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Unread 01-28-2012, 01:09 PM   #1
Matt24138
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1993 YJ Wrangler 
 
Join Date: Apr 2010
Location: Bethany Beach, Delaware
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Strange tap ???

I have a strange tap. It's sounds like a normal valve tap except it taps a few times stops then taps again. Like tap tap tap tap nothing tap tap tap tap. It's on time constantly by that I mean the sound and silence are the same duration every time. It also taps constantly until it warms up. Not sure what's going on as this started about 3 weeks ago. Any ideas?? It's a 4.0 93. I am worried that I will need a new head soon. Hopefully it's a simple fix. Never heard a tap that stopped and started like this. Especially where it stays in time. Oil level is fine and I did an oil change. No difference.

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Unread 01-28-2012, 03:12 PM   #2
ColoradoYJ95
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sounds like a lifter to me. my dad's old explorer had a tap that was inconsistent but always in time like that, and my jeep has a lifter tap till it warms up as well. but, i'm no expert. just what it sounds like to me!
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Unread 01-28-2012, 03:16 PM   #3
jay-h
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Probably an erratic lifter. Good chance you could go for years like that.
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Unread 01-28-2012, 05:20 PM   #4
Matt24138
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Anything I can do to reduce or calm it down? I found a rebuilt head for 125.00 should I just swap it?
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Unread 08-02-2013, 07:08 AM   #5
incizion
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Im bringing this thread back from the dead. I have similar symptoms as described above. I get what I think is a valve tap when I start her up in the morning until she is warm. Any Ideas?

Thanks in Advance
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Unread 08-02-2013, 07:58 AM   #6
jbrown73
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Hydraulic lifter noise. It's just taking a few minutes to get the oil pumped through the channels to 'self adjust' the spacing between the end of the push rod and rocker arm. Happens on older engines with a good many miles. I wouldn't let it bother you too much.
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Unread 08-02-2013, 09:34 AM   #7
incizion
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thanks for the response, I didnt think it was a big deal but I wanted to make sure.
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