Honda Civic Del Sol Radiator Overflow Tank
Diagnosing Problems with Your Honda Civic Del Sol Radiator Overflow Tank
Modern cars are equipped with an expansion tank that catches excess coolant when the valve in the radiator cap releases pressure. The function of your Honda Civic Del Sol radiator overflow tank is to capture drained coolant. Older cars used to survive without this component; car owners used to install a bottle next to the radiator to serve this function. But those days are long gone. The radiator overflow tank does a better job-it does not only catch excess coolant, but it also siphons the coolant back in to the radiator as its temperature drops. When the expansion tank develops problems, you can diagnose and troubleshoot them by following the steps below:
Coolant drains out onto the ground
When you get out of your car after driving it and notice that coolant is draining onto the ground, start checking your radiator overflow tank for problems. Some tanks are made of plastic, which are prone to cracking. Sludge and residue might also have formed inside the tank, contaminating the excess coolant. This coolant will still find its way back to the radiator, and if it's unclean, it can damage other important car parts. When flushing the cooling system, clean out the overflow tank as well. This won't take a lot of your time.
Steam pours from beneath the hood of the car.
When you notice that steam or light smoke is coming out from beneath the hood of your car, one component you should start checking into is the radiator overflow tank. Steam is produced when there is an antifreeze leak, and the expansion tank may have developed a hole or a crack that's letting coolant out. Fix or replace the overflow tank once you have determined it is not a problem with the upper or lower radiator hoses, the radiator cap, or the radiator itself. These are some of the most common sources of leakage.
The overflow tank is always empty after driving.
Although this is not directly attributed to a defective overflow tank, this is a problem closely associated with it. The radiator filler neck or some of its parts may be compromised. A broken head gasket may also be the culprit in this case. However, it could also mean a leak in the overflow tank that's causing all the excess coolant to seep out.