The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

The 2004 Porsche Cayenne is known for oil leaks, particularly from the valve cover gaskets and the oil separator.

The original plastic coolant pipes can crack and leak over time, often requiring replacement with more durable aluminum pipes.

The ignition coils in this model can fail, leading to misfires and poor engine performance.

The fuel pumps can become faulty, leading to starting issues or engine stalling.

The drive belt tensioner may fail, causing squealing noises or loss of power to auxiliary components.

The thermostat can fail, causing the engine to overheat or not reach optimal operating temperature.

Problems with the timing chain tensioner can lead to a rattling noise and potential engine damage if not addressed.

The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

Porsche 911 engines, especially older models like the 2004, are prone to oil leaks from various seals and gaskets, including the rear main seal and valve cover gaskets.

The 2004 Porsche 911 is known for potential IMS bearing failures, which can lead to catastrophic engine damage if not addressed.

Problems with the cooling system, such as radiator and water pump failures, can occur, leading to overheating and potential engine damage.

Some 911 engines may develop cylinder scoring, which can cause a loss of compression and increased oil consumption.

Ignition coil packs on the 2004 Porsche 911 can fail, leading to misfires and poor engine performance.

Vacuum leaks are common and can cause rough idling, poor acceleration, and overall reduced engine efficiency.

Faulty oxygen sensors can lead to poor fuel economy and increased emissions.

The timing chain tensioner can wear out, causing timing issues and potential engine damage if not replaced.

The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

Porsche 911 engines, especially older models like the 2004, are prone to oil leaks from various seals and gaskets, including the rear main seal and valve cover gaskets.

The 2004 Porsche 911 is known for potential IMS bearing failures, which can lead to catastrophic engine damage if not addressed.

Problems with the cooling system, such as radiator and water pump failures, can occur, leading to overheating and potential engine damage.

Some 911 engines may develop cylinder scoring, which can cause a loss of compression and increased oil consumption.

Ignition coil packs on the 2004 Porsche 911 can fail, leading to misfires and poor engine performance.

Vacuum leaks are common and can cause rough idling, poor acceleration, and overall reduced engine efficiency.

Faulty oxygen sensors can lead to poor fuel economy and increased emissions.

The timing chain tensioner can wear out, causing timing issues and potential engine damage if not replaced.

Porsche 911 engines, especially older models like the 2004, are prone to oil leaks from various seals and gaskets, including the rear main seal and valve cover gaskets.

The 2004 Porsche 911 is known for potential IMS bearing failures, which can lead to catastrophic engine damage if not addressed.

Problems with the cooling system, such as radiator and water pump failures, can occur, leading to overheating and potential engine damage.

Some 911 engines may develop cylinder scoring, which can cause a loss of compression and increased oil consumption.

Ignition coil packs on the 2004 Porsche 911 can fail, leading to misfires and poor engine performance.

Vacuum leaks are common and can cause rough idling, poor acceleration, and overall reduced engine efficiency.

Faulty oxygen sensors can lead to poor fuel economy and increased emissions.

The timing chain tensioner can wear out, causing timing issues and potential engine damage if not replaced.

The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

The 2004 Porsche Cayenne is known for oil leaks, particularly from the valve cover gaskets and the oil separator.

The original plastic coolant pipes can crack and leak over time, often requiring replacement with more durable aluminum pipes.

The ignition coils in this model can fail, leading to misfires and poor engine performance.

The fuel pumps can become faulty, leading to starting issues or engine stalling.

The drive belt tensioner may fail, causing squealing noises or loss of power to auxiliary components.

The thermostat can fail, causing the engine to overheat or not reach optimal operating temperature.

Problems with the timing chain tensioner can lead to a rattling noise and potential engine damage if not addressed.

The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

Porsche 911 engines, especially older models like the 2004, are prone to oil leaks from various seals and gaskets, including the rear main seal and valve cover gaskets.

The 2004 Porsche 911 is known for potential IMS bearing failures, which can lead to catastrophic engine damage if not addressed.

Problems with the cooling system, such as radiator and water pump failures, can occur, leading to overheating and potential engine damage.

Some 911 engines may develop cylinder scoring, which can cause a loss of compression and increased oil consumption.

Ignition coil packs on the 2004 Porsche 911 can fail, leading to misfires and poor engine performance.

Vacuum leaks are common and can cause rough idling, poor acceleration, and overall reduced engine efficiency.

Faulty oxygen sensors can lead to poor fuel economy and increased emissions.

The timing chain tensioner can wear out, causing timing issues and potential engine damage if not replaced.

The 2004 Porsche Cayenne with a V6 engine is known for potential oil leaks, often from the valve cover gaskets or the rear main seal.

Early models of the Cayenne, including the 2004, often experience failure of the original plastic coolant pipes, leading to coolant leaks and potential engine overheating.

This model is prone to ignition coil failures, which can cause misfires, rough idling, and poor overall engine performance.

Issues with the timing chain tensioner can lead to a rattling noise on startup and potential timing problems if not addressed.

Problems with the Positive Crankcase Ventilation (PCV) valve can lead to oil consumption issues and poor engine performance.

