4.0L HO Questions - JeepForum.com

 
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post #1 of 7 Old 07-09-2010, 08:07 AM Thread Starter
clinkous
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4.0L HO Questions

I know im probably in the wrong place for this question but im new...work with me here lol.

On cold start my 4.0l knocks, after it warms up it goes away. Should I be concerned?

Also I have an extra $1,000. My jeep has 153,000 miles on it. Should I look at rebuilding the motor or should I buy more toys for the jeep?

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post #2 of 7 Old 07-09-2010, 08:47 AM
Louie4
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Sounds like the lifters are pumping up. My 4.0L sounds like a diesel and has 296k miles on it. I would run a quart of Mystery Marvel in it with your next oil change.

How bad is this "knock"? Do you think it could just be a "tap"?

Lou

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post #3 of 7 Old 07-09-2010, 08:59 AM
moonshinefuel
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Cold knock is different than knocking after warmed up. I would not be so quick to thinking there is a major problem.
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post #4 of 7 Old 07-09-2010, 09:03 AM
YJake
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Quote:
Originally Posted by moonshinefuel View Post
Cold knock is different than knocking after warmed up. I would not be so quick to thinking there is a major problem.
Agreed. It's actually fairly normal for Jeep engines both 4.0 and 2.5

Jake

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post #5 of 7 Old 07-09-2010, 09:06 AM Thread Starter
clinkous
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Roger that....I was thinking the same thing just needed re-assured. Thanks guys. Any ideas on how to spend my $1,000 lol. I just purchesed new tires and rims, I have a 2" lift and warn bumpers with an 8,000 pound winch.

Give me some ideas.
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post #6 of 7 Old 07-09-2010, 09:14 AM
dell2028
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Lockers and gears.

My Build Up

95 YJ, D30/8.8 w/ 4.88s, SOA, 35x14.50x16.5 Pit Bull Mud Dawgs, 101" Wheelbase, Custom Front Bumper, Winch, Custom Rear Tow Points, Traction Bar, Aussie Locker in front, 20 Gal. Gas Tank modification, Hurculiner Tub, Custom Rear Bumper, SYE and CV shaft, BTF Cross-over Steering, RCI 2191 fuel cell, BTF Rockers, RE 1.5" SOA springs up front and XJ springs in the rear

Down the line a bit...engine swap, the list goes on.
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post #7 of 7 Old 07-09-2010, 09:19 AM Thread Starter
clinkous
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Lockers and gears came to mind, I was also thinking about a paint job....I know it don't have to look pretty, but its pretty rough looking right now lol.

Hey I am in another post right now trying to figure out this fuel vapor smell I have....you guys have any ideas?
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