There is a recall out on a limited number of
4.2 engine in 2002. The cylinder sleeves break and cause all sorts of havoc. We got one in the other day and I took some pictures.
This picture shows the broken piece of the sleeve lying on top of the cylinder block It should be down inside that cylinder. Note all the chunks of upper piston land lying around and in the other cylinders.
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Closer picture of the "busted up" piston. Depth perception is a bit hard in this photo, but if you look closely, you can see that the upper part of the piston is gone.
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Where the "upper" ring managed to get to.
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Different angle shot of the broken sleeve piece.
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Nice shiny new engine going into the vehicle today. That old engine had 100K kilometeres on it before it broke.
Ian