Performing a flush and fill on your cooling system can create potential overheating problems if not done properly. Be sure to watch out for the following situations when doing a flush and fill on your cooling system.

A Pinched Hose

To drain the cooling system, it is necessary to remove a hose at the bottom of the radiator. Once the coolant is drained, the hose must be replaced on the outlet tube exiting the bottom of the radiator. Make certain that the tube does not pinch or fold when you reattach it to the tube. This bottleneck can prevent coolant from circulating through the system freely.

Improper Coolant Mixture

Be sure to use the coolant recommended by your vehicle’s manufacturer. The wrong type of coolant and/or mixing the incorrect concentration of coolant and distilled water can also result in engine overheating.

Air In The System

It is not uncommon for air to get trapped in the cooling system during the flush and fill process. Any air in a cooling system that is not above the coolant level in the radiator can cause an air pocket blockage. A blockage prevents the coolant from circulating through the system, which will cause the engine to overheat.

It is always important to inspect all cooling system components during a flush and fill to make sure they are in proper working order. Following these recommendations will help ensure that your engine will run at the proper temperature and avoid overheating.