New cylinder Head / valves / lifters | Exhaust Popping??? - JeepForum.com
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Unread 04-21-2013, 08:06 AM   #1
calvin196
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2001 XJ Cherokee 
 
Join Date: Jun 2012
Location: lennon, mi
Posts: 108
New cylinder Head / valves / lifters | Exhaust Popping???


SO as it says in the title I have installed a new Cylinder head, New Valves, New Lifters, new gaskets etc..etc..etc....

The thing I may think caused this is the torque wrench used was not clicking ev ery time it felt i may have over-torqued a rocker arm which could have resulted in a valve being misaligned at idle and not opening all the way. Because when I drive this baby its smooth and doesn't pop on deacceleration or anything it only does it at idle or while stopped in drive.

Help

UPDATE:

I have changed the sparkplugs and torqued all rocker arm bolts to 19 FT LBS.

Running smooth now I think the brand new cylinder head is what caused the plug(s) to get fouled out due to all the manufacturing oil/grease on it. Also maybe it could have been caused by the exhaust/intake gasket.

Thanks for your posts guys.


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Unread 04-21-2013, 04:17 PM   #2
calvin196
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Please help me!!
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Unread 04-21-2013, 05:26 PM   #3
cactus_jack
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I would say you're correct about over torquing the rocker arm. Might pull it back apart and double check them all. Sucks but it's probably the only way.
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Unread 04-21-2013, 05:43 PM   #4
KMS97XJ
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I've heard the same noise on cars with incorrect timing. if you did anything in that area new chain etc I'd double check to make sure it's aligned properly. If not somethings not right with valvetrain. Did you make sure to tdc each cylinder you were torqing on all 6? Those bolts rockers cross hats etc are not the sturdiest definitely don't want to try to torque with any pressure on them surely could've bent something not allowing valve to open/close properly causing your issue.
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Unread 04-21-2013, 08:59 PM   #5
cruiser54
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Quote:
Originally Posted by KMS97XJ View Post
I've heard the same noise on cars with incorrect timing. if you did anything in that area new chain etc I'd double check to make sure it's aligned properly. If not somethings not right with valvetrain. Did you make sure to tdc each cylinder you were torqing on all 6? Those bolts rockers cross hats etc are not the sturdiest definitely don't want to try to torque with any pressure on them surely could've bent something not allowing valve to open/close properly causing your issue.
I'm with KMS97XJ on this. First place to look.
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Unread 04-22-2013, 06:18 PM   #6
calvin196
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2001 XJ Cherokee 
 
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Location: lennon, mi
Posts: 108
UPDATE:

I have changed the sparkplugs and torqued all rocker arm bolts to 19 FT LBS.

Running smooth now I think the brand new cylinder head is what caused the plug(s) to get fouled out due to all the manufacturing oil/grease on it. Also maybe it could have been caused by the exhaust/intake gasket.

Thanks for your posts guys.
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