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Unread 08-08-2014, 09:13 PM   #1
bob082484
Registered User
1995 YJ Wrangler 
 
Join Date: Dec 2006
Location: Mars, PA
Posts: 486
I hate stop leak!!!

I'm throwing myself upon the mercy of the forums for an answer to clean this crap out of my jeep! I bought my xj over 2 years ago with a cracked head and the PO tried to fix it with bars leak. So far I've flushed it over 8 times and its cost me 2 water pumps, a heater core, 2 thermostats, and all the hoses. I just flushed it again and its still in there! My reservoir was full of this rubbery brown crap and its running hot again. I'm open to any suggestions.

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95 Wrangler Yj
99 Cherokee Xj
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Unread 08-08-2014, 11:33 PM   #2
dmill89
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1995 XJ Cherokee 
 
Join Date: Sep 2012
Location: Harrisburg, PA
Posts: 780
Quote:
Originally Posted by bob082484 View Post
I'm throwing myself upon the mercy of the forums for an answer to clean this crap out of my jeep! I bought my xj over 2 years ago with a cracked head and the PO tried to fix it with bars leak. So far I've flushed it over 8 times and its cost me 2 water pumps, a heater core, 2 thermostats, and all the hoses. I just flushed it again and its still in there! My reservoir was full of this rubbery brown crap and its running hot again. I'm open to any suggestions.
Did you replace the radiator? The radiator has many parallel paths so it is nearly impossible to flush it out completely (water will follow the pat of least resistance so once a few tubes are open the rest will remain plugged as water will now only flow through the "open" tubes). Flush the block/head as thoroughly as you can (if there is a block drain plug remove it), and back-flush the heather core.

Unfortunately "stop-leak" is a notorious pain to clean up. All you can really do is keep flushing, eventually it will all come out.
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Unread 08-10-2014, 09:55 PM   #3
blubullett
Registered User
1995 XJ Cherokee 
 
Join Date: Feb 2012
Location: Modesto, CA
Posts: 19
Most stop leak products are more like a brown paste. The only time I have seen "rubbery brown crap" is when green and orange antifreeze are mixed. It forms into a brown rubbery/jelly-like substance that is super hard to remove from your motor. You would need a new radiator and heater core and then flush the block with the plug removed to get it out. If you can't get stop leak out wthin a couple flushes you aren't doing something right.
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Unread 08-13-2014, 02:05 PM   #4
1stockjeep
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1993 XJ Cherokee 
 
Join Date: Feb 2009
Location: modesto CA
Posts: 876
My blazer was like that, I needed to change hoses and water pump
Along with radiator so I poured a good amount of simple green cleaner inside and ran it for few days. After that I replaced all parts and hoses and it was clean
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