A radiator hose prevents the overheating of the engine. It receives hot coolant in the radiator and returns it cooler back to the engine. If the coolant reservoir is full but the car engine is still overheating, this means that the radiator is not working properly. In other words, there is no pressure in the radiator hose to prevent overheating of coolant or to increase the boiling point of the coolant. Therefore, it is very important to understand no pressure in radiator hose- causes & troubleshooting. You also need to select the best radiator for your car during purchasing.
Overheating is the direct result of this faulty system because the cooling action is hampered. Either upper radiator hose or lower radiator hose, if not functioning up to the mark, an overheating of the engine can cause its self-destruct. We have discussed in detail in the section below.
No Pressure in Radiator Hose - Causes
1. Electrochemical Degradation
Due to the interaction of different metals, an electric charge is generated in the cooling system. This charge is then transferred to the radiator hose. These charges can create serious cracks in the hose. This results in no pressure within the hose because you can squeeze its ends to feel the spaces inside.
2. Bad Performance of Thermostat and Water Pump
If the thermostat’s performance is not proper, then the cooling system will have an idea when to release antifreeze into the radiator hose. Moreover, if there is a faulty water pump in the system, there will be no pressure in the radiator hose to receive and return the coolant.
3. Clogging and Corrosion of Hose
One reason for no pressure in the radiator is clogging or constriction in its run-off hose. This opens on to the coolant tank as a result of which the engine cools down. This will cause no pressure in the radiator pipe as the fluid will not return to the tank.
4. Faulty or Damaged Hose Cap
When the cooling system is not working well, you will find no pressure in the radiator hose which requires our attention. Another reason for such issues is that the radiator’s degraded or faulty pressure cap of is another cause of no pressure. With continuous use, they lose their rating which is around 14 to 16 psi under normal circumstances. This can eventually result in serious damage to the engine.
5. Kinked Hose and No Clamp Torque
A drastic decrease in radiator hose pressure may also occur due to kinked hose. This means that the hose has wave-like folds that can turn into cracks. These cracks become bigger with time, thus resulting in no pressure in the radiation hose. Moreover, another factor is not enough clamp torque. This means that the antifreeze drips around clamps.
6. Insufficient Coolant Level
Insufficient coolant levels can eventually result in no pressure in the hose radiator. This is because a low level can heat the engine, and heat can cause swelling in the radiator hose. The hose hardens with time, and cracks start to appear on its surface, thus it loses its ability to hold pressure. As a result, the whole cooling system hampers and the engine gets overheated as you drive the automobile.
Troubleshooting ( No Pressure in Radiator Hose )
1. Get the ECD-Resistant Hose
You can deal with no pressure problem in the cooling system by replacing it with an ECD-resistant and good quality hose such as Gates 22953 premium hose, GM 13251447 hose etc.. This would end the whole problem of no pressure in the cooling system. However, there is another solution to prevent it by improving the sealing of connectors. This can be done by using beaded connectors. Alloy fitting also helps with such hose issues.
2. Replace Thermostat, and Water Pump
If the thermostat and water pump are not functioning properly, then the only solution to fix the issue is to replace them with new ones. There is no way to repair them because once they go out of order, chances are very bleak to get them on track again. It is recommended that the replacement of these two must be a part of the cooling system’s regular maintenance so that other parts may work without any issue. For purchasing a quality water pump, you can check Gates or ACDelco Water pump.
3. Re-fill Radiator Coolant
When there is no pressure in the radiator hose due to clogging, all it takes to repair this problem is to flush and refill the coolant with better coolant like Zerex Antifreeze Coolant. This service is required periodically because, without flushing, different metals present in previous and new antifreeze will interact to cause corrosion in the thin hose and core of the heater. Eventually, the engine will overheat, and the same pressure problem will arise.
4. Buy New Hose Cap
If the pressure issue is due to a faulty or collapsed radiator hose cap, only a new cap can solve it. However, keep in mind that the new cap for the radiator hose must be of the same rating as the previous one. If you ignore the rating and buy anyone, you will not be able to fix the problem as the radiator hose’s function will be affected even more than it was with the faulty cap. A radiator pressure cap test regularly can help you prevent the sudden problem as it fails.
5. Invest in Quality Hoses
Well, to prevent kinked hose, try to use high-quality radiator hoses. with this simple practice, you can fix the problem of such blown radiators. However, to solve the clamping issue, tighten the clamps and connectors. Being of the vehicle owner, try to keep a regular check on your radiator hose because sometimes simpler issues like these can turn into a huge problem for the engine system.
6. Get Heat-Resistant Hose
The best way to prevent the hose from heating, and developing cracks is to buy the best quality. You also need to clean dirty radiators. This can remove your problem once and for all. They will cost you more than the normal ones, but this one-time investment will go a long way. The problem of changing it after every few months will be resolved too.
Accurate working of the radiator hose is what causes pressure build-up in the cooling system. Simple, standard maintenance practices are essential to proper functioning radiator hoses. You can follow the above-mentioned no pressure in radiator hose - causes & troubleshooting options for the problem of the radiator hose. With this information in mind, you can prevent damage caused due to this dysfunctionality of the radiator hose before it can destroy the engine completely.