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Coolant leak from water pump - 2010 Buick LaCrosse CXL

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Posted on Jan 02, 2017

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SOURCE: leaking coolant/ not from hoses or water pump /or

check your heater core

Posted on Aug 10, 2009

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Losing coolant


You likely have leaking head gaskets.

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if you have a coolant or antifreeze mixed with the water, you should see a trace of the coolant on the motor, where it is leaking. check water hose clamps and water pump. if the water pump is leaking slowly, it has failed and will break within time. any coolant leak will cause your car engine to overheat.

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Probably the water pump. You should see coolant coming from the vent hole on the pump--usually on the bottom.

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The most common source of a coolant leak on any engine is by far the water pumps front seal. If you get under the engine you should be able to see the white stains from the dried coolant leading towards the water pump, you can also touch under the front of the water pump and see if it is wet with coolant. Please rate my help for Fixya. Thanks

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Possibility of a cracked block. how can i be sure/


Vehicles: Any with the above symptoms

A cracked cylinder block will cause either:
(a) motor oil contamination of engine coolant
(b) coolant contamination of motor oil
(c) white exhaust smoke, due to coolant seeping into one or more cylinders.
(d) more than one of the above
(e) all of the above

Oil infiltrating into coolant is easy to see - drain some coolant out through the pepcock at the bottom of the radiator, and place it into a styrofoam coffee cup. Oil droplets floating on top of the green (or orange) coolant are easily seen. Or visualize oil by looking into the top of the radiator through the radiator cap.
Coolant infiltrating into and mixing with motor oil will permanently damage the engine (seizing it up through loss of lubrication), and must be prevented.
A leak from above the front suspension is, as physicians like to put it, "nonspecific", with the most likely cause a water pump seal or hose/hose connection.
A leak from near the fire wall will usually be a heater core hose, or hose connection.
A coolant leak on the same side of the engine as the water pump is a leaking water pump or water pump seal until proven otherwise.

To rule out everythng else, here's the 1999 Honda CR-V Troubleshooting Guide for Coolant Loss/Coolant Leaking:

Priority Action Part Type Cause
1 Inspect Water Pump - Worn, Cracked or Leaking Water Pump, or Water Pump gasket.
2 Inspect Head Gasket - Leaking Head Gasket.
3 Inspect Radiator - Leaking Radiator Hose(s).
4 Inspect Radiator Cap - Worn or Damaged Radiator Cap.
5 Inspect Radiator Hose - Ruptured, Cracked or Leaking Radiator Hose.
6 Inspect Freeze Plug - Leaking Freeze Plug(s).
7 Inspect Intake Manifold Gasket - Leaking, Worn, or Damaged Intake Manifold Gasket.
8 Inspect Water Outlet - Cracked, Leaking or Damaged Water Outlet.
9 Inspect Heater Control Valve - Leaking or Faulty Heater Control Valve.
10 Inspect Radiator Drain Pepcock - Loose, Damaged, or Faulty Radiator Drain Pepcock, or Pepcock O-ring.
11 Inspect Engine (DOMESTIC ONLY) - Cracked Cylinder Block Leaking Coolant into at least one Cylinder, causing white exhaust smoke.

Dec 03, 2011 | 1999 Honda CR-V

1 Answer

I have 2001 alero. Yesterday the coolant light came on and the engine just died. Any ideas maybe fuel pump or timing belt or could it be the water pump


IF LOW COOLANT LIGHT CAME ON ENGINE SHUT OFF BECAUSE IT GOT TOO HOT AND OVER HEATED.WHEN YOU HAVE LOW COOLANT.YOU COULD HAVE LEAKING RADIATOR.YOU COULD HAVE LEAKING RADIATOR HOSES AND WATER PUMP. ADD MORE COOLANT IN CAR RADIATOR UNTIL YOU AT FULL COLD MARK ON THE OVER FLOW COOLANT TANK START THE CAR LET IDLE UNTIL ENGINE GET OPERATING TEMPERATURE.RAISE YOUR HOOD LOOK FOR LEAKS THE RADIATOR PRESSURE WILL PUSH COOLANT OUT WHERE LEAKS COULD BE.LOOK AROUND RADIATOR AND COOLANT HOSES.LOOK AT WATER PUMP.IF YOU SEE COOLANT LEAKING AT WATER PUMP REPLACE IT.

Feb 26, 2011 | 2000 Oldsmobile Alero

1 Answer

I have coolant leaking out of the fan pulley. why?


If the coolant is coming out of the one that's more to the center of the engine, it's going to be your water pump, when water pumps go bad they will leak coolant out, water pumps have a little hole in back of the pulley, that when the seal goes bad it will leak coolant through there.

Dec 06, 2010 | 1991 Ford F150

1 Answer

If the water pump goes out , would the radiator warning light come on?


If it has a coolant level sensor in the radiator yes it will, due to low on coolant due to water leaking from water pump, coolant will leak from water pump if bad, unless it just has bad water pump bearing's, then some time's it will not leak and just make a noise.

May 21, 2010 | 1995 Mitsubishi 3000GT

2 Answers

I have a coolant leak and I belive I need to replace the water pump, A 2004 GMC P-up 4.3 V-8


You need to locate the water pump. It is turned by a fan belt. There should be water hoses running into and out of the pump. Water pumps have a weep hole that leaks water when the pump starts to fail. It is usually hard to see as it is behind the pulley for the fan belt. If you're seeing a leak in this area it is a pretty good chance that the pump is bad and needs replaced.

Dec 04, 2009 | 2004 GMC Sierra

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