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ls 3.9 check this out

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tecanic1

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among doing all the diesel/i do all the engine work on gas to ..but anyways have a ls with a 3.9 and 3k on it ..story is just driving along then started to skip and rattle ... diag was pcm

failure codes and per pced to replace pcm

did so started and codes are now gone but still skipping and rattling cylander five missing

remove spark plug and found tip was damaged

looked in side hole with flash light and you

can see the rings on the piston ....thats right

the piston was sideways in the bore ..i have seen some pretty destroyed engines but this takes the cake ... it realy did sound that bad running

yes it rattled but it sounded like a heat sheild minus the smoke that was pouring out the tail pipe ..anyways just a little story of just driving along and it just started to skip.. /forums/images/%%GRAEMLIN_URL%%/banghead.gif

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