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XJ Ask the Question Thread
06-04-2016, 08:43 AM
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Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
I have 2 MJs and an xJ that we drive.
And, more than a couple part-outs going on at any given time......
And, more than a couple part-outs going on at any given time......
06-04-2016, 09:56 AM
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Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
06-04-2016, 07:48 PM
No, I don't lick fish.
06-04-2016, 08:02 PM
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Location: upstate, New York
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Year: 1988
Model: Cherokee
Engine: 1991 I6 4.0 HO
06-04-2016, 08:03 PM
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Location: west chester, pa
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Year: 1999
Engine: 4.0
06-04-2016, 08:06 PM
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
06-04-2016, 11:13 PM
No, I don't lick fish.
06-05-2016, 12:37 AM
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
06-05-2016, 01:34 AM
No, I don't lick fish.
06-05-2016, 08:35 AM
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Year: 1999
Engine: 4.0
So I used a borescope to inspect the number one cylinder on my 4.0.
-the quench chamber/ head gasket area. (I don't know if that's the proper term for it) it's looking crusty yellow. Is that normal?
-the gap around the piston and the cylinder wall is not the same. There's a spot on the piston that got bigger gap than the rest of the piston and that gap have yellow stuff on it.
-the dish on the piston look gray and brown with a spot that look like when you get a sun burn and your skin start peeling off. There's also a line on it. Not sure if that's normal or it's a crack.
-one of the valves look very yellow/white while the other valve look very brown.
-I don't see any visible scoring marks on the wall but I did notice very very faint black line, not sure if that's a scoring mark or just a carbon smear.
-the quench chamber/ head gasket area. (I don't know if that's the proper term for it) it's looking crusty yellow. Is that normal?
-the gap around the piston and the cylinder wall is not the same. There's a spot on the piston that got bigger gap than the rest of the piston and that gap have yellow stuff on it.
-the dish on the piston look gray and brown with a spot that look like when you get a sun burn and your skin start peeling off. There's also a line on it. Not sure if that's normal or it's a crack.
-one of the valves look very yellow/white while the other valve look very brown.
-I don't see any visible scoring marks on the wall but I did notice very very faint black line, not sure if that's a scoring mark or just a carbon smear.
06-05-2016, 09:12 AM
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,971
Received 1,559 Likes
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1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
06-05-2016, 09:14 AM
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
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Received 1,559 Likes
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1,263 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Attachment 289402 Attachment 289403 Attachment 289404 Attachment 289405 Attachment 289406 Attachment 289407
Yeah I know pics suck
Yeah I know pics suck