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Mike V.
Mike V., Nissan Technician
Category: Nissan
Satisfied Customers: 23626
Experience:  Nissan factory trained and Certified Subaru Technician.
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My car is using antifreeze - there is no visble leak, no puddle

Resolved Question:

My car is using antifreeze - there is no visble leak, no puddle on under the car - I have had it in the shop and they can not find a leak - what else could this be?
Submitted: 7 years ago.
Category: Nissan
Expert:  Mike V. replied 7 years ago.
HI there! What year and model is your car?
Customer: replied 7 years ago.
1995 Nissan Sentra
Expert:  Mike V. replied 7 years ago.
I didn't get all of your info on the first post.
I would ask them to put the pressure tester on it for about an hour, then pull the spark plugs and check the cylinders. You probably have a leaking head gasket, and it is using the antifreeze slowly. I have seen this a bunch of times. Hope this helps! Thanks
Customer: replied 7 years ago.
They did put a pressure test the second time they had it in and they didn't find anything - I'll see if they pulled the plugs and looked at the cyclinders. If this was done and they didn't see anything any other suggestions - could this be my water pump?
Expert:  Mike V. replied 7 years ago.
It could be the water pump or the heater core. The waterpump would normally leave some signs on the ground. The heater core most likely would not.
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