The 2.3L GTDI engine is turbocharged, and turbocharger units can fail prematurely due to oil supply issues or excessive wear.

Over time, timing belts or chains can wear out, leading to potential engine damage if not replaced according to the maintenance schedule.

Direct injection engines, like the 2.3L GTDI, can suffer from carbon build-up on the intake valves, leading to reduced performance and efficiency.

There have been reports of coolant leaks in some Ford engines, which can lead to overheating and engine damage if not addressed promptly.

The ignition coils in the 2.3L GTDI can fail, causing misfires and poor engine performance.

Faulty fuel injectors can lead to poor fuel economy, rough idling, and engine performance issues.

The DBS system in the Porsche 911 may fail to activate properly, leading to reduced braking assistance during emergencies.

The 6-cylinder engine may experience misfires due to issues with spark plugs, ignition coils, or fuel injectors, leading to rough idling and reduced performance.

The engine may develop oil leaks from the valve cover gaskets or oil pan, leading to low oil levels and potential engine damage if not addressed.

The engine cooling system may fail due to faulty radiators, water pumps, or thermostats, causing the engine to overheat and potentially leading to severe engine damage.

For turbocharged models, the turbocharger may develop problems such as bearing failure or boost leaks, resulting in reduced power and efficiency.

The timing chain tensioner may fail, leading to improper timing and potential engine damage.

Direct injection engines may suffer from carbon buildup on intake valves, leading to reduced performance and fuel efficiency.

Various engine sensors, such as the oxygen sensor or mass airflow sensor, may fail, resulting in poor engine performance and increased emissions.

Issues with the exhaust system, such as a failing catalytic converter or exhaust leaks, can lead to poor performance and increased emissions.

Engine misfires can occur due to faulty spark plugs, ignition coils, or fuel injectors, which can affect the 4-cylinder engine's performance.

The Porsche 718 Boxster's turbocharged engine may experience turbo lag, boost pressure problems, or turbo failure, impacting overall power and efficiency.

Common in many high-performance engines, oil leaks can stem from valve cover gaskets, oil pan gaskets, or other seals deteriorating over time.

Issues such as a faulty water pump, thermostat failure, or radiator leaks can lead to overheating in the engine.

Problems with the fuel pump, fuel filter, or injectors can cause poor fuel delivery, resulting in reduced engine performance or stalling.

Direct injection engines, like the one in the 718 Boxster, are prone to carbon buildup on intake valves, which can decrease performance and fuel efficiency.

Faulty timing chain tensioners can lead to improper timing, potentially causing severe engine damage if not addressed.

Sensors such as the oxygen sensor, mass airflow sensor, or crankshaft position sensor can fail, leading to inaccurate data being sent to the engine control unit (ECU) and causing various performance issues.

The DBS system in the Porsche 911 may fail to activate properly, leading to reduced braking assistance during emergencies.

The 6-cylinder engine may experience misfires due to issues with spark plugs, ignition coils, or fuel injectors, leading to rough idling and reduced performance.

The engine may develop oil leaks from the valve cover gaskets or oil pan, leading to low oil levels and potential engine damage if not addressed.

The engine cooling system may fail due to faulty radiators, water pumps, or thermostats, causing the engine to overheat and potentially leading to severe engine damage.

For turbocharged models, the turbocharger may develop problems such as bearing failure or boost leaks, resulting in reduced power and efficiency.

The timing chain tensioner may fail, leading to improper timing and potential engine damage.

Direct injection engines may suffer from carbon buildup on intake valves, leading to reduced performance and fuel efficiency.

Various engine sensors, such as the oxygen sensor or mass airflow sensor, may fail, resulting in poor engine performance and increased emissions.

Issues with the exhaust system, such as a failing catalytic converter or exhaust leaks, can lead to poor performance and increased emissions.

The DBS system may fail to activate or provide inadequate braking assistance during emergency stops, potentially due to sensor issues or software glitches.

The 2.3L GTDI engine's turbocharger can suffer from problems such as oil leaks, bearing failures, or reduced performance, leading to a loss of power.

