Advice needed 4.0l - JeepForum.com
 
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post #1 of 5 Old 08-18-2013, 06:57 AM Thread Starter
zjseeker
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1998 ZJ 
 
Join Date: Jul 2013
Location: Springfield
Posts: 15
Advice needed 4.0l

Have a 98 ZJ, 170,000 miles with noisy lifters. Are they adjustable? Any tips or recommendations? Thanks.

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post #2 of 5 Old 08-18-2013, 09:43 AM
tahoe9813
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Join Date: Aug 2013
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I have had three I6 motors with noisy lifters when the engine is cold. I, personally, think that's the way that motor runs.

I would say that if the noise goes away on acceleration, you're probably good.

Also, something that helped me was to use Castrol High Mileage 20W-50. It's heavier than what you normally use, but it helps the oil stick a bit better. Also, I do believe what they say about it reconditioning seals. While it won't fix your rear main seal drip, it will probably slow it down.
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post #3 of 5 Old 08-19-2013, 12:13 PM Thread Starter
zjseeker
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1998 ZJ 
 
Join Date: Jul 2013
Location: Springfield
Posts: 15
Thanks to Tahoe

Thanks for the reply. Did some more searching into the topic and found info on Seafoam and other lubricants.
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post #4 of 5 Old 08-20-2013, 01:35 AM
Oldfrog
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2007 WK 
 
Join Date: Feb 2008
Location: Louisiana/Texas
Posts: 5,092
If mine didnt sound like a diesel when it is warming up, I'd think something was wrong with it. My 95 and this 97 both have the same sound and I bought them both brand new.

2007 5.7 Hemi, Ltd. QD II -
1997 ZJ, 4,0 select trac, Up country, track lok.
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post #5 of 5 Old 08-20-2013, 02:57 AM
2xCross
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I add a quart of Lucas when I change oil and it helps.
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