Common in older Toyota engines, caused by worn gaskets or seals.

Needs regular replacement; failure can cause severe engine damage.

Often due to aging radiator or hoses, leading to overheating.

Common issue, can lead to oil leaks and engine misfires.

Can cause rough idling, poor fuel economy, and engine misfires.

Can lead to poor engine performance and fuel inefficiency.

Affects engine performance and fuel efficiency.

Can cause poor acceleration and stalling problems.

Can lead to exhaust leaks and reduced engine performance.

Affects fuel mixture and emissions, leading to poor performance.

The 2UZ-FE engine is known for developing oil leaks, especially around the valve cover gaskets and camshaft seals.

The timing belt on this engine should be replaced every 90,000 miles. Failure to do so can result in belt wear or breakage, leading to severe engine damage.

This engine can develop leaks at the intake manifold gasket, which can cause rough idling and poor performance.

The exhaust manifolds on the 2UZ-FE are prone to cracking, which can result in exhaust leaks and reduced engine performance.

Fuel injectors on this engine can become clogged or fail, leading to poor fuel economy and engine misfires.

Radiator and water pump failures are common and can lead to engine overheating if not addressed in a timely manner.

The 2UZ-FE engine can experience spark plug wear or fouling, which can cause misfires and reduced fuel efficiency. Regular replacement is necessary.

The throttle body can become dirty or fail, leading to stalling, rough idling, and poor throttle response.

The 2UZ-FE engine is known for developing oil leaks, particularly from the valve cover gaskets and oil pan gasket.

This engine uses a timing belt, which can wear out and potentially break if not replaced at recommended intervals, leading to significant engine damage.

Some owners report higher-than-normal oil consumption, which may be due to worn piston rings or valve seals.

Issues with oxygen sensors and mass airflow sensors can occur, leading to poor engine performance and reduced fuel efficiency.

Radiator or water pump failures can lead to overheating, potentially causing severe engine damage.

A faulty crankshaft position sensor can cause the engine to stall or fail to start.

Over time, the exhaust manifold may crack, causing exhaust leaks and reducing engine performance.

The 2UZ-FE engine is known for oil leaks, often from the valve cover gaskets or the front crankshaft seal.

The 2UZ-FE engine uses a timing belt, which can wear out and require replacement typically around every 90,000 miles to prevent engine damage.

Fuel injectors may become clogged or malfunction, leading to rough idling or poor fuel economy.

Carbon buildup in the throttle body can cause erratic idling and throttle response issues.

Radiator or water pump failures can occur, leading to overheating if not addressed promptly.

Over time, spark plugs can wear out, resulting in misfires, decreased performance, and poor fuel efficiency.

The MAF sensor can fail, causing engine performance issues and triggering the check engine light.

The exhaust manifolds on the 2UZ-FE engine can develop cracks, leading to exhaust leaks and increased engine noise.

Oxygen sensors can wear out, leading to incorrect fuel mixture and reduced engine efficiency.

The 2UZ-FE engine in the 2006 Lexus GX often experiences oil leaks from the valve cover gaskets, oil pan, or front and rear crankshaft seals.

The timing belt in the 2UZ-FE engine has a limited lifespan and can wear out, potentially leading to engine damage if not replaced at recommended intervals.

The exhaust manifolds on this engine are prone to cracking, which can cause exhaust leaks and affect engine performance.

Fuel injectors in the 2UZ-FE engine can become clogged or fail, leading to poor engine performance, misfires, and reduced fuel efficiency.

Issues with the radiator, water pump, or thermostat can lead to overheating, which can cause significant engine damage if not addressed promptly.

Over time, carbon deposits can accumulate in the intake manifold and on the intake valves, leading to reduced engine performance and efficiency.

The vacuum hoses and lines in the 2UZ-FE engine can develop leaks, leading to rough idling, poor acceleration, and overall decreased engine performance.

The 2UZ-FE engine is known for oil leaks, often from the valve cover gaskets or the front crankshaft seal.

The 2UZ-FE engine uses a timing belt, which can wear out and require replacement typically around every 90,000 miles to prevent engine damage.