Direct-injection engines like the Ford 2.3L GTDI are prone to carbon buildup on intake valves, which can cause rough idling, misfires, and reduced fuel efficiency.

The cooling system components, such as the water pump or hoses, can develop leaks over time, leading to engine overheating.

The timing chain in the 2.3L GTDI engine may stretch or wear prematurely, causing timing issues and potentially leading to engine damage if not addressed.

Fuel injectors can become clogged or fail, resulting in poor engine performance, misfires, and decreased fuel economy.

The engine may consume oil at a higher rate, which could be due to issues like worn piston rings or valve seals, requiring frequent oil top-ups.

Although not directly related to the engine, the 2017 Ford Focus is known to have transmission problems, particularly with the dual-clutch transmission (DCT), which can affect overall drivability.

Engine mounts can wear out over time, leading to increased engine vibrations and noise, impacting the comfort and performance of the vehicle.

Components of the exhaust system, such as the catalytic converter or exhaust manifold, can fail or develop leaks, affecting emissions and engine performance.

Common in Porsche 911s, oil leaks can occur from the rear main seal or the IMS bearing, leading to decreased engine performance.

The engine may experience coolant leaks from the water pump or hoses, which can result in overheating issues.

Intermediate Shaft (IMS) bearing failure is a known problem in some Porsche engines, which can lead to catastrophic engine damage if not addressed.

The 6-cylinder engine in the 911 can suffer from cylinder scoring, which affects performance and longevity.

This can lead to improper timing and potentially severe engine damage if the chain slips or breaks.

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

Clogged or failing fuel injectors can lead to poor engine performance and fuel efficiency.

Turbocharged models may experience turbo failure or boost leaks, affecting engine power and performance.

Leaks in the vacuum system can cause rough idling, stalling, and reduced engine efficiency.

These components may wear out or fail, leading to misfires and rough running conditions.

The 2.3L GTDI engine is turbocharged, and turbocharger units can fail prematurely due to oil supply issues or excessive wear.

Over time, timing belts or chains can wear out, leading to potential engine damage if not replaced according to the maintenance schedule.

Direct injection engines, like the 2.3L GTDI, can suffer from carbon build-up on the intake valves, leading to reduced performance and efficiency.

There have been reports of coolant leaks in some Ford engines, which can lead to overheating and engine damage if not addressed promptly.

The ignition coils in the 2.3L GTDI can fail, causing misfires and poor engine performance.

Faulty fuel injectors can lead to poor fuel economy, rough idling, and engine performance issues.

The DBS system in the Porsche 911 may fail to activate properly, leading to reduced braking assistance during emergencies.

The 6-cylinder engine may experience misfires due to issues with spark plugs, ignition coils, or fuel injectors, leading to rough idling and reduced performance.

The engine may develop oil leaks from the valve cover gaskets or oil pan, leading to low oil levels and potential engine damage if not addressed.

The engine cooling system may fail due to faulty radiators, water pumps, or thermostats, causing the engine to overheat and potentially leading to severe engine damage.

For turbocharged models, the turbocharger may develop problems such as bearing failure or boost leaks, resulting in reduced power and efficiency.

The timing chain tensioner may fail, leading to improper timing and potential engine damage.

Direct injection engines may suffer from carbon buildup on intake valves, leading to reduced performance and fuel efficiency.

Various engine sensors, such as the oxygen sensor or mass airflow sensor, may fail, resulting in poor engine performance and increased emissions.

Issues with the exhaust system, such as a failing catalytic converter or exhaust leaks, can lead to poor performance and increased emissions.

The DBS system may fail to activate or provide inadequate braking assistance during emergency stops, potentially due to sensor issues or software glitches.

The 2.3L GTDI engine's turbocharger can suffer from problems such as oil leaks, bearing failures, or reduced performance, leading to a loss of power.

Direct-injection engines like the Ford 2.3L GTDI are prone to carbon buildup on intake valves, which can cause rough idling, misfires, and reduced fuel efficiency.

