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Hi I have a Pajero that is loosing water. The water pump is leaking and there are bubbles in the radiator. The bubbles could be a head gasket problem but could it just be a badly leaking water pimp problem? Could a water pump take in air? I picked Lancer in the Chose a Model because there is no Pajero listed.

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Yes a Water Pump that is leaking can take in Air. You will need to get the Water Pump replaced. The same thing happened on my Neon. Get the Water Pump replaced and your problems should go away.

Posted on Jun 27, 2009


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If its a head gasket shouldnt i have air bubbles in radiator.

No! Air bubbles in the radiator is usually caused by a damaged radiator hose, a leak in the radiator, a faulty water pump or there isn't enough coolant in the system. A blown head gasket usually leaks oil into the coolant and coolant into the oil. It may also run rougher if its leaking from cylinder to cylinder.

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Overheating car

maybe you have a blown head gasket your leaking head gasket when ur car is cold open your radiator cap see if the coolant in it try to tap up coolant until the neck of your radiator then start your engine and observe the radiator neck if the collant puks it out if your coolant is pukking out meaning you have a leak or blown head gasket and thats the cuz of your overheating

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Pajero overheating

It sounds like you had a blown head gasket and it was leaking into the oil or into the exhaust and being burned. if you look at the oil on the dip stick it may look milky. if the head gasket starts leaking internally then it can / will cause overheating

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Have to keep adding water to overflow tank...Code read PO117 for mazda miata MX5

You have a leak in the radiator, water pump, a hose, the heater or a head gasket. Check these and see if there is any water coming out of the exhaust or in the sump.
Take off the radiator cap, fill it right up to the neck, start the engine and warm it up. See if there are any bubbles in the top of the radiator, keep it topped up so there is no room in the top tank.
If there are continuous bubbles then there is a leak in the head gasket.

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My hyundai verna 1.5 liters 2001 has a overheating problem with bubbels in the radiator

Question: With the engine cold and the radiator cap removed, do bubbles immediately apprear in the coolant in the radiator when the engine is started? If so, you have a combustion chamber leak into the cooling system inside the engine (blown head gasket, cracked head/cylinder block, etc).
If there are no bubbles immediately, and the bubbles only appear after the engine is HOT, then it may be a leaky head gasket, a sticking thermostat (closed) or restriction in the radiator core or water pump not pumping.

Have a qualified/certified Hyundai Service Technician properly diagnose this issue.

Sep 02, 2011 | Hyundai Accent Cars & Trucks

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I have exhaust bubbling out of my radiator over flow and dont kno if its cus the head gasket is blown or if its just steam evaporating because the water pump isn't working on a 2000 hyundai accent

If you have excessive bubbling comming out of the radiator or overflow, its usually because of compression leaking into your cooling system caused by a blow head gasket or cracked block. If the watter pump isnt circulating coolant its most likely over boiling the coolant in the motor. Best suggestion is to leak down test the motor with the rad cap off. See if you're loosing pressure and if so, check if the pressure is comming out of the rad. If it is loosing pressure and comming out of there, you have one of the following issues above. If not repair the water pump, change the thermostat as well and re-check

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My 1996 chevy suburban wont start

If you plugged the original leak (which sounds like the head gasket) and then the radiator was leaking, and you are having water coming out of the exhaust, then you need to replace the head gaskets. It sounds like you had a blown head gasket from the start. Here's what to do.

1. Replace the head gaskets (will need intake manifold gasket as it need to come off for this procedure).

2. Replace thermostat, radiator cap (if radiator is still good)

3. Replace water pump; the water pump may have stopped working (mechanical), which in turn caused the pressure to build an blow the head gasket (the cause of the pump would be a bad thermostat. If the truck was overheating, then the thermostat was bad to begin with, then the pump, then the head gasket, so then the only place left for the water to go is out the exhaust.

Here is a list of replacements:

^ water pump
^ thermostat
^ head gaskets
^ valve cover gaskets
^ radiator cap (if radiator is good)
^ radiator : if leak from cap caused any damage to radiator (should still be good)

**Also check the radiator hoses to ensure they do not have any "bubbles". Hot water over time (with anti-freeze) erodes the inside of the hoses, and begins to "dig" holes and grooves in the hose, which evetually cause leaks. Consider replacing these as well for safe measure.

Please, let me know if you need further assistance.


Guru, Premium Expert @

Jun 22, 2010 | 1996 Chevrolet Suburban

3 Answers

Overheating problem

I would go with slowcalafl. It is either air, or a cracked head bad head gasket. Remove the radiator cap when cool. Start up the car and watch for bubble emerging from the coolant. If it continues to bubble, you have a bad head or head gasket. If not, look for improper timing as another possibility.

Jun 29, 2009 | 1994 Mitsubishi Diamante

1 Answer

94 cadillac loosing water

look into the coolant recovery bottle with engine running and make sure hose i end is submerged. If you see bubbles, you have a head gasket leaking. How does the car run on start up?? a little rough at first?

Jun 09, 2009 | 1994 Cadillac DeVille

2 Answers

1997 Firebird over heating

Hi could be a thermostat or a head gasket
take the rad cap off a start the car see if there are bubbles in the rad if there are no bubbles then change the thermostat if there are bubbles then good chance it's a head gasket

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