Your radiator has the important task of helping to maintain the operating temperature of the engine. As a result, the radiator and coinciding lines can become extremely hot. While hot, the coolant system is pressurized, so removing the radiator cap can expel heated coolant and steam that can be dangerous. Pull the car into the space or garage bay that you will be working on it from and allow it to cool for a few hours before beginning this project. Open the hood after you park the vehicle to allow the heat to dissipate unimpeded. Be prepared to wait for a few hours for your engine to cool enough to work on. Because coolant systems are pressurized, it's important to wear safety glasses when working on your radiator. Although the engine should be cool to the touch before you proceed, coolant systems can be under a great deal of pressure and may expel gas when you open the cap. You also may need to climb under the car at some point during this project and safety glasses will protect your eyes from falling debris that is caught in the vehicle's undercarriage. Always wear safety glasses when working under the vehicle. You may also choose to wear gloves to protect your hands from pinches and any remaining heat. It will be much easier to locate the leak in your radiator after it's clean of old grime and coolant. Use a hose to spray the radiator and surrounding components so you can know for sure that any new coolant you see in the engine bay after you start the car has leaked since you washed it. As you wash the radiator, look for any signs of cracks in the radiator itself or on either of its end tanks. It is unnecessary to use soap when washing your radiator. Use paper towels to wipe away any areas of excessive grime. One of the two methods you can use to identify a leak in your radiator is to start the engine once it's clean. With the engine running, look closely at your radiator and at the surrounding engine for signs of a leak. You may see steam or fluid spraying out of a leak, coolant or water dripping down the radiator or piping, or hear the hissing of a leak that you aren't able to see from your vantage point. This method can help to point you in the right direction, but may require you to shut the car off again to gain visibility on harder to spot areas of the radiator. Look for fluid or gas spraying from cracks in the radiator. Look for drops of coolant running downward from a leak above them. Listen for hissing coming from the area around the radiator for leaks you can't see. You can purchase a coolant system pressure tester at your local auto parts store. To use it, make sure the engine is cool and remove either the radiator or pressure cap from your coolant system. Install the tester in place of the cap using the included adaptor. Once the tester is secured and the system is once again sealed, use the tester to pump ten pounds of pressure into the coolant system. When the gauge indicates a loss of pressure, that means the pressure is currently leaking from the system. Follow the sound of the air leaking from the crack to locate it. Be careful not to add more than 10 to 15 pounds of pressure (psi) to your coolant system. More than that could result in damage and even create more leaks. Your cooling system operating pressure should be listed on the radiator cap and you shouldn't exceed this number by much when pressure testing. Look for any leaks that may be present on coolant lines as well as the radiator as they may be susceptible to cracking over time.

Summary: Allow the engine to cool. Put on the appropriate safety gear. Wash the radiator with a hose. Start the car and look for new signs of leaks. Use a pressure tester to locate leaks.

Before you can spool the line, remove the top part of the reel. Twist is counterclockwise until it's loose enough to pull off the reel. Some beginner-friendly models have a button you can press to pop off this cap. Unwind any old line left over by spinning the handle. Close-faced and Spincast are different names for the same reel. You'll know you have one if it has this cover you need to unscrew to reach the reel's spool. Look for the small rings hanging off the bottom of the rod. Starting at the rod's tip, run the new line through the holes towards the reel. Pick up the cap and run the line through the hole in the top. If you don't do this now, you won't be able to get the cap on later when you need it. Don't attach the cap to the rest of the reel yet. Like with the other types of rods, the rod's spool will have a small hollow in the middle where the line rests. Wrap it around this hollow twice so that you'll have enough to line to tie in place. Always make sure the line goes on the same way the reel rotates. If it rotates clockwise, the line should be wrapped around it counterclockwise. The direction of the rotation depends on the fishing pole. Knot it against the reel so the line doesn't come undone. You can do this with a slip knot, clinch knot, or arbor knot. Make sure the line is securely tied and tight before you move on. Use your free hand to apply a light amount of pressure on the line as you spool it onto the reel. This will keep the line tense, preventing it from tangling. Hold the line taut between your thumb and index finger, applying a little bit of pressure to keep the line straight. Turn the handle in the same direction you loaded the line, which should have been the same direction the reel normally rotates to unspool the line. For example, if you spooled the line counterclockwise, crank the handle counterclockwise. Load the line, but don't fill the reel completely. The line should be about 18 inch (0.32cm) below the spool's rim. The line should hang from the rest of the rod with no slack. Adding too much can make the line come undone, so you'll have to spool it all over again. Grab the reel's cover, which should have already been threaded with the new line. Twist it clockwise onto the reel to secure it in place. If you left the cover off, unwind all of the thread. You'll need a lot of space for this, so try walking around and hanging the line on fences or other objects so it stays untangled. Then spool the line through the cover and onto the reel. Go back to the tip of the rod. Get a pair of scissors and snip the line beyond the tip's end. Avoid clipping the line that's hanging from the line guides under the rod.
Summary: Unscrew the face of the reel. Insert the line through line guides at the rod's tip. Push the line into the hole on the reel's cap. Wind the line around the spool in the same direction the reel turns. Tie the end of the line into a knot. Pinch the line between your thumb and index finger. Crank the handle to load the line. Spool the line until the reel is almost full. Put the cover back on the reel. Cut the fishing line off the spool.