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What causes antifreeze to overflow into radiator reservoir on a 1990 Honda Civic LX?
Wiki User
∙ 13y ago
If you have excessive bubbles coming from your radiator (remove the radiator cap only when the engine is cold) with the engine running, Then you have a blown head gasket. You may need to increase the idle speed a bit to see the exhaust gasses coming out. Fill the radiator to over full with water.
An other cause is: the engine must be able to pull a vacuum on the reservoir hose to return the water to the engine as it cools. I have found that the plastic reservoir cap may have a hole or crack under the cap. Take the cap off with the hoses attached, clean it, then blow on the hose covering the other hose end to see if it leaks. It must not leak. If it does then water can fill the reservoir but not return to the engine.
Wiki User
∙ 13y ago
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What causes coolant reservoir overflow or backup?
The radiator cap could be the cause of coolant reservoir overflow or backup. Have the cap checked to see if it is bad.
What causes antifreeze to overflow out of tank?
something.
Why does antifreeze backup into the overflow tank?
Heat from the engine causes liquid to expand. It used to overflow onto the ground if it caused enough pressure to open the radiator cap. The overflow tanks were installed to automatically catch and return the coolant to the cooling system.
What causes antifreeze to come out the overflow?
when your engine is hot it causes the water to boil and the water and the anti freeze will come out of the overflow pipe.
What causes antifreeze to leak?
Loose hose connectors, damaged hoses, bad head or intake manifold gasket, punctured radiator or reservoir... all depends on where it's leaking at.
What causes temp light to come on 1998 vw cabrio?
The antifreeze is low in the reservoir.
What causes engine oil to get into the antifreeze reservoir?
A bad head gasket can do that or an engine oil cooler gone bad in the radiator. The year, make and model info would help.
What causes excessive coolant in recovery reservoir?
Defective radiator caps or tubes
In a 1996 Plymouth Neon what causes the water to boil in the reservoir?
replace your radiator cap...
What causes coolant to backup and spill over in the reservoir?
I had this problem ....Head Gasket or radiator cap
What causes oil to get into radiator reservoir on a 1989 Festiva?
The most likely is a blown head gasket.
What causes water to boil in the radiator reservoir?
Can be the thermostat which is cheap to replace, or it might be the head gasket which is expensive.
