The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.
When the head gasket begins to fail, the engine may have no symptoms at all. They only begin to occur when the leak has reached an engine oil passage, engine coolant passage or the engine cylinder.
When that happens, the engine may be very difficult to start, and run roughly when idling. There may be oil or coolant leaking, and the engine may begin to overheat, or at least run hot. At this point, there may be coolant in the engine oil pan — this will look creamy and lighter in color than the oil. Also, the radiator or engine coolant reservoir may have a gurgling sound, the presence engine oil, or smell of combustion. And the check engine light will come on.
The coolant being burned in the engine will produce white exhaust that smells sweet, like engine coolant. When the head gasket fails completely, the engine will overheat within minutes of starting, will stall and then won't restart.
A failing heater core may cause the car's interior to smell like engine coolant. The smell will become worse when the heater is turned on. The engine may also begin to run hotter until the vehicle is repaired.
The worst-case scenario is the engine overheating, which can cause extensive engine damage.
If the heater core is clogged, the air that blows when the heater is turned on will not be very hot.
Problems with the intake manifold gasket can create the following symptoms:
» LEARN MORE: Intake manifold gasket symptoms
A failing radiator can cause the engine to run hot or overheat. Most radiators are made of metal and plastic. The plastic parts can become brittle and crack over time, causing a leak of coolant (typically green or pink in color). All manufacturers have a recommended service interval for coolant renewal. As the coolant ages, the additives breakdown and being to form solid deposits. These deposits will build up in the passages of the cooling system and will eventually clog components, including the radiator. A leaking or clogged radiator must be replaced. Some automatic transmission cars will also have a transmission cooler integrated into the radiator. Lines going to and from the transmission circulate transmission fluid to help cool the transmission in heavy duty applications such as towing or off-roading. If this integrated cooler fails, it can allow transmission fluid and coolant to mix. This will causing shifting issues in addition to overheating.
A coolant leak may be noted from the hoses. Coolant hoses can be damaged by oil leaks, or age. This will lead to swelling or cracking, it is suggested to replace the hoses before they begin leaking to avoid potential overheating.
The bad thermostat can cause two different sets of problems, depending on whether it's stuck open or stuck closed.
A thermostat that is stuck open can cause the engine to run colder than normal and turn on the check engine light. It may also cause poor fuel mileage and the heater to blow cool air.
A thermostat that is stuck closed will cause the vehicle to overheat. If a new thermostat doesn't resolve engine temperature problems, the cooling system needs to be checked for other issues.
» LEARN MORE: Signs of a bad thermostat, and how to fix it
The two most common signs of a bad pump are leaks and noises.
Leaking water pumps can result in damage to the drive and timing belts, and cause the engine to overheat. A failed water pump can be caused by other problems in the cooling system, such as a bad thermostat, radiator or head gasket.
To effectively diagnose and fix a coolant leak in your 2015 Mitsubishi Mirage, start by visually inspecting the area beneath your vehicle for any signs of coolant, such as puddles or stains. This initial check can help you identify the general location of the leak. Next, conduct a pressure test on the cooling system, which is a crucial step in pinpointing the exact source of the leak. While performing these checks, pay close attention to the radiator cap, as a damaged cap can often lead to leaks. Inspect all hoses and connections for any signs of wear, cracks, or loose fittings, and replace any components that appear damaged. Additionally, examine the water pump and radiator for leaks or signs of deterioration, as these are common culprits in coolant loss. Once you have identified the source of the leak, proceed with the necessary repairs or replacements, whether that involves fixing a hose or replacing a gasket. After addressing the issue, refill the coolant reservoir with the appropriate mixture and start the vehicle to monitor the system for any further leaks, ensuring the temperature gauge remains stable. Regular maintenance checks on your cooling system will help prevent future leaks and keep your vehicle running smoothly.
When dealing with coolant leaks in a 2015 Mitsubishi Mirage, it's essential to understand the common culprits that may be at play. One of the primary issues is damaged hoses, which can develop cracks or become worn over time, leading to leaks. Additionally, a faulty radiator is another frequent source of coolant loss; corrosion or physical damage can compromise its integrity. The water pump, responsible for circulating coolant, can also fail or develop leaks, resulting in noticeable coolant loss. Don't overlook the radiator cap, as a cracked or malfunctioning cap can disrupt the pressure in the cooling system, causing leaks. Lastly, a loose or damaged coolant reservoir can contribute to coolant escaping from the system. By being aware of these potential issues, DIYers can take proactive steps to inspect and address coolant leaks, ultimately preventing overheating and protecting the engine from damage.
Addressing a coolant leak in a 2015 Mitsubishi Mirage is of utmost urgency due to the significant risks associated with engine overheating and potential damage. Coolant plays a vital role in maintaining the engine's temperature, and a leak can quickly lead to overheating, which may result in severe engine failure and costly repairs. Ignoring the symptoms of a coolant leak not only jeopardizes the engine's integrity but can also affect other essential components, such as the water pump and radiator. As the coolant level drops, the engine's ability to cool itself diminishes, increasing the likelihood of seizing or sustaining irreversible damage. Therefore, for anyone considering a DIY approach, it is crucial to act swiftly upon noticing any signs of a coolant leak to ensure the vehicle remains safe and operational, ultimately saving time and money in the long run.
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