My wifes car has 130, 000 miles on the odometer. We change the oil with Mobile 1 on a regualr basis. The car seems to be ok. When should that chain be replaced?
- posted
19 years ago
My wifes car has 130, 000 miles on the odometer. We change the oil with Mobile 1 on a regualr basis. The car seems to be ok. When should that chain be replaced?
Next time you have the valves adjusted it's an exta 5 minutes to check the chain stretch. If t's above a certain amount (10 degrees off the top of my head, don't take that as an authoritative figure) then repace the chain. I usually replace the tensioner too, cheap insurance.
Unlike cars with timing "belts" a timing chain does not have a finite service interval, but as said, it and the chain tensioner/rails, should be checked. Usually, the tensioner starts to fail long before the chain stretches out of spec. A good test is to listen to the engine on start up. If you hear a chain rattle at startup that disappears when the oil pressure builds up a few seconds later, that's a classic sign that the tensioner should be serviced.
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