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  #1  
Old August 4th, 2017, 16:23
Mikep_86441 Mikep_86441 is online now
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Piston slap?

While I hope for responses to my ignition post, I have a fairly common sound coming from the 4.0 in my xj.

Here is a video I shot yesterday analyzing the sound of the problem.

https://youtu.be/ozllHafEK-c
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  #2  
Old August 4th, 2017, 16:50
Jeep Driver Jeep Driver is offline
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Re: Piston slap?

21 minutes...............jeeeesh


What is the point of your post? Dated 2016?

Did you do an in frame?

Big mistake and there is simply no point in it.


You'll be doing it again.
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  #3  
Old August 4th, 2017, 17:19
RCP Phx RCP Phx is offline
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Re: Piston slap?

Certainly sounds like rod knock, best to use some form of "stethoscope" to further define it!
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Old August 4th, 2017, 17:40
Jeep Driver Jeep Driver is offline
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Re: Piston slap?

Quote:
Originally Posted by RCP Phx View Post
Certainly sounds like rod knock, best to use some form of "stethoscope" to further define it!
You didn't watch?
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  #5  
Old August 4th, 2017, 21:15
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Ecomike Ecomike is offline
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Re: Piston slap?

Loose, and leaking exhaust system, that exhaust part near and or attached to the exhaust pipe and the transmission mount is rattling at the frame?????

And or cracked flex plate, but I think it is just the exhaust. Missing bolt??? Bent exhaust pipe?

Check the entire exhaust!!!!

I agree it is not piston slap in my opinion. Sounds like a loose metal part rattling at idle, that goes away when the engine moves and torques as you give it gas.

Quote:
Originally Posted by RCP Phx View Post
Certainly sounds like rod knock, best to use some form of "stethoscope" to further define it!
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Old August 4th, 2017, 21:23
Jeep Driver Jeep Driver is offline
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Re: Piston slap?

Quote:
While I hope for responses to my ignition post, I have a fairly common sound coming from the 4.0 in my xj.

Here is a video I shot yesterday analyzing the sound of the problem.

https://youtu.be/ozllHafEK-c



Quote:
Originally Posted by Jeep Driver View Post
21 minutes...............jeeeesh


What is the point of your post? Dated 2016?

Did you do an in frame?

Big mistake and there is simply no point in it.


You'll be doing it again.
When I hit your link.......this is where it took me

https://www.youtube.com/watch?v=ClnTMk7C_tg


Don't know how that happened
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  #7  
Old August 4th, 2017, 21:27
Jeep Driver Jeep Driver is offline
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Re: Piston slap?

<iframe width="560" height="315" src="https://www.youtube.com/embed/ozllHafEK-c" frameborder="0" allowfullscreen></iframe>
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  #8  
Old August 5th, 2017, 13:54
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Green Mesa XJ Green Mesa XJ is offline
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Piston slap?

I thinking flex plate or torque converter bolts.


Sent from my iPhone using Tapatalk
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  #9  
Old August 7th, 2017, 08:31
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90xj06 90xj06 is offline
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Re: Piston slap?

I 2nd the flex plate or torque converter bolts. it was making the noise while cranking. also for the love of all that is good. flush that poor cooling system!
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