key is regular oil changes and not overheating the engine (which damages > the guides). > > -Fred W > This is for the 1993 and older engines. I am not sure if this applies to the 2000 models. I would suspect some changes have been made in 7 or 8 years. Anyone know for sure?
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