Fuel injectors may become clogged or malfunction, leading to rough idling or poor fuel economy.

Carbon buildup in the throttle body can cause erratic idling and throttle response issues.

Radiator or water pump failures can occur, leading to overheating if not addressed promptly.

Over time, spark plugs can wear out, resulting in misfires, decreased performance, and poor fuel efficiency.

The MAF sensor can fail, causing engine performance issues and triggering the check engine light.

The exhaust manifolds on the 2UZ-FE engine can develop cracks, leading to exhaust leaks and increased engine noise.

Oxygen sensors can wear out, leading to incorrect fuel mixture and reduced engine efficiency.

The 2UZ-FE engine is known for developing oil leaks, especially around the valve cover gaskets and camshaft seals.

The timing belt on this engine should be replaced every 90,000 miles. Failure to do so can result in belt wear or breakage, leading to severe engine damage.

This engine can develop leaks at the intake manifold gasket, which can cause rough idling and poor performance.

The exhaust manifolds on the 2UZ-FE are prone to cracking, which can result in exhaust leaks and reduced engine performance.

Fuel injectors on this engine can become clogged or fail, leading to poor fuel economy and engine misfires.

Radiator and water pump failures are common and can lead to engine overheating if not addressed in a timely manner.

The 2UZ-FE engine can experience spark plug wear or fouling, which can cause misfires and reduced fuel efficiency. Regular replacement is necessary.

The throttle body can become dirty or fail, leading to stalling, rough idling, and poor throttle response.

The 2UZ-FE engine is known for developing oil leaks over time, particularly from the valve cover gaskets and the front crankshaft seal.

The 2UZ-FE engine uses a timing belt which requires regular replacement. If neglected, it can lead to severe engine damage.

The V-shaped configuration can sometimes lead to cracks in the exhaust manifold, causing exhaust leaks and reduced engine performance.

Over time, the fuel injectors can become clogged or fail, leading to poor fuel economy and engine misfires.

As with most high-mileage engines, the spark plugs can wear out and need regular replacement to maintain engine performance.

Carbon deposits can accumulate in the throttle body, causing poor acceleration and idle issues.

Coolant leaks from the radiator, water pump, or hoses can be common and should be addressed to prevent overheating.

The MAF sensor can become dirty or fail, leading to incorrect air-fuel mixture and reduced engine performance.

This can occur in the 2UZ-FE engine due to poor maintenance or lack of regular oil changes, leading to reduced engine performance and potential damage.

The 2UZ-FE engine uses a timing belt that needs regular replacement. If it fails, it can cause severe engine damage.

Overheating issues can lead to head gasket failure, which can cause coolant leaks and engine overheating.

Worn-out or faulty spark plugs can lead to misfires and reduced engine performance.

Dirty or clogged fuel injectors can affect fuel delivery, leading to rough idling and poor acceleration.

Vacuum leaks can cause a variety of issues including rough idling, stalling, and poor fuel economy.

The knock sensor in the 2UZ-FE engine can fail, leading to poor engine performance and reduced fuel efficiency.

Cracks in the exhaust manifold can cause exhaust leaks, leading to reduced engine performance and increased emissions.

The 2UZ-FE engine is known for developing oil leaks, particularly from the valve cover gaskets and oil pan gasket.

The 2UZ-FE engine uses a timing belt that requires regular replacement. If not replaced at the recommended intervals, it can lead to engine failure.

This engine is prone to developing cracks in the exhaust manifold, which can cause exhaust leaks and reduce engine performance.

Over time, carbon can build up in the intake manifold and throttle body, leading to reduced engine efficiency and performance.

Issues with the radiator and cooling system can lead to engine overheating, which is a common problem in older models.

The ignition coils in the 2UZ-FE engine can fail prematurely, leading to misfires and poor engine performance.

The fuel injectors may become clogged or fail, causing poor fuel economy and engine performance issues.

The knock sensors in the 2UZ-FE can fail, leading to engine knocking and reduced performance.

The 2UZ-FE engine is known for developing oil leaks, especially around the valve cover gaskets and camshaft seals.

