bad lifter? - JeepForum.com

 
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post #1 of 6 Old 11-19-2013, 03:20 PM Thread Starter
bumperthumper
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bad lifter?

Alright so I just picked up this ZJ, and it wasn't firing on a cylinder. Valve cover off told me that a pushrod got stuck in the rocker. All new pushrods and rockers, and when I go to put the problem cylinder on, the pushrod comes up short. I'm guessing the lifter is collapsed, but I figured I'd put it out there and see if anyone else has something to say. So, bad lifter?

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post #2 of 6 Old 11-19-2013, 03:33 PM Thread Starter
bumperthumper
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post #3 of 6 Old 11-20-2013, 05:23 AM
lsuguy4
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What kind of noise did you have? Knocking or ticking around in the motor?
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post #4 of 6 Old 11-20-2013, 08:18 PM
laybackman
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Either the push rod shrunk or the lifter did!

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post #5 of 6 Old 11-21-2013, 06:59 AM
BIGBADWOLF
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Even if the lifter collapsed it would be less than 3/16 of an inch. What is your valve spring height? Does the lash get less when you turn the engine over? Is rocker fulcrum nut tight? If all that checks out your looking at a worn cam lobe or severely worn lifter.
What cylinder? Do you lose coolant?
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post #6 of 6 Old 11-21-2013, 07:05 AM
BIGBADWOLF
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Quote:
Originally Posted by BIGBADWOLF View Post
Even if the lifter collapsed it would be less than 3/16 of an inch. What is your valve spring height? Does the lash get less when you turn the engine over? Is rocker fulcrum nut tight? If all that checks out your looking at a worn cam lobe or severely worn lifter.
What cylinder? Do you lose coolant?
Never mind.....I missed the picture in your 2nd post
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