Author Topic: Valve Noise  (Read 861 times)

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Offline jfrabat

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Valve Noise
« on: March 11, 2008, 01:47:07 PM »
My rig, from day one, has had a valve noise which I thought could possibly be the timing belt.  Using the broomstick technique, I kind of located the problem at the valves, but now I want to know how I go about fixing it.  Keep in mind that I only started doing mechanical work when I got the rig about a year and a half ago, and although I've done some things I always thought were outside my skills and experience, I have never touched the engine itself, so I have no idea what to look for, how to locate the particular valve with the problem, and how to fix it.

Anyone here feel like guiding me?  I do have the Chiltons, Haynes, and Jeep Service manuals, so if you point me in the right direction, I guess I could probably do it myself (can you tell my confidence level has improved with my hands-on experience?), but I dont know how to locate the problem, or if this is something a shade-tree mechanic can do at all...

Thanks!
'94 YJ 2.5L with 4" RE lift, Superwinch EPi9.0, FoMoCo e-Fan, SD30 and SD35 w/ARB-5.13, 165A alt., 33" BFG KM2 on 15" AR wheels, Sony sound system, Pavement Ends Hardtop, Hydroboost

jcsanders79

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Re: Valve Noise
« Reply #1 on: March 11, 2008, 02:31:00 PM »
Shade tree mechanic and tool owner are totally different.  Odds are if you have no training you should at least have help from someone that does.  I would at least have someone confirm that the valves are even the problem.

Offline Jeffy

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Re: Valve Noise
« Reply #2 on: March 11, 2008, 03:28:06 PM »
2.5L's as well as 4.0L's tend to have noisy valves to begin with.
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Offline neale_rs

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Re: Valve Noise
« Reply #3 on: March 11, 2008, 04:28:52 PM »
Mine is pretty noisy too. I've decided to just live with it.
'95 YJ, 33 x 12.5 mud tires, RE 4.5 ED lift, Atlas 4 speed, rear D44, ARBs front and rear, 4.56 gears, 8000# winch

95yjman

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Re: Valve Noise
« Reply #4 on: March 11, 2008, 06:45:08 PM »
Mine are noisy sometimes, its not that bad.  When it gets bad enough, it will get a bigger engine.

damon54

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Re: Valve Noise
« Reply #5 on: March 11, 2008, 06:56:14 PM »
lifter rattle?  Solid lifters don't self adjust to wear.

Offline Bounty Hunter

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Re: Valve Noise
« Reply #6 on: March 12, 2008, 01:41:33 AM »
Try running 1/2 to 1 qt. of tranny fluid in the engine.

My mechanics 4.0L was doing this.  He found that when he went in and rotated the valve 90º that the noise would quit, for a while.

Offline jfrabat

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Re: Valve Noise
« Reply #7 on: March 12, 2008, 08:12:37 AM »
I think I will try to record an MP3 of it, and let you guys hear it; might give you a better feel to check if somethings wrong or not...



Felipe
'94 YJ 2.5L with 4" RE lift, Superwinch EPi9.0, FoMoCo e-Fan, SD30 and SD35 w/ARB-5.13, 165A alt., 33" BFG KM2 on 15" AR wheels, Sony sound system, Pavement Ends Hardtop, Hydroboost