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.
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
If a vehicle is overheating, a bad thermostat could be the problem, and a damaged thermostat housing is more likely to produce a coolant leak, either from a cracked or warped housing or a failed seal to the engine. The thermostat housing can be made of metal or plastic. And the housing can be a stand-alone part that is separate from the thermostat, or (on later model vehicles) can be integrated with the thermostat and replaced as a single unit.
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 a coolant leak in your 2017 Porsche 718 Cayman, begin with a comprehensive visual inspection of the vehicle. Look for any signs of coolant pooling beneath the car or around essential components like the radiator, hoses, and water pump. Next, check the coolant level in the reservoir; a consistent drop may indicate a leak. If these preliminary checks do not reveal the source of the problem, consider conducting a pressure test on the cooling system. This test involves pressurizing the system and observing for any pressure drops, which can help identify the leak's location. Additionally, thoroughly inspect all hoses and connections for signs of wear or damage, as these are common sources of leaks. Pay particular attention to the radiator, checking for any coolant stains or drips that could suggest a leak. Finally, remain vigilant for any white smoke emanating from the exhaust, as this could signal a more serious issue, such as coolant entering the combustion chamber due to a blown head gasket. By following this methodical approach, you can accurately diagnose and address any coolant leak issues, ensuring the longevity and optimal performance of your vehicle.
When dealing with coolant leaks in a 2017 Porsche 718 Cayman, it's crucial to understand the common problems that may arise. A faulty water pump is often a primary suspect, as it can fail to circulate coolant properly, leading to leaks. Additionally, a damaged or corroded radiator can compromise the cooling system, resulting in coolant escaping. Over time, the hoses that transport coolant can wear out, developing cracks or holes that contribute to leaks. It's also important to check the hose clamps; if they are loose or damaged, they may not secure the hoses adequately, allowing coolant to seep out. In more severe cases, a cracked engine block or a leaking heater core can be the source of the problem, both of which require immediate attention to prevent engine overheating and damage. Regular inspections and maintenance can help catch these issues early, ensuring your Porsche remains in optimal condition.
Addressing a coolant leak in your 2017 Porsche 718 Cayman is not just a matter of routine maintenance; it is a crucial step in safeguarding your vehicle's performance and longevity. Coolant plays a vital role in regulating engine temperature, and a leak can quickly escalate into overheating, leading to severe engine damage or even complete failure. For DIY enthusiasts, understanding the urgency of this issue is essential. Ignoring a coolant leak can compromise not only the engine but also other critical components, resulting in costly repairs that could have been avoided with prompt action. Moreover, a leaking coolant system can diminish your vehicle's overall efficiency and performance, affecting your driving experience. By addressing the leak as soon as it is detected, you not only protect your investment but also ensure that your Porsche continues to perform at its best. Therefore, if you notice any signs of a coolant leak, it is imperative to act swiftly to prevent further complications and maintain the health of your vehicle.
See what others are asking about their Porsche 718 Cayman. Get answers from RepairPal's community of auto experts and enthusiasts.
Read about related problems experienced by other Porsche 718 Cayman drivers like you.