The timing belt on this engine should be replaced every 90,000 miles. Failure to do so can result in belt wear or breakage, leading to severe engine damage.

This engine can develop leaks at the intake manifold gasket, which can cause rough idling and poor performance.

The exhaust manifolds on the 2UZ-FE are prone to cracking, which can result in exhaust leaks and reduced engine performance.

Fuel injectors on this engine can become clogged or fail, leading to poor fuel economy and engine misfires.

Radiator and water pump failures are common and can lead to engine overheating if not addressed in a timely manner.

The 2UZ-FE engine can experience spark plug wear or fouling, which can cause misfires and reduced fuel efficiency. Regular replacement is necessary.

The throttle body can become dirty or fail, leading to stalling, rough idling, and poor throttle response.

The 2UZ-FE engine in the 2006 Lexus GX often experiences oil leaks from the valve cover gaskets, oil pan, or front and rear crankshaft seals.

The timing belt in the 2UZ-FE engine has a limited lifespan and can wear out, potentially leading to engine damage if not replaced at recommended intervals.

The exhaust manifolds on this engine are prone to cracking, which can cause exhaust leaks and affect engine performance.

Fuel injectors in the 2UZ-FE engine can become clogged or fail, leading to poor engine performance, misfires, and reduced fuel efficiency.

Issues with the radiator, water pump, or thermostat can lead to overheating, which can cause significant engine damage if not addressed promptly.

Over time, carbon deposits can accumulate in the intake manifold and on the intake valves, leading to reduced engine performance and efficiency.

The vacuum hoses and lines in the 2UZ-FE engine can develop leaks, leading to rough idling, poor acceleration, and overall decreased engine performance.

The 2UZ-FE engine is known to develop oil leaks from valve cover gaskets and front crankshaft seals as it ages.

This engine uses a timing belt that should be replaced at regular intervals (typically every 90,000 miles) to prevent failure, which can lead to severe engine damage.

Some owners report higher-than-normal oil consumption, which can be due to worn piston rings or valve seals.

Oxygen sensors can fail over time, leading to poor fuel economy and increased emissions.

Carbon buildup in the throttle body can cause rough idling and poor acceleration.

The knock sensors can fail, leading to poor engine performance and triggering the check engine light.

Although less common, head gasket failure can occur, leading to coolant leaks and engine overheating.

Spark plugs and ignition coils can wear out and need replacement to maintain optimal engine performance.

Clogged or malfunctioning fuel injectors can cause misfires and poor engine performance.

The 2UZ-FE engine is known for oil leaks, often from the valve cover gaskets or the front crankshaft seal.

The 2UZ-FE engine uses a timing belt, which can wear out and require replacement typically around every 90,000 miles to prevent engine damage.

Fuel injectors may become clogged or malfunction, leading to rough idling or poor fuel economy.

Carbon buildup in the throttle body can cause erratic idling and throttle response issues.

Radiator or water pump failures can occur, leading to overheating if not addressed promptly.

Over time, spark plugs can wear out, resulting in misfires, decreased performance, and poor fuel efficiency.

The MAF sensor can fail, causing engine performance issues and triggering the check engine light.

The exhaust manifolds on the 2UZ-FE engine can develop cracks, leading to exhaust leaks and increased engine noise.

Oxygen sensors can wear out, leading to incorrect fuel mixture and reduced engine efficiency.

The 2UZ-FE engine is known for developing oil leaks, particularly from the valve cover gaskets and oil pan gaskets over time.

This engine uses a timing belt that requires periodic replacement, typically around 90,000 miles. Failure to do so can result in severe engine damage.

Some owners report that the engine consumes more oil than expected, which can be due to worn piston rings or valve seals.

Radiator and water pump failures can lead to coolant leaks, which, if not addressed, can cause the engine to overheat.

Ignition coil packs can fail, leading to engine misfires. This is often accompanied by a check engine light and rough running conditions.

Over time, carbon can build up on the intake valves and combustion chambers, leading to reduced engine performance and fuel efficiency.

