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Old 11-26-2015, 06:01 PM
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Hello everyone, my jeep has recently started making a ticking noise coming somewhere from the inside of the engine. At idle it is a constant ticking and as RPMs climb, the ticking accelerates. While I'm driving if I accelerate then let off the gas, as the RPMs drop there is a fluttering noise, almost like a turbos blow off valve.

It all started a few days ago when my oil light blinked on my way to school. I thought maybe I should check the oil before I leave for home.I pull the dip stick and there is nothing on it. So I borrowed half a quart of oil from a friend in the parking lot thinking that will get me home (BAD MOVE). Im pulling into the driveway and the tapping starts. So I get out and drain the oil and it's damn near empty. And I mean MAYBE 1 quart of oil came out (keep in mind I borrowed half a quart just 10 minutes earlier). I check everywhere, no leaks, oil doesn't smell burnt. All checks out. So I fill it back with oil, replace the filter and start it up. Tapping is still there.

It's only been about 800 miles since my last oil change. So where did all my oil go?? And what is this ticking?! My first thought was a stuck lifter but after using 2 oil additives and carefully listening to where the sound is coming from. I don't think it's a stuck lifter.

Thanks everyone for reading and any help is appreciated. It's a 2007 Sahara Unlimited

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Old 11-26-2015, 07:42 PM   #2
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The 3.8 is notorious for using a lot of oil, especially as they get older with more miles on them.

Do A search as there are many threads to read on the subject and some of the oil usage stories will shock you.

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Old 12-08-2015, 04:10 PM
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Hey guys, it's been almost 2 weeks and I still have the ticking. I'm starting to think it isn't a lifter as I can't hear the sound when the engine is under load. I'm no mechanic but does that maybe mean it's a bearing or something. I'll try to post a video of the sound. Thanks
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Old 12-08-2015, 11:05 PM   #4
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My 2007 had a mild ticking noise and the earlier post about 3.8's going through oil has been my experience as well. I've never had mine go as low as 1/2 quart to a quart on draining, but I would suggest checking the level every other fillup or so to add oil when it when it begins to dip below the full range. I don't know how old your jeep is or what mileage, but mine quieted down much from a good throttle body cleaning and a Seafoam top end treatment.

There are threads on the throttle body cleaning and it's an easy procedure - maybe 1/2 hour or so. Might give it a shot - I was surprised at how much crud was behind the plate, and after that + Seafoam (the intake can with the spray hose - not the gas additive), my engine was notably more quiet.

I've read other posts that warn about needing to be careful using cleaners because of the risk of having it enter the TB electronics so keep that in mind.
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Old 12-09-2015, 09:50 AM   #5
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Sounds like you may have spun a connecting rod bearing. Try to listen to the engine from under your jeep. If the sound seems to be coming from the oil pan it's the connecting rod bearing.

I just went through this a few months ago. I ended up replacing the motor.
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Old 12-09-2015, 10:12 AM   #6
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Could also be the exhaust manifold cracked which is what I tracked mine too.

Take off the heat shield on the driver side and look for cracks
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Old 02-21-2016, 01:11 AM
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Quote:
Originally Posted by cajunrice View Post
Sounds like you may have spun a connecting rod bearing. Try to listen to the engine from under your jeep. If the sound seems to be coming from the oil pan it's the connecting rod bearing. I just went through this a few months ago. I ended up replacing the motor.
Thanks a lot man, after reading your comment I listened under the engine and the sound was coming from the oil pan. Had a mechanic replace all 6 rod bearings and sound is gone! he reported that the crankshaft wasn't scoured so the problem shouldn't return! Sorry you had to replace the entire motor that really sucks. Thanks again for the advice.
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Old 02-21-2016, 10:12 AM   #8
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You might want to figure out what caused you to lose all of your oil in the first place. If you just replaced the parts that were damaged by the oil starvation and have not addressed the cause, you're likely looking at a repeat performance.
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Old 02-25-2016, 05:47 PM
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You might want to figure out what caused you to lose all of your oil in the first place. If you just replaced the parts that were damaged by the oil starvation and have not addressed the cause, you're likely looking at a repeat performance.
Very true, have been looking into it but the oil burning has stopped. haven't lost a drop in about 1,000 miles. and currently trying to fix my death wobble. I'm almost 100% sure it's not my trackbar and am trying to figure it out. Everything seems just fine under there. Buuuut that's for another thread. thanks for the advice!

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