The fuel pump in the 2004 Cayenne can fail, leading to stalling, hard starts, and loss of power.

The thermostat may fail, causing the engine to overheat or run too cool, affecting performance and fuel economy.

This sensor can fail or become dirty, leading to poor engine performance, rough idling, and reduced fuel efficiency.

Porsche 911 engines, especially older models like the 2004, are prone to oil leaks from various seals and gaskets, including the rear main seal and valve cover gaskets.

The 2004 Porsche 911 is known for potential IMS bearing failures, which can lead to catastrophic engine damage if not addressed.

Problems with the cooling system, such as radiator and water pump failures, can occur, leading to overheating and potential engine damage.

Some 911 engines may develop cylinder scoring, which can cause a loss of compression and increased oil consumption.

Ignition coil packs on the 2004 Porsche 911 can fail, leading to misfires and poor engine performance.

Vacuum leaks are common and can cause rough idling, poor acceleration, and overall reduced engine efficiency.

Faulty oxygen sensors can lead to poor fuel economy and increased emissions.

The timing chain tensioner can wear out, causing timing issues and potential engine damage if not replaced.

The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

The 2004 Porsche 911 is known for oil leaks, particularly from the rear main seal and the intermediate shaft (IMS) bearing.

Intermediate Shaft (IMS) bearing failure is a common issue, which can lead to catastrophic engine damage if not addressed.

Coolant leaks, especially from the coolant expansion tank and the water pump, are common in this model.

Rear Main Seal (RMS) failure is another prevalent issue, often leading to oil leaks.

Fuel injectors can become clogged or fail, leading to poor engine performance and misfires.

Some engines suffer from cylinder scoring, which can lead to reduced performance and increased oil consumption.

Worn or faulty spark plugs can cause misfires and reduced engine efficiency.

The alternator may fail prematurely, causing charging system issues.

Failure of the air-oil separator can lead to excessive oil consumption and smoke from the exhaust.

The 2004 Porsche Cayenne is known for oil leaks, particularly from the valve cover gaskets and the oil separator.

The original plastic coolant pipes can crack and leak over time, often requiring replacement with more durable aluminum pipes.

The ignition coils in this model can fail, leading to misfires and poor engine performance.

The fuel pumps can become faulty, leading to starting issues or engine stalling.

The drive belt tensioner may fail, causing squealing noises or loss of power to auxiliary components.

The thermostat can fail, causing the engine to overheat or not reach optimal operating temperature.

Problems with the timing chain tensioner can lead to a rattling noise and potential engine damage if not addressed.

Porsche 911 models, especially older ones, are known for developing oil leaks due to worn seals or gaskets.

The 2004 Porsche 911 can suffer from coolant pipe failures, leading to leaks and potential engine overheating.

The intermediate shaft (IMS) bearing can fail, which may cause catastrophic engine damage if not addressed.

Issues with ignition coils or spark plugs can cause rough idling or engine misfires.

Radiator or water pump failures can occur, leading to overheating issues.

The valve cover gaskets may wear out and cause oil leaks.

Over time, carbon deposits can build up in the engine, affecting performance and efficiency.

The timing chain tensioner can fail, leading to potential engine timing issues and damage.

The 2004 Porsche Cayenne is known for oil leaks, particularly from the valve cover gaskets and the oil separator.

The original plastic coolant pipes can crack and leak over time, often requiring replacement with more durable aluminum pipes.

The ignition coils in this model can fail, leading to misfires and poor engine performance.

The fuel pumps can become faulty, leading to starting issues or engine stalling.

The drive belt tensioner may fail, causing squealing noises or loss of power to auxiliary components.

The thermostat can fail, causing the engine to overheat or not reach optimal operating temperature.

Problems with the timing chain tensioner can lead to a rattling noise and potential engine damage if not addressed.

Porsche 911 engines, especially older models like the 2004, are prone to oil leaks from various seals and gaskets, including the rear main seal and valve cover gaskets.

The 2004 Porsche 911 is known for potential IMS bearing failures, which can lead to catastrophic engine damage if not addressed.

Problems with the cooling system, such as radiator and water pump failures, can occur, leading to overheating and potential engine damage.

Some 911 engines may develop cylinder scoring, which can cause a loss of compression and increased oil consumption.

Ignition coil packs on the 2004 Porsche 911 can fail, leading to misfires and poor engine performance.

Vacuum leaks are common and can cause rough idling, poor acceleration, and overall reduced engine efficiency.

Faulty oxygen sensors can lead to poor fuel economy and increased emissions.

The timing chain tensioner can wear out, causing timing issues and potential engine damage if not replaced.

The 2004 Porsche Cayenne is known for oil leaks, particularly from the valve cover gaskets and the oil separator.

The original plastic coolant pipes can crack and leak over time, often requiring replacement with more durable aluminum pipes.

The ignition coils in this model can fail, leading to misfires and poor engine performance.

The fuel pumps can become faulty, leading to starting issues or engine stalling.

The drive belt tensioner may fail, causing squealing noises or loss of power to auxiliary components.

The thermostat can fail, causing the engine to overheat or not reach optimal operating temperature.

Problems with the timing chain tensioner can lead to a rattling noise and potential engine damage if not addressed.