valve adjustment - JeepForum.com

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post #1 of 33 Old 08-19-2012, 12:08 PM Thread Starter
snowcat
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valve adjustment

hey guys i got a 1988 jeep Cherokee limited inline 6 4.0. and i need to adjust my valves how would i adjust my valves because i have loose valve and needs to be adjust but dont know how. could you guys give me some pointer on how to adjust them because my master mechanic buddy is gonna be helping me and idk how and i dont got specs on what the adjustments need to be such as torque and how tight they need to be thank you

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post #2 of 33 Old 08-19-2012, 12:13 PM
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You can't adjust the valves in the 4.0. What makes you think it needs adjusting?


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Originally Posted by Ron Swanson
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post #3 of 33 Old 08-19-2012, 12:19 PM Thread Starter
snowcat
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they seem loose could i double check the torque or what idk thats what my buddy said ticks under a load such as driving but not at ideal
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post #4 of 33 Old 08-19-2012, 12:19 PM Thread Starter
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like it tick everytime im driving but not when park online when im driving and giving gas
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post #5 of 33 Old 08-19-2012, 12:20 PM Thread Starter
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only not online
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post #6 of 33 Old 08-19-2012, 12:37 PM
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The injectors are fairly loud on the 4.0 and can make a ticking sound. The stock exhaust manifold is also prone to cracking and makes a ticking sound as well when it does. I'd start on checking those first.


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There is no such thing as bad weather. Only inadequate clothing and transportation.
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post #7 of 33 Old 08-19-2012, 12:43 PM Thread Starter
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well i dont under stand how it could be injectors because when i pop hood and rev from top of engine doesnt make noise only when im driving thats about it
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post #8 of 33 Old 08-19-2012, 12:47 PM Thread Starter
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coming from back of the engine on top thats where im hearing noise
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post #9 of 33 Old 08-19-2012, 12:49 PM
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How long have you had it? Is the oil full and when is the last time it was changed? The 4.0 takes 6 qts of oil. Have you ever cleaned the fuel system and motor with seafoam or something similar? Could be sticking lifters.

On an unrelated note you have an XJ Cherokee, not a full size.


Quote:
Originally Posted by Ron Swanson
There is no such thing as bad weather. Only inadequate clothing and transportation.
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post #10 of 33 Old 08-19-2012, 12:58 PM Thread Starter
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im do oil change tuesday its full on oil im put some sea foam in that stuff always cleans well so ima try it thanks man ima put full can of sea foam in oil and full thing in gas and whats diffrent on size what you said last
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post #11 of 33 Old 08-19-2012, 01:00 PM
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Full size Cherokees are the old ones from 74-84.



Quote:
Originally Posted by Ron Swanson
There is no such thing as bad weather. Only inadequate clothing and transportation.
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post #12 of 33 Old 08-19-2012, 03:05 PM Thread Starter
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could it do anything with my tranny ???
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post #13 of 33 Old 08-19-2012, 03:31 PM Thread Starter
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since it has push rods
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post #14 of 33 Old 08-19-2012, 03:33 PM Thread Starter
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dont you put filler gage between rocker and valve???
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post #15 of 33 Old 08-19-2012, 04:31 PM
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Negative, there is no manual valve adjustment. It is a "zero" lash hydraulic valve train. It adjusts itself automatically.
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