The cooling system components, such as the water pump or hoses, can develop leaks over time, leading to engine overheating.

The timing chain in the 2.3L GTDI engine may stretch or wear prematurely, causing timing issues and potentially leading to engine damage if not addressed.

Fuel injectors can become clogged or fail, resulting in poor engine performance, misfires, and decreased fuel economy.

The engine may consume oil at a higher rate, which could be due to issues like worn piston rings or valve seals, requiring frequent oil top-ups.

Although not directly related to the engine, the 2017 Ford Focus is known to have transmission problems, particularly with the dual-clutch transmission (DCT), which can affect overall drivability.

Engine mounts can wear out over time, leading to increased engine vibrations and noise, impacting the comfort and performance of the vehicle.

Components of the exhaust system, such as the catalytic converter or exhaust manifold, can fail or develop leaks, affecting emissions and engine performance.

Engine misfires can occur due to faulty spark plugs, ignition coils, or fuel injectors, which can affect the 4-cylinder engine's performance.

The Porsche 718 Boxster's turbocharged engine may experience turbo lag, boost pressure problems, or turbo failure, impacting overall power and efficiency.

Common in many high-performance engines, oil leaks can stem from valve cover gaskets, oil pan gaskets, or other seals deteriorating over time.

Issues such as a faulty water pump, thermostat failure, or radiator leaks can lead to overheating in the engine.

Problems with the fuel pump, fuel filter, or injectors can cause poor fuel delivery, resulting in reduced engine performance or stalling.

Direct injection engines, like the one in the 718 Boxster, are prone to carbon buildup on intake valves, which can decrease performance and fuel efficiency.

Faulty timing chain tensioners can lead to improper timing, potentially causing severe engine damage if not addressed.

Sensors such as the oxygen sensor, mass airflow sensor, or crankshaft position sensor can fail, leading to inaccurate data being sent to the engine control unit (ECU) and causing various performance issues.

The DBS system may fail to activate or provide inadequate braking assistance during emergency stops, potentially due to sensor issues or software glitches.

The 2.3L GTDI engine's turbocharger can suffer from problems such as oil leaks, bearing failures, or reduced performance, leading to a loss of power.

Direct-injection engines like the Ford 2.3L GTDI are prone to carbon buildup on intake valves, which can cause rough idling, misfires, and reduced fuel efficiency.

The cooling system components, such as the water pump or hoses, can develop leaks over time, leading to engine overheating.

The timing chain in the 2.3L GTDI engine may stretch or wear prematurely, causing timing issues and potentially leading to engine damage if not addressed.

Fuel injectors can become clogged or fail, resulting in poor engine performance, misfires, and decreased fuel economy.

The engine may consume oil at a higher rate, which could be due to issues like worn piston rings or valve seals, requiring frequent oil top-ups.

Although not directly related to the engine, the 2017 Ford Focus is known to have transmission problems, particularly with the dual-clutch transmission (DCT), which can affect overall drivability.

Engine mounts can wear out over time, leading to increased engine vibrations and noise, impacting the comfort and performance of the vehicle.

Components of the exhaust system, such as the catalytic converter or exhaust manifold, can fail or develop leaks, affecting emissions and engine performance.

High-performance engines like those in a Porsche 718 Cayman can develop oil leaks, especially around the valve covers and oil pan, due to the high pressures and temperatures.

The cooling system in high-performance engines can sometimes struggle to keep up, leading to overheating issues, especially if the coolant is not regularly checked and replaced.

With a 4-cylinder engine, if one coil fails, it can cause misfires, rough idling, and poor performance.

Over time, fuel injectors can become clogged or fail, leading to issues with fuel delivery, reduced performance, and increased emissions.

If the vehicle is equipped with a turbocharger, it can suffer from issues like boost leaks, bearing wear, or wastegate problems, leading to reduced power and efficiency.

High-performance engines can experience accelerated timing chain wear, which can lead to timing issues, engine misfires, and potential engine damage if not addressed.

