Ticking 4.0, Adjust Valves??? - JeepForum.com

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post #1 of 23 Old 11-29-2005, 09:08 AM Thread Starter
snowflakega11
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Ticking 4.0, Adjust Valves???

Ok this is my first post here it goes. My 2000 wrangler w/ 4.0, and 105k miles is kinda running rough well ticking to be exact, and i was thinking about adjusting the valves. I have put all types of cleaners( expect the lucas which i wanna do soon) in the gas tank, and have tryed different types of oil additives but still kinda ticks if you know what I mean. Well i have been around a few of the 4.0s and some 4.2's and they usally seem to kinda tick around 100k miles. So i was wondering if there are anyway of getting rid of that sound. Also has anyone ever adjusted the valves and if so what height should i adjust them to. Does anyone else have this same problem and know a solution to it. I don't think it's a big deal because my Dad's cherrokee did the same thing around 100K and we sold it at around 200k and still kinda ticked and ran very well. I just wanna try to get that ticking to go away. And is jeep coming out with a diesil wrangler or what!

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post #2 of 23 Old 11-29-2005, 09:27 AM
igofshn
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I have 110k on mine and it purrs like a kitten. Your lifters are hydraulic and never need adjusting. Are you sure the ticking isn't coming from yur exhaust manifold which is known for cracking?

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post #3 of 23 Old 11-29-2005, 09:34 AM Thread Starter
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I will check but i don't think so, i'm willing to try anything.
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post #4 of 23 Old 11-29-2005, 09:43 AM
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Maybe you have carbon buildup on the heads and thus the ticking. You try decarbonizing the engine? You can use Seafoam or slowly drip water down the intake.

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post #5 of 23 Old 11-29-2005, 09:47 AM
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I probably don't count, but my lifters on my 4 cyl make noise for a little, then shut up. Very annoying. I'm thinking about doing an adjustment, but I wouldn't know where to begin. So for now I'll sit back and watch this forum...

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post #6 of 23 Old 11-29-2005, 09:47 AM Thread Starter
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That sounds like a great idea. So i should go and get some sea foam from like an auto parts store, and are the diretions on the container or is there a certain way to do it.
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post #7 of 23 Old 11-29-2005, 09:52 AM
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FWIW, my injectors make quite a bit of noise, kinda sounds like lifters. With a mechanics stethascope (sp?) I can tell it's definately the injectors though.

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post #8 of 23 Old 11-29-2005, 01:02 PM
wrangler2002
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i'm not sure if hydraulic lifters need adjusting (they might): http://www.centuryperformance.com/valveadjustment.asp

but make sure the ticking are not your injectors. use a stethoscope to narrow down the sound. my injectors tick like crazy...so i have just learned to ignore them (they have been doing it since new)
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post #9 of 23 Old 11-29-2005, 01:09 PM
o2tj
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4.0's are not adjustable. 28 ft pounds w/ a tq wrench is it.
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post #10 of 23 Old 11-29-2005, 01:39 PM
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How can you differenciate the ticking of valves and injectors without a stethascope?
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post #11 of 23 Old 11-29-2005, 01:44 PM
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A long extention such as 3/8 about 12" long out of you tool box
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post #12 of 23 Old 11-29-2005, 02:25 PM
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A wooden dowel also works very well. Just hold one end up to your ear with the other against what you're listening to. Plugging your other ear amplifies it even more.

Jim

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post #13 of 23 Old 11-29-2005, 05:16 PM Thread Starter
snowflakega11
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Awesome i'm gonna try to go and get me a stethascope. Then listen in to the injectors and see if that is the problem. I also put some lucas injector cleaner in there today and it really help quiet my engine a good bit.

Thanks for the help everyone!
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post #14 of 23 Old 11-29-2005, 05:21 PM
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just use the hose from your vacume or shop vac!!!

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post #15 of 23 Old 11-29-2005, 05:24 PM
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I'm going to second the manifold question. Mine had a tiny hole and it sounded exactly like a ticking noise. Don't overlook the obvious.

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