How to Detect a Coolant Leak


How to Detect a Coolant LeakYour vehicle's engine operates at a very high temperature, but the radiator and the rest of the cooling system helps keep it cool by circulating coolant fluid through the engine. If your BMW springs a radiator leak or a coolant leak elsewhere in the system your car is at major risk of overheating, which could result in engine damage. The most common sign of a coolant leak is the engine's temperature gauge rising to the red zone, this is usually followed shortly by the engine spewing white steam. Before your motor overheats you can perform these checks for a radiator leak.

Visible Coolant Leak

It goes without saying, but the most obvious sign of a radiator leak is a puddle of coolant on the ground under your car. Coolant is often a bright green color, but can also be pink or yellow, and feels slimy to the touch. Radiator fluid is very attractive to animals due to its sweet smell but is very hazardous if ingested so it is important to clean up any puddles that are found. Coolant leaks will collect directly under the frontend of your BMW.

Low Coolant Levels

From time to time be sure to check the coolant level in your radiator, but only do this when the car has not been run for awhile so it is cool to the touch and all fluid has returned to the reservoir for an accurate measurement. If it is low you will want to see a mechanic to have the reason diagnosed, but if no leak is visible there is a good chance coolant is mixing with gasoline and being burnt up. This is often accompanied by white puffy exhaust smoke.

Radiator Rust or Discoloration

If you notice any discoloration or rust on the radiator or surrounding engine parts it could be due to an antifreeze leak that is squirting over the cooling system. If the liquid lands on a hot engine part it will boil and burn off, taking paint with it and leaving behind a spot of discoloration which will begin to rust.

If you think you have a coolant leak or have already experienced overheating in your BMW you need to seek an BMW repair mechanic right away. When it comes time for professional BMW radiator repair in Euless reach out to DFW Bimmer. Our team of expert technicians can solve any problem your BMW is having. Give us a call today at (817) 440-3697 to schedule an appointment for top notch BMW service in Euless or the surrounding areas.

DFW Bimmer Blog

Written By Brian Corey

Published By MORBiZ