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2008 Jeep Liberty Question: cylinder #3 no compression



, Southbridge, MA, August 18, 2014, 11:41

after starting vehicle it idled very rough and then stalled. Restarted and found it to be skipping and knocking. Brought it into the garage and pulled spark plugs. Did a compression test and found that #3 cylinder has zero compression. The mechanic has a feeling that it may be the valve seat or the valve face has broken off. please respond with any info that will be helpful. Also wondering if there may be a recall on the valve train?

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  • Answer #1

    August 18, 2014, 11:51

    More than likely it has dropped the exhaust valve seat out of the head and is holding the valve open.... Pretty common on the 3.7 & 4.7 engines!... No recall that I am aware of.....Has the engine ever overheated??

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