Skip the auto shop - Our mechanics make house calls

Q: Not sure if hose or water pump is the issue. Bad leak spraying coolant on belts. Could it be a hose or water pump?

asked by on

Coolant leaking as car is running. Cannot see where it is coming from. But it is a lot of fluid.

My car has 170000 miles.
My car has an automatic transmission.

Water pumps have weep holes, through which coolant can leak if the pump is failing, but those weep holes are are relatively small. Consequently, the leak is more likely due to a fairly large hole, or tear, in a rubber hose. A large leak like you are describing will be very apparent on inspection. The mechanic will want to know, though, if the leak was preceded by any episodes of overheating as that would mean there could be an underlying issue. That is, inasmuch as overheating raises the pressure in the cooling system, if such occurred that could cause a blow out in weak components such as an old hose or a defective radiator pressure cap...just want to be sure it’s "just" a leak and not a leak accompanied by a defective thermostat, water pump, or plugged radiator, all of which could cause overheating. So, any recollection of the car’s operating temperature just prior to the leak will be helpful. If you desire that YourMechanic identify the cooling system leak and perform the required repairs, by all means please call in and schedule a mobile visit, right to your door.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Not sure if hose or water pump is the issue. Bad leak spraying coolant on belts. Could it be a hose or water pump?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: The CHECK FUEL FILL INLET message came on while I was driving down the highway and had not fueled in several days.

Try removing the gas cap and putting it back on. While the gas cap is off, check the seal on the cap and see if there is any cracks or damage to the seal. If the seal is good and...

Q: i think its the water pump

Be sure the drain plug on the bottom of the radiator is closed and secure. There are a variety of potential leak points in the cooling system. If, using a mirror, you can see coolant leaking out of the water...

Q: Car does not start when I turn the ignition.

The engine in this vehicle has a timing belt and may have broken, causing the no start. Another problem may be the distributor ignition sensors inside it.A mechanic can inspect for your 'no start'. My recommendation is to have the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.