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Water keeps coming back through radiator cap

Replaced thermostat

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  • Cars & Trucks Master
  • 5,666 Answers

Did you close right.or is bad?

Posted on Nov 25, 2014

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6ya6ya
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Posted on Jan 02, 2017

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HellPoolHall
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SOURCE: 96 honda civic ex runs hot

It is either a blown head gasket or a cracked head. Depending on which motor your civic has, this could be a tricky replacement, either way, you have to remove the head off of the motor, and then take the head to have it pressure checked to see if there is a crack in it. Nine times out of ten though, you can see a crack in the head with your eye, but you have to have the right "eye" to be able to see the crack.

Posted on Aug 05, 2008

  • 16 Answers

SOURCE: Low coolant light keeps coming on

head gasket problem you need to get it to a good garage before you ruin the motor

Posted on Mar 14, 2009

  • 95 Answers

SOURCE: Radiator blockage?

I believe you have a head gasket blown or a cracked head. When you start it up COLD with the cap off, it would push water out immediately. Fill it with plain water and try this. It might not be a bad idea to perform a pressure test too. Also check for antifreeze in the oil. It will get milky looking and might even be over full. If this happens after warm-up, you may just have a plugged radiator. Have it professionally cleaned. The water pump vanes could also possibly be corroded off and it's not effectively displacing coolant. Hope this helps.

Posted on Aug 16, 2009

  • 64 Answers

SOURCE: 2000 Malibu keeps running hot.

You replaced the head gasket but did you get the head or heads checked for cracks or check the block for warpage?

Posted on Nov 21, 2009

  • 4 Answers

SOURCE: I HAVE A 93 TOYOTA CAMRY LE V6, THAT HAS A WATER

Another item worth checking on '92-95 V6 Camry's is the power steering fluid. The radiator fan is hydraulic and runs off the power steering fluid and power steering pump. If your fluid level is low, it might not have affected your steering, but it could have prevented the fan from coming on when necessary.

Posted on Apr 05, 2010

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2 Answers

Can a year-old water pump that doesn't leak or make noise just stop pumping ?


The impeller could break loose from the shaft. You would have to remove the pump to find out for sure.
Could be a blockage in one of the passages too.

Apr 13, 2015 | Cars & Trucks

1 Answer

The water is not hot at all but the radiator is shooting the water out of the cap, and sending the water to the resivore and makes the resivore over flow.


Sounds like you may have a bad radiator. It may be clogged and the coolant is not able to go through it causing it to come out the cap and reserve tank.

Jul 29, 2014 | 1995 Oldsmobile Cutlass Supreme

3 Answers

Engine overheating i have replaced the radiator has plenty of water


replace thermostat.then bleed coolant system, this is how you do it.fill the cooling coolant system with 50 / 50 dexcool and water to raise boiling point,straight water will evaporate boil away cause engine to overheat catch fire thats why you need 50 / 50 mixture antifreeze and water.to bleed coolant system first fill coolant system until coolant stay at the full cold mark on the the coolant overflow jug,then you start engine allow it to idle,place the heater and ac control in any ac setting except max and the temperature control to the highest setting,run engine until lower hose to water pump is hot. with the engine hot run the engine speed up to 3000 rpm and allow it return to idle, repeat this 5 times. slowly open the bleed valve on the thermostat housing or look for bleed valve at the water pump heater hose.open bleed valve for 15 seconds to expel any trapped air.then top off the coolant as necessary,and when top radiator hose hot thermostat open up.keep adding cooling to overflow until coolant level stop at full cold mark dont over fill coolant.if engine seem like overheating while looking at cooling gauge turn off engine wait a while until cool off add more coolant until coolant level stay stable and dont drop any.when open radiator overflow cap use large rag over the radiator cap to keep from getting scald open radiator cap a little at a time but dont open radiator cap until engine cool down first.replace the radiator overflow cap, thermostat,and engine coolant temperature sensor and check the cooling fans fuses and relays see what happens.

Aug 18, 2012 | 1998 Oldsmobile Intrigue

1 Answer

I replaced the water pump, thermostat, flush radiator, check heater core, but the antifreeze keeps coming back into the overflow tank and therfore over heat. what could the problem be.


Only two thing could cause this problem. The actual radiator cap needs to be replaced or the neck is not smooth. If the cap is lifting prematurely it allows water to flow into the expansion tank. The second problem would be a leaky head gasket. This could be determined if the expansion tank has a black reside inside the tank. Changing the water pump and heater core was an expensive route the didn't need to happen.

Feb 10, 2011 | 1999 Chevrolet Cavalier

2 Answers

Truck keeps overheating, can't figure out why, new hoses, thermostat, 10 miles and overheating, any suggestions?


is your water pump circulating the water nissans used to have a problem with impellers on pump
leave rad cap off and run enginge should see water circulating when stat opens

May 05, 2010 | 1995 Nissan Pickup

1 Answer

Even after replacing the radiator, thermostat and


The problem with overheat is due to poor coolant circulating. The main culprit is the Radiator. When the radiator is clogging up, coolant can't be circulating. The stagnant coolant inside the engine water jacket keeps absorb heat from combustion chambers having no way to dissipate the heat then the engine is overheated. You can test the water pump by removing the thermostat, then hooking everything back. Open the radiator cap, then turn on the engine to see if water flowing down to several small tubes inside the radiator. If water can't go down fast enough to cause over flow at radiator opening then your 90 Legend Radiator already got clogged up. Replace with a new radiator, not even a rebuilt one. Good luck.

Dec 13, 2009 | 1991 Acura Legend

1 Answer

My low coolant light keeps comming on!


change the radiator cap. its a 7 dollar part that generally cures the problem. (the silver cap on the top left side of the radiator).

Jun 07, 2009 | 1997 Chevrolet Monte Carlo

1 Answer

Over heating and loss of coolant


Need to check your radiator flow, and thermostat, start the engine cold, with radiator cap off, watch for the water in the radiator, when it starts to bubble over let it, keep water hose close, radiator should blow back till the thermostat opens, the water will go down, and add more water if needed, and put the cap back on,,,, if your thermostat is stick closed it will cause over heating......and you may have to have it replaced.

Feb 01, 2009 | 1999 Volkswagen Golf

2 Answers

Car runs hot


it is most likely your heater core

Jun 18, 2008 | 1998 Honda Accord

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