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Water spilling out of reservoir

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Old 09-08-2011, 09:55 PM   #1
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Default Water spilling out of reservoir

When I drive the car around and get it warm and turn it off it starts to bubble then water spills out the reservoir tank. Any idea of what is causing this? Engine doesnt get hot stays around 170 ish
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Old 09-08-2011, 10:17 PM   #2
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Coolant boils out of the reservoir tank when air gets into the cooling system. Blown head gasket, bad radiator cap or a leak somewhere is letting air in.....

You need to bleed the system of air before trying to spend money on fixes.

Start the engine when its cold with the radiator cap "off". Let it warm up and watch for the coolant level to drop down, then top it off. Then wait again for the t-stat to open and see if the level drops again. Maybe even a 3rd time.
***While you're waiting for it to heat up the first time...squeeze the upper and lower radiator hoses rapidly and firmly about 30-40 times each....that will move the air bubble by the t-stat if there is one there...

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Last edited by LS6427; 09-08-2011 at 10:25 PM.
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Old 09-08-2011, 10:25 PM   #3
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I got a new radiator cap, and tried getting air out already, il try to squeeze more though. Thanks
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Old 09-08-2011, 10:28 PM   #4
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I got a new radiator cap, and tried getting air out already, il try to squeeze more though. Thanks
You'll know all the air is out....when you see the coolant flowing in the radiator fill neck with the radiator cap "off".......
That means the t-stat has opened. As long as you top it off IMMEDIATELY when the level drops down, you took care of the air bubble issue...if thats even the issue.

If you've been running fine and then all of sudden one day you have coolant boiling over....you have a problem.

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Old 09-12-2011, 06:50 PM   #5
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Fixed had my lines mixed up
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Old 09-13-2011, 08:52 PM   #6
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Fixed had my lines mixed up
What do you mean which lines mines doing the same ever since I put the motor back in and I didn't hook the lines up my dad did so I was thinking that mabye there crossed
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Old 11-12-2011, 05:05 PM   #7
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What do you mean which lines mines doing the same ever since I put the motor back in and I didn't hook the lines up my dad did so I was thinking that mabye there crossed
I had the line from the resevior on the bottom and the line from the heads on top so when engine gets warm the water over flows from resevior.
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Old 11-12-2011, 08:30 PM   #8
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was gonna ask you about them lines, i did the exact same thing and it drove me nuts for a few days.
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Old 11-12-2011, 09:33 PM   #9
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i came into this thread and knew exactly that it was lines crossed. caused me frustration for a few days once
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Old 11-13-2011, 12:13 AM   #10
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When it first happend to me I thought my trans cooler was leaking.Really embarrassing when you pull up and your car skeets on it self.
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94, air, antifreeze, bleeding, camaro, cap, car, coolant, fill, flows, neck, reservoir, spilling, spills, water, z28

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