Cylinder head problem
Thread Starter
CF Veteran
Joined: Apr 2008
Posts: 1,052
Likes: 2
From: Lakewood, Colorado
Year: 1990 2dr base
Model: Cherokee
Engine: 4.0L
Can anyone recommend a good shop in the Denver area to get my cylinder head checked? I believe it is warped and or cracked.
Thread Starter
CF Veteran
Joined: Apr 2008
Posts: 1,052
Likes: 2
From: Lakewood, Colorado
Year: 1990 2dr base
Model: Cherokee
Engine: 4.0L
I’m not sure yet, I’ll tear it down tonight. I’m loosing coolant somewhere. It’s not in the oil or leaking anywhere I can see. It has been running warm for about a week and this weekend it would keep overheating anytime I put a load on it. I spent three days in the Monarch pass area trying to figure out something so I could drive it home. I ended up hauling it home on a trailer. All the hardcore mechanics I’ve talked to think it’s a cracked head. I’m sure that even if it was a gasket, I probably trashed the head with the constant overheating. We will see. 



CF Veteran
Joined: Jan 2009
Posts: 3,513
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From: Aurora
Year: 1997 XJ
Model: Cherokee
Engine: 4.0 HO JASPER MOTOR
sounds like you have a warped head to me. when your driving does it smell sweet inside? if so your leaking into the exhaust which steams and creates that smell.
Thread Starter
CF Veteran
Joined: Apr 2008
Posts: 1,052
Likes: 2
From: Lakewood, Colorado
Year: 1990 2dr base
Model: Cherokee
Engine: 4.0L
I’ll start pulling it apart tonight and get an idea what is going on. I just need to find a reputable place to check the head. At this point, I am hopping it is warped or cracked and it’s not a problem with the block.
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CF Veteran
Joined: Jan 2009
Posts: 3,513
Likes: 0
From: Aurora
Year: 1997 XJ
Model: Cherokee
Engine: 4.0 HO JASPER MOTOR
Crap, I thought that sweet smell was me. Actually, it smells like antifreeze and I’m assuming that’s because everything is fricking covered with it inside and out. I popped the pressure cap several times and when you are going up a steep hill, it just flows inside the cab. By the way, wasps love antifreeze and that’s just another treat when you are working on your jeep in the woods.
I’ll start pulling it apart tonight and get an idea what is going on. I just need to find a reputable place to check the head. At this point, I am hopping it is warped or cracked and it’s not a problem with the block.
I’ll start pulling it apart tonight and get an idea what is going on. I just need to find a reputable place to check the head. At this point, I am hopping it is warped or cracked and it’s not a problem with the block.
Thread Starter
CF Veteran
Joined: Apr 2008
Posts: 1,052
Likes: 2
From: Lakewood, Colorado
Year: 1990 2dr base
Model: Cherokee
Engine: 4.0L
I had the heat on a couple of times to try and keep the engine a little cooler but I’m sure it is not leaking. My XJ has the sealed cooling system with the expansion tank high on the passenger side firewall. When it pops, it sprays everywhere, finds all the little holes on the firewall and as soon as you pop the hood it sprays into the air vent below the windshield. What a mess.
Thread Starter
CF Veteran
Joined: Apr 2008
Posts: 1,052
Likes: 2
From: Lakewood, Colorado
Year: 1990 2dr base
Model: Cherokee
Engine: 4.0L
That makes me feel a little better about the block but I am not looking forward to picking up that head. Those things are heavy and the 5-1\2" lift will not make it any easier.
Thread Starter
CF Veteran
Joined: Apr 2008
Posts: 1,052
Likes: 2
From: Lakewood, Colorado
Year: 1990 2dr base
Model: Cherokee
Engine: 4.0L
We will see.
CF Veteran
Joined: Jan 2009
Posts: 3,513
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From: Aurora
Year: 1997 XJ
Model: Cherokee
Engine: 4.0 HO JASPER MOTOR
Yes, a cherry picker would have helped, someday I’ll get one. Unfortunately, I called in all my favors getting this beast home from Salida. I finally got the head off at 11:00pm last night and just dropped it at the shop. Gasket and head both looked alright.
We will see.
We will see.CF Veteran
Joined: Jan 2009
Posts: 3,513
Likes: 0
From: Aurora
Year: 1997 XJ
Model: Cherokee
Engine: 4.0 HO JASPER MOTOR
Yes, a cherry picker would have helped, someday I’ll get one. Unfortunately, I called in all my favors getting this beast home from Salida. I finally got the head off at 11:00pm last night and just dropped it at the shop. Gasket and head both looked alright.
We will see.
We will see.



