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valve tap

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Old May 26, 2017 | 08:25 PM
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valve tap

Okay here's what I got. My neighbor and I noticed a tap coming from the passenger side valve cover. We opened it up and investigated the the problem. What we found was the 2nd valve rocker arm is loose(side to side movement) no matter how tight the bolt is. Oil flows from all pushrods but the tap sounds terrible. We previously did a compression test and the picture explains what we found.
Notice the difference between 1 and 2, maybe this is the evidence of a problem?
 
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Old May 26, 2017 | 09:58 PM
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can you discern if the valve is coming all the way back up?

The valve could be burned, or bent. How are the pushrods?
 
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Old May 27, 2017 | 06:15 AM
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The pushrod was okay
 
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Old May 27, 2017 | 09:22 AM
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Compression is good, pushrods are good. Most likely a bad lifter.
 
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Old May 27, 2017 | 10:07 AM
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You would have to pull the push rods out to check them ie roll em around on a flat surface.
 
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Old May 27, 2017 | 06:36 PM
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Should I try to replace spring and rocker arm first before I go any deeper?
 
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Old May 27, 2017 | 08:01 PM
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Originally Posted by beartracks
You would have to pull the push rods out to check them ie roll em around on a flat surface.
We did not roll the pushrod on a flat surface, just visual.
 
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Old May 27, 2017 | 08:04 PM
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Maybe I should just get my heads reworked or buy new if a new spring and valve rocker doesn't fix the tap?
 
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Old May 27, 2017 | 09:36 PM
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Define the problem first

I'd recommend accurately defining the problem before trowing money at it. Changing the rocker & spring won't do any good if there is nothing wrong with those parts. Your compression is good except for #1. Reworking the head would be a waste of money if the problem is with the lifter. Once you get to the real problem probably the noise will cease and the the compression will go up on #1.
 
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Old May 27, 2017 | 11:11 PM
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Originally Posted by Ozzie H.
I'd recommend accurately defining the problem before trowing money at it. Changing the rocker & spring won't do any good if there is nothing wrong with those parts. Your compression is good except for #1. Reworking the head would be a waste of money if the problem is with the lifter. Once you get to the real problem probably the noise will cease and the the compression will go up on #1.
Yes, I have been talking to several people and reading a lot tonight and it seems the lifter is what I should be looking at as the possible problem. I am going to drive the truck some first to see if the tap will possibly go away on it's own. I recently did a oil change, I changed oil from penzoil to castrol high mileage and I left the truck sit for several days without adding new oil as something came up in the middle of the oil change that needed my attention.
Thanks Ozzie and everybody else that has helped me.
 
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