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Unread 11-29-2005, 09:08 AM   #1
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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Unread 11-29-2005, 09:27 AM   #2
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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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Unread 11-29-2005, 09:34 AM   #3
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I will check but i don't think so, i'm willing to try anything.
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Unread 11-29-2005, 09:43 AM   #4
RockRunner85
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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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Unread 11-29-2005, 09:47 AM   #5
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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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Unread 11-29-2005, 09:47 AM   #6
snowflakega11
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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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Unread 11-29-2005, 09:52 AM   #7
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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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Unread 11-29-2005, 01:02 PM   #8
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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Unread 11-29-2005, 01:09 PM   #9
o2tj
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4.0's are not adjustable. 28 ft pounds w/ a tq wrench is it.
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Unread 11-29-2005, 01:39 PM   #10
Achped
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How can you differenciate the ticking of valves and injectors without a stethascope?
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Unread 11-29-2005, 01:44 PM   #11
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A long extention such as 3/8 about 12" long out of you tool box
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Unread 11-29-2005, 02:25 PM   #12
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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.

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Unread 11-29-2005, 05:16 PM   #13
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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Unread 11-29-2005, 05:21 PM   #14
coorsmgood
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just use the hose from your vacume or shop vac!!!
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Unread 11-29-2005, 05:24 PM   #15
Awshux
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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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