A bad radiator cap can sometimes be detected when coolant is leaking around the edges of the cap. Sometimes, it's possible to hear antifreeze bubbling when a radiator cap is bad. If this occurs, wait for the car to cook down before opening the hood. A bad radiator cap can also be tested with a pressure gauge.Continue Reading
When the pressure numbers on a pressure gauge start to drop while testing a radiator cap, it means the cap isn't working correctly. Unscrew the radiator cap, clean off any debris then retest it. If the radiator cap still shows a pressure drop, it needs to be replaced.
Another common radiator cap problem involves the spring-loaded plunger of the cap being jammed. When this occurs, coolant can't move between the cooling system and the overflow reservoir as it should. A visual inspection of the overflow reservoir should show whether this is happening. Another symptom of this problem is leakage of coolant around the radiator cap. If the cooling system has just been filled, however, the leakage may actually just be some spillage resulting from the refilling process.
Radiator caps are easy to replace. Just buy a new cap with the same pressure rating, and screw it in tightly. Make sure the car is completely cooled down before replacing a radiator cap.Learn more about Engine
Some tips of installing a block heater on an engine include draining the radiator and performing the procedure inside or when it's warm. Also be sure to wear gloves while draining the coolant to avoid any accidental spills or skin contact. Other tips include reading the instruction manual and becoming familiar with the layout of the engine.Full Answer >
Determine the location of a radiator coolant recovery tank leak by waiting until the system is cool, removing the coolant with a siphon, and looking for coolant or rust stains surrounding the leak. It is sometimes necessary to remove the recovery hoses and tank from the vehicle to find hidden leaks. Look for cracks near seams and around the brackets that connect the unit to the vehicle, where stress is greatest.Full Answer >
A car can overheat while idling if there is not enough coolant in the radiator or there is a malfunctioning fan, radiator or fan belt. Additionally, some cars have a fan clutch that may cause overheating.Full Answer >
Install a Cummins engine block heater by draining the radiator and removing the frost plug from the back of the engine block. Lubricate the O-rings that came with the block heater and place them around the end of the block heater element. Tighten the element to the recommended torque and run the cord to the front of the vehicle.Full Answer >