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 Post subject: Engine overheating
PostPosted: Fri Aug 17, 2007 9:20 am 
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Joined: Wed Oct 11, 2006 7:09 pm
Posts: 29
Location: Greensboro, NC
I just replaced my thermostat on my 1980 chevy luv and it is still getting overheated. My radiator is leaking in two small holes, and I was wondering if that could cause a problem with it overheating. I tried pouring in some stop leak stuff for the radiator, but when I replaced the thermostat and started up my engine, some of that radiator fluid and stop went into the plastic tank where you pour the radiator fluid into. Someone please help me out. Thanks


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PostPosted: Sat Aug 18, 2007 7:44 am 
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Joined: Wed Apr 12, 2006 2:24 pm
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Location: Hermiston,Oregon
:roll: Well now you have changed the t-stat and you have leaks in the rad.

First of all the rad. needs to go to the rad shop and get cleaned and repaired,then you need to pressure test your cooling system to check for any other leaks(like the head gasket).
Chances are that your rad. was plugging up and causing your problem.

You could also flush the block and when done it and the heater core will be clean of dirt and rust that clogs the system.

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PostPosted: Sat Aug 18, 2007 10:03 am 
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Joined: Thu May 22, 2003 8:33 am
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You can also usaully find a decet radator new or used on ebay for under a hundred bucks.

But regardless - Luvs with a stock G180 1.8 engine are apt to pop headgaskets and warp heads if they overheat too much too often, so it would probably be a real good idea to fix the probem soon.


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 Post subject: Engine Overheating
PostPosted: Mon Aug 20, 2007 9:51 am 
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Location: Greensboro, NC
If radiator fluid is getting pushed back into the overflow tank, then could that be the cause of a blown head gasket?


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PostPosted: Mon Aug 20, 2007 10:15 pm 
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Location: Whittier, (So). Cal.
Just a hot eng. will push coolant into the overflow tank. Not nessesarly a blown head gasket.
With the eng. cool, take the rad. cap off, and start the eng. When it gets warm enough, the thermostat will open and let the coolant flow. Some may spill over, no big deal.
If the coolant is foamy, oily or just seems to have a lot of bubbles in it, that is a sign of blown head gasket.

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