Direct injection engines can suffer from carbon buildup on intake valves, leading to reduced performance, rough idling, and potential engine damage.

The DBS system may fail to activate or provide inadequate braking assistance during emergency stops, potentially due to sensor issues or software glitches.

The 2.3L GTDI engine's turbocharger can suffer from problems such as oil leaks, bearing failures, or reduced performance, leading to a loss of power.

Direct-injection engines like the Ford 2.3L GTDI are prone to carbon buildup on intake valves, which can cause rough idling, misfires, and reduced fuel efficiency.

The cooling system components, such as the water pump or hoses, can develop leaks over time, leading to engine overheating.

The timing chain in the 2.3L GTDI engine may stretch or wear prematurely, causing timing issues and potentially leading to engine damage if not addressed.

Fuel injectors can become clogged or fail, resulting in poor engine performance, misfires, and decreased fuel economy.

The engine may consume oil at a higher rate, which could be due to issues like worn piston rings or valve seals, requiring frequent oil top-ups.

Although not directly related to the engine, the 2017 Ford Focus is known to have transmission problems, particularly with the dual-clutch transmission (DCT), which can affect overall drivability.

Engine mounts can wear out over time, leading to increased engine vibrations and noise, impacting the comfort and performance of the vehicle.

Components of the exhaust system, such as the catalytic converter or exhaust manifold, can fail or develop leaks, affecting emissions and engine performance.

Engine misfires can occur due to faulty spark plugs, ignition coils, or fuel injectors, which can affect the 4-cylinder engine's performance.

The Porsche 718 Boxster's turbocharged engine may experience turbo lag, boost pressure problems, or turbo failure, impacting overall power and efficiency.

Common in many high-performance engines, oil leaks can stem from valve cover gaskets, oil pan gaskets, or other seals deteriorating over time.

Issues such as a faulty water pump, thermostat failure, or radiator leaks can lead to overheating in the engine.

Problems with the fuel pump, fuel filter, or injectors can cause poor fuel delivery, resulting in reduced engine performance or stalling.

Direct injection engines, like the one in the 718 Boxster, are prone to carbon buildup on intake valves, which can decrease performance and fuel efficiency.

Faulty timing chain tensioners can lead to improper timing, potentially causing severe engine damage if not addressed.

Sensors such as the oxygen sensor, mass airflow sensor, or crankshaft position sensor can fail, leading to inaccurate data being sent to the engine control unit (ECU) and causing various performance issues.

Hydraulic brake systems often suffer from worn brake pads due to regular use, reducing braking efficiency.

Leaks in the hydraulic lines or master cylinder can cause a loss of braking power and potential brake failure.

The V-shaped Navistar engine in the Ford F-450 can experience overheating issues, especially under heavy loads or in hot climates.

Engine performance and fuel efficiency may be affected by clogged or malfunctioning fuel injectors in the Navistar engine.

The V-shaped configuration of the engine may lead to timing chain wear, causing poor engine performance or even engine failure.

The 8-cylinder Navistar engine can develop exhaust manifold leaks, leading to noisy operation and potential exhaust fume exposure.

Given the high horsepower (350 hp) output, transmission problems like slipping or hard shifting can occur, especially if the transmission is not properly maintained.

The 2010 Ford F-450 can experience electrical issues, such as faulty sensors or wiring problems, affecting the engine’s performance.

If equipped with a turbocharger, the Navistar engine may face turbocharger issues, leading to reduced power and efficiency.

Common in Navistar engines, ICM failures can cause hard starting, misfiring, and poor engine performance.

The DBS system may fail to activate or provide inadequate braking assistance during emergency stops, potentially due to sensor issues or software glitches.

The 2.3L GTDI engine's turbocharger can suffer from problems such as oil leaks, bearing failures, or reduced performance, leading to a loss of power.

Direct-injection engines like the Ford 2.3L GTDI are prone to carbon buildup on intake valves, which can cause rough idling, misfires, and reduced fuel efficiency.

The cooling system components, such as the water pump or hoses, can develop leaks over