Helpful Ideas To Keep Your Engine Cool

1 Always install a new radiator.  Sometimes a radiator looks ok.  But the truth is that the tiny little cooling tubes are partially clogged.  In many cases damage is caused when the installing mechanic removes the radiator prior to installation and sets the radiator in his shop dry for 3 days, the tiny coolant passages dry out, and calcify causing restriction and overheating!
2 Install a new radiator cap.  A cap that hold 14 LBS of pressure raises your coolant boiling point 10° so replace it with the proper pressure cap.  Always use a good quality antifreeze.
3 When filling cooling system, remove trapped air from your block.  This is extra important when you are installing a new or remanufactured engine with a totally dry block.  The easiest way to do this is to remove your highest heater hose, fill cooling system and watch air bubbles percolate out of hose when all air stops and nothing but coolant comes out.  Block should be full.  Start vehicle and monitor your engine with gauge!
4 Install new water pump.  Be sure you have the proper application.  Just because a pump bolts up doesn't mean that its correct.  Remember a serpentine system turns in reverse!
5 Replace fan or fan clutch.  When a fan is working properly it will pull a tremendous amount of air through radiator.  Again caution on serpentine systems, fans also turn in reverse, if its an electric fan check all sensors and wiring.
6 Fan shroud: Be sure shroud is making a good seal around fan and radiator.  Again you want to pull as much air through radiator as possible!
7 Hoses and Clamps:  Install new hoses and clamps.  A loose connection can pull air into system.  Always be sure to have a coil spring in lower radiator hose, this hose will collapse and restrict cooling at highway speeds if it is not in there.
8 Install a new thermostat.  If all other parts of your cooling system are working correctly then the thermostat will help the engine warm up faster, and will help maintain a constant temp by opening and closing as needed.  Be sure not to use too much silicone on gaskets, it can clog your thermostat.
9 Always use a good temperature gauge, not an idiot light!  This way you can properly monitor your cooling system and prevent overheating before it causes damage.
10 Of course there are other reasons for overheating such as cracked heads, blown gaskets, etc.  But these are usually the result not the cause.
11 Caution: Pressurized hot coolant can reach 250° and cause serious burns.

 

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