This can occur in the 2UZ-FE engine due to poor maintenance or lack of regular oil changes, leading to reduced engine performance and potential damage.

The 2UZ-FE engine uses a timing belt that needs regular replacement. If it fails, it can cause severe engine damage.

Overheating issues can lead to head gasket failure, which can cause coolant leaks and engine overheating.

Worn-out or faulty spark plugs can lead to misfires and reduced engine performance.

Dirty or clogged fuel injectors can affect fuel delivery, leading to rough idling and poor acceleration.

Vacuum leaks can cause a variety of issues including rough idling, stalling, and poor fuel economy.

The knock sensor in the 2UZ-FE engine can fail, leading to poor engine performance and reduced fuel efficiency.

Cracks in the exhaust manifold can cause exhaust leaks, leading to reduced engine performance and increased emissions.

The 2UZ-FE engine in the 2006 Lexus GX often experiences oil leaks from the valve cover gaskets, oil pan, or front and rear crankshaft seals.

The timing belt in the 2UZ-FE engine has a limited lifespan and can wear out, potentially leading to engine damage if not replaced at recommended intervals.

The exhaust manifolds on this engine are prone to cracking, which can cause exhaust leaks and affect engine performance.

Fuel injectors in the 2UZ-FE engine can become clogged or fail, leading to poor engine performance, misfires, and reduced fuel efficiency.

Issues with the radiator, water pump, or thermostat can lead to overheating, which can cause significant engine damage if not addressed promptly.

Over time, carbon deposits can accumulate in the intake manifold and on the intake valves, leading to reduced engine performance and efficiency.

The vacuum hoses and lines in the 2UZ-FE engine can develop leaks, leading to rough idling, poor acceleration, and overall decreased engine performance.

The 2UZ-FE engine is known for developing oil leaks, particularly from the valve cover gaskets and the front crankshaft seal.

The timing belt in the 2UZ-FE engine should be replaced regularly (typically every 90,000 to 100,000 miles) to prevent engine damage.

Some users have reported issues with the engine consuming more oil than expected, which could be due to worn piston rings or valve seals.

The exhaust manifolds on the 2UZ-FE engine can develop cracks over time, causing exhaust leaks and noise.

Build-up in the throttle body can lead to poor idling and acceleration problems, requiring cleaning or replacement.

Radiator and water pump failures have been reported, leading to engine overheating if not addressed promptly.

The 2UZ-FE engine can suffer from premature spark plug wear, necessitating more frequent changes.

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

Knock sensors can fail, causing the engine to run inefficiently and potentially triggering the check engine light.

The 2UZ-FE engine is known for developing oil leaks, particularly from the valve cover gaskets and oil pan gaskets over time.

This engine uses a timing belt that requires periodic replacement, typically around 90,000 miles. Failure to do so can result in severe engine damage.

Some owners report that the engine consumes more oil than expected, which can be due to worn piston rings or valve seals.

Radiator and water pump failures can lead to coolant leaks, which, if not addressed, can cause the engine to overheat.

Ignition coil packs can fail, leading to engine misfires. This is often accompanied by a check engine light and rough running conditions.

Over time, carbon can build up on the intake valves and combustion chambers, leading to reduced engine performance and fuel efficiency.

The 2UZ-FE engine is known for developing oil leaks, particularly from the valve cover gaskets and oil pan gaskets over time.

This engine uses a timing belt that requires periodic replacement, typically around 90,000 miles. Failure to do so can result in severe engine damage.

Some owners report that the engine consumes more oil than expected, which can be due to worn piston rings or valve seals.

Radiator and water pump failures can lead to coolant leaks, which, if not addressed, can cause the engine to overheat.

Ignition coil packs can fail, leading to engine misfires. This is often accompanied by a check engine light and rough running conditions.

Over time, carbon can build up on the intake valves and combustion chambers, leading to reduced engine performance and fuel efficiency.

The 2UZ-FE engine is known for developing oil leaks, especially around the valve cover gaskets and the oil pan, which can lead to lower oil levels and potential engine damage if not addressed.

The 2UZ-FE engine uses a timing belt that needs regular replacement. If the timing belt breaks, it can cause significant engine damage.

This engine can develop coolant leaks from the water pump or radiator, leading to overheating issues.

Over time, the oxygen sensors can fail, leading to poor fuel economy and increased emissions.

The 2UZ-FE engine can suffer from carbon build-up on the intake valves and throttle body, which can affect performance and fuel efficiency.

Ignition coil or spark plug issues can cause engine misfires, resulting in rough running and decreased performance.

Clogged or faulty fuel injectors can lead to uneven fuel distribution, causing poor engine performance and increased fuel consumption.

A faulty MAF sensor can cause incorrect air-fuel mixture readings, leading to performance issues and poor fuel economy.

This can occur in the 2UZ-FE engine due to poor maintenance or lack of regular oil changes, leading to reduced engine performance and potential damage.

The 2UZ-FE engine uses a timing belt that needs regular replacement. If it fails, it can cause severe engine damage.

Overheating issues can lead to head gasket failure, which can cause coolant leaks and engine overheating.

Worn-out or faulty spark plugs can lead to misfires and reduced engine performance.

Dirty or clogged fuel injectors can affect fuel delivery, leading to rough idling and poor acceleration.

Vacuum leaks can cause a variety of issues including rough idling, stalling, and poor fuel economy.

The knock sensor in the 2UZ-FE engine can fail, leading to poor engine performance and reduced fuel efficiency.

Cracks in the exhaust manifold can cause exhaust leaks, leading to reduced engine performance and increased emissions.

The 2UZ-FE engine can suffer from oil sludge buildup, which is often caused by infrequent oil changes or using low-quality oil. This can lead to poor lubrication and engine damage.

The engine uses a timing belt that needs regular replacement. If the timing belt breaks, it can cause significant engine damage.

Over time, fuel injectors can become clogged or fail, leading to poor engine performance and reduced fuel efficiency.

The engine may develop coolant leaks, particularly around the water pump or radiator. This can cause the engine to overheat if not addressed.

The exhaust manifold is prone to cracking, which can cause exhaust leaks and reduce engine performance.

The valve cover gaskets can deteriorate and cause oil leaks, which can lead to engine misfires and other performance issues.

Spark plugs can wear out and need regular replacement to maintain engine performance and efficiency.

The oxygen sensors can fail and cause the engine to run inefficiently, leading to higher emissions and reduced fuel economy.

The 2UZ-FE engine can suffer from oil sludge buildup, which is often caused by infrequent oil changes or using low-quality oil. This can lead to poor lubrication and engine damage.

The engine uses a timing belt that needs regular replacement. If the timing belt breaks, it can cause significant engine damage.

Over time, fuel injectors can become clogged or fail, leading to poor engine performance and reduced fuel efficiency.

The engine may develop coolant leaks, particularly around the water pump or radiator. This can cause the engine to overheat if not addressed.

The exhaust manifold is prone to cracking, which can cause exhaust leaks and reduce engine performance.

The valve cover gaskets can deteriorate and cause oil leaks, which can lead to engine misfires and other performance issues.

Spark plugs can wear out and need regular replacement to maintain engine performance and efficiency.

The oxygen sensors can fail and cause the engine to run inefficiently, leading to higher emissions and reduced fuel economy.

The 2UZ-FE engine can suffer from oil sludge buildup, which is often caused by infrequent oil changes or using low-quality oil. This can lead to poor lubrication and engine damage.

The engine uses a timing belt that needs regular replacement. If the timing belt breaks, it can cause significant engine damage.

Over time, fuel injectors can become clogged or fail, leading to poor engine performance and reduced fuel efficiency.

The engine may develop coolant leaks, particularly around the water pump or radiator. This can cause the engine to overheat if not addressed.

The exhaust manifold is prone to cracking, which can cause exhaust leaks and reduce engine performance.

The valve cover gaskets can deteriorate and cause oil leaks, which can lead to engine misfires and other performance issues.

Spark plugs can wear out and need regular replacement to maintain engine performance and efficiency.

The oxygen sensors can fail and cause the engine to run inefficiently, leading to higher emissions and reduced fuel economy.