Why does a car need an engine rebuild? Engine rebuilds are done only when the previous engine isn’t able to function properly or run at its maximum goodness. It’s no joke to rebuild an engine because it could take weeks for the parts to come and to assemble them, it might even take longer. After an engine rebuild, they run a dyno test to see how it is performing with the parts that they installed and if there is a problem they would tune it to make it right and work properly.
A common problem with the engine overheating is that after the rebuild some air is left in the radiator which has to be bled out. That Is the main reason why an engine would overheat.
The Process to Bleed Air Out of the System
The process is quite simple, it’s a classic car engine rebuild, not rocket science. Before starting make sure your engine is cool to the touch and not hot because coolant is pressurized and if it’s hot it will spray all over you which will not be good and can cause serious burn injuries. There is a drain plug for the radiator which you should locate. It is under the radiator at the corner and could be on either side. Once you have located the drain plug, place a container or anything to catch the old coolant. After you think all the coolant has been drained, start the car and that will push any coolant out of the system.
Next, you should check the amount of coolant your engine requires and get that amount of distilled water and fill the system with it. There is a chemical flush also available in local car shops and should be added to make it a better flush of coolant.
After that, you run the cargo for a quick 10 to 15-minute ride and keep an eye on the temperature gauge. If the temperature is on operating temperature (normal temperature while running) then that’s great! But if it gets too high you might not have drained the air out of the system properly. Turn on your heater to the max and if you feel that the air is not hot enough then that means there is air in your heater core and you might not have added enough water. After everything is gone smoothly, being back the container and open the drain plug along with the filler cap which would take out the distilled water and other contaminants that the chemical flush cleaned and run the engine to bleed out all the water.
Then get the recommended anti-freeze coolant for your car and fill it up. If the middle way it fills up, start the car and continue filling it up. If you want you can add an anti-rust and dealer additive that will prevent rust and leaks if there are any.
Last but not the least
Finally, finish off adding the coolant and close of the lid and start the car to check its temperature, go for a ride and blast the heater to the full to confirm that you did a job well done! If you still are left with your mind-boggling then let the professionals handle it!