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Old 07-29-2010, 03:53 PM   #1
jwhiz27's Avatar
Join Date: Jun 2009
Location: rantoul illinois
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ticking under the hood

Have a ticking noise and I can't tell where it is coming from it goes away once temp hits 210 and stays there. But man its loud at start up. Some days it doesn't happen some days just a bit but yesterday it was really loud since it is intermitent I don't think its a rod. But what else could it be. Oh its an 02 sport with the 4.0 thanks hopefully all you smart people will reply.

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Old 07-29-2010, 04:06 PM   #2
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lifter or injector. rare case piston slap.

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Old 07-29-2010, 04:48 PM   #3
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What's the best way to diagnose that.
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Old 07-29-2010, 05:35 PM   #4
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Location: Evansville, IN
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Sounds like an exhaust leak to me. Be it a loose manifold bolt or possibly a small crack somewhere in the manifold.
2000 Jeep Wrangler Sport
4.0L / 5spd
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Old 07-29-2010, 05:40 PM   #5
Join Date: Jul 2010
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Have an 87 yj that used to do that ended up being the back lifter. seems it worked loose I tightened it back down and bye-bye tick.
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Old 07-30-2010, 12:52 AM   #6
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my tick comes from the camshaft position sensor , but I don't think the 02 has that.
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Old 07-30-2010, 12:56 AM   #7
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My 2008 does that. When i am driving in high gear.And i give it some gas is when i hear it the most.

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