Symptoms of a Bad Mazda B4000 Radiator
The Mazda B4000 radiator is there to give your car's engine the ability to maintain a specified operating temperature. If this component goes bad, then the entire cooling system becomes compromised, and it can cause serious mechanical damage to your vehicle. The good news is, you can avoid this and save a lot of money on repair bills by keeping an eye out for these three common symptoms.
Low coolant levels
Low coolant level is generally a sign of a coolant leak. Check the fins in the radiator as they may be torn, which then causes the fluid to leak out as it is flowing up and out through the upper radiator hose. A coolant leak can cause your Mazda B4000 to overheat. An easy way to diagnose this problem is to use a pressure tester, which you can lease from an auto shop. By applying pressure to the coolant system, you will find where the leak is through the tester.
Murky or discolored coolant
If the coolant has a muddy appearance when you inspect it, then the radiator may have a clogged fin. Some inexpensive coolants can leave small deposits in the component, causing the fins to clog and prevent the fluid to flow through the motor. To push out any blockage, use a flush kit on your radiator. However, if this does not work and the component is really working badly, you might have to replace it.
Cool spots on your radiator are usually a sign of an internal blockage. To check where exactly the cool spots are, start the car and let it run. As the engine begins to warm up, feel the outside radiator fins with your hands. The entire component should heat up as hot fluid passes along inside, but if you feel hot and cold spots on the fins, then the fluid might not be flowing correctly. The cold areas are usually the ones that are clogged. To fix this, you can also flush the radiator, but again, if the blockage is too huge and it can't simply be flushed out, then you will have to replace the component.