Cylinder Head Problems...How? -
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Unread 03-17-2012, 05:22 PM   #1
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Cylinder Head Problems...How?


I am the original owner of a 2004 Liberty with the 3.1 engine. It has 80k miles on it. Oil changes always between 3-5k miles. Coolant was flushed around 50k and always kept full. Never taken off road, never over heated, mostly 30 min to 1 hr trips. Parked inside during winter.

Yesterday the engine light came on, cylinder 2 was misfiring. I changed the spark plugs, swaped ignition coils and the problem continued. Turns out there was antifreeze in the cylinder. I don't believe cracked heads and gaskets are common on this engine.

What could have caused this problem since I'm sure it never overheated?

What would you expect roughly parts and labor for a gasket replacement? What if one head needs replacement?

I'm concerned about having the problem arise again because I just don't understand how it happened in the first place

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Unread 03-17-2012, 06:09 PM   #2
30mm @ 70/sec
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2003 TJ Wrangler 
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Location: Warrensburg, MO
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Parts fail occasionally. It just happens through use at time with no fault on your part.

Hopefully its just the gasket, I'd get the head checked while you have it off.

If its just a gasket, you'll probably be out a few hundred bucks. The gaskets are cheap, but replacement is somewhat labor intensive compared to many jobs.

Expect significanty more for a new head.
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Unread 03-17-2012, 09:24 PM   #3
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What kind or color of coolant was put back in when it was flushed at 50k?
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Unread 03-19-2012, 11:20 AM   #4
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Sounds like a blown head gasket or warped head, either way will cost a ton... A gasket costs about $30-60, oil and coolant about $50.... Hoses, belts, misc items that might need changing about $50... Labor for someone to do the job, like $1,000-$1,500... A new or remanufactured head about $300... But if coolant only ended up in the cylinder and not all over the ground may just be a blown gasket...
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