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How does water circulate in an engine - Cars & Trucks

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The cooling system is made up of the passages inside the engine block and heads, a water pump to circulatethe coolant, a thermostat to control the temperature of the coolant, a radiator to cool the coolant, a radiator cap to control the pressure in the system, and some plumbing consisting of interconnecting hoses

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Landon

Posted on Apr 16, 2017

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Posted on Jan 02, 2017

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I have a 2002 kia rio cinco changed radiator and fan assembly. Thermostat is out but it still heats up on me! Whats the problem?


Sounds like the water pump if you have had all that done. Remover the filler cap on the engine that says "DO NOT OPEN WHEN HOT" please dont open it when hot. check that it is full and you don't have an airlock (it will fill your header bottle as well if you go right to the top. Start the engine and you should see the water circulating top up if it goes down. If when the engine is running, the water gets blown out with force then I would be looking at cylinder head or gasket problem. If after topping up in the engine water point, and you can see water circulating, top it right up and replace the cap. providing you have no leaks this should have cured the overheating. No circulation means, change the water pump. Hope that helps.

Mar 13, 2015 | 2002 Kia Rio

1 Answer

How to replace head gaskets


What engine? Has thermostat been changed? You say it has not overheated since, but water not circulating. If water/coolant wasn't circulating, it would be overheating. Please explain a little more or confirm why you think that.

Feb 25, 2014 | 1998 Dodge Ram 1500 4WD

2 Answers

Can a water pump make water to return to the water bottle


If the engine overheats from a thermostat
stuck closed or bad head gasket

Aug 10, 2013 | Cars & Trucks

1 Answer

1996 ford taurus. Should the water pump pump water even when cold.


Yes it does pump water at all times... when the thermostat is closed it will only circulate water through the engine, when the thermostat opens it will circulate through the engine and radiator cooling the water that was warm from engine heat.

Jan 04, 2011 | Ford Taurus Cars & Trucks

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96 nissan altima with ne water pump and thermostat


1. Improper water circulation: Sometimes, eventhough you are sure that you have enough water on your radiator, your car still overheats. It might probably be that the water is cannot circulate properly, which results to improper cooling process. There are several reasons for this which you can discover by yourself. To verify if the water circulates properly, start your engine without the radiator cap. If water circulation is good, you should notice that the water pops smoothly over the top but still retains the amount. Another way to check, detach one of the ends of your radiator hose from your radiator and see if water flows continously over.
If water doesn’t circulates well, check the thermostat if it’s open. It should be open, meaning clean, and the water can pass through it.
If thermostat is clean and still the water doesn’t circulate properly, then you have to check the water pump. That’s probably where the problem is. A little leak on the pump will cause improper flow of water through the radiator system.
If you are sure that the problem is not about water circulation, another thing you can consider is check the engine oil. Very low amount of oil can cause greater friction of the mechanical system of your engine. If it’s not time to change oil yet, you can add over some amount of oil until advisable amount is reached.
While we can’t be always sure about our engine, especially if it’s not new, we should be prepared when it happens. Bringing extra gallon of water in your trunk will surely help.

Jul 28, 2010 | 1996 Nissan Altima

1 Answer

Coolant is not ciculating and not leaking it is blowing back in can i had new hose and thermostat housing put on is it air locked?


When engine is cold, take out the thermostat. Put back everything add water as needed to the radiator, leave the radiator cap out. Start the engine be careful stand in front of the radiator and where the radiator cap goes watch if the water is circulating rev it slowly and the water should circulate faster. If it is not circulating the radiator maybe clogged, inside the cylinder head where coolant circulates might be clogged or the water pump is not working.

Jul 15, 2009 | 2001 Ford Focus

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Engine runs hot, fan comes on & stays on.


Try to see if the water is circulating in the system. Better way to check without burning yourself is to take the thermostat out and run the engine this way it should start circulating right away. If the impeller on the water pump is not turning the water wont circulate.
I have seen this in a VW Jetta but don't know what type of w/pump is in your Honda.

May 12, 2009 | 1986 Honda Civic

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