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Old 12-01-2009, 02:26 PM   #1
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Ticking noise while warming up

I know this seems to be a common problem. Had my mechanic check it, they were unable to find any exhaust leaks or duplicate the ticking noise. The problem goes away after the engine gets to normal operating temperature. I have been noticing lately there is a small puddle of water in my parking space after I pull away in the morning after I've been warming her up for about 5 minutes - could this this be the result of my operating the heater and nothing to worry about?

I can live with the ticking since it goes away after a few minutes, just want to make sure I'm not ignoring signs of a possible bigger problem.

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Old 12-01-2009, 04:04 PM   #2
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what motor do you have? is it water on the ground or coolant? the 4.0 is known for a valve tick and it is nothing to worry about, sometimes mine does it to but only for a few seconds on startup.

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Old 12-01-2009, 04:46 PM   #3
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The phantom valve tap of the 4.0 is well documented. Mine does it warm, cold or otherwise. If it's running, it's tapping. Always has, always will. Could it just be the metal expanding? How loud is this ticking?

The water could simply be the moisture from your exhaust pipe. I see cars on cold mornings with water trickling out the tail pipes. I know that rusted exhausts are often the result of a lot of short trips, as the exhaust doesn't get or stay hot enough to vaporize it all, and it just sits in there. To be sure though, after you pull out, stop and check out what's on the ground. Touch and smell it. If it's just water, you're fine. If it's got antifreeze, you may have a problem. If it's oil, well, duh, and if it's petrol, get that checked out right away. My neighbor has a Grand Cherokee that sits for weeks on end. The squirrels chewed the fuel line. His wife took it to work one day and wound up needing a tow. Fuel leaks can be hazardous to your and your jeeps well being.
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Old 12-01-2009, 06:11 PM   #4
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You'll also leave a puddle if you run your defroster...it's condensation dripping down from the evaporator. When you run your defroster, your a/c compressor runs.
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