Common Signs of Cooling System Failure

Common Signs of Cooling System Failure

After you start your car, it doesn't take long for your engine to start getting really hot. To ensure that the heat doesn't become excessive, you need a healthy cooling system. If any component of your cooling system fails, then your engine may overheat, which could cause major problems, such as a cracked block. Here are six signs that it's time for cooling system repair.


One of the more familiar signs of overheating is that smoke starts emerging from under your hood. If this happens, you'll probably need to add coolant/water, but it's important that you wait until your engine cools down before doing so.

High Reading on Temp Gauge

You'll want to safely get off the road if your temp gauge climbs into the red zone. Then, you can call up a mechanic and explain the symptoms and situation. The mechanic can then give you guidance on whether it seems safe to continue driving any further.

Worsening Gas Mileage

Optimal gas mileage is attained when the engine is running within a healthy temperature range. When engine temperature runs high, it's possible that you could see a drop in MPGs.

Low Coolant

If you notice that your coolant level has suddenly dropped, you'll want to figure out if you've got an internal coolant leak. Such a leak could lead to serious damage to internal engine components.

White Exhaust Smoke

White exhaust smoke is an indication that coolant is burning up in the combustion chamber. This often occurs due to a bad head gasket.

External Coolant Leak

It's a good idea to occasionally scan over the pavement where your car is usually parked and see if there are any signs of fluid leaks. Coolant is often identifiable by its bright color. Though green is a familiar color for coolant, yours could be another color such as yellow or pink.

If you need auto repair, be sure to visit a reputable mechanic. For cooling system repair in Sandy Springs, Dunwoody, Brookhaven, Vinings, and North Atlanta, GA, contact the experts at McCullough Napa Auto Care at (404) 252-3014. Feel free to give McCullough Napa Auto Care a call today to make an appointment for any of your vehicle's repair or maintenance needs!

McCullough Napa Auto Care Blog
Posted: May 9, 2021

Written and Published By MORBiZ