Tip & How-To about Buick Skylark
My Skylark used to make a diesel sounding noise while idling and it turned out to be a worn timing chain which I replaced myself. Some models have a timing gear instead of a timing chain and these can be very noisy as well (2.5 Iron Duke). By 80-90,000 miles you should replace the chain and or the gear set. Before you install your new chain make sure that tensioner is in the box and is compressed with a small metal clip. You will not be able to install the chain unless the tensioner is compressed. There simply won't be enough slack in the chain to reach the cam and crank shafts. While you are replacing the chain be sure to spend a couple of extra bucks and install a new timing cover seal. This seal keeps oil from leaking out of the oil pan behind the harmonic balancer. It is definitely worth the effort to put it in while it is apart.
Posted by Ryan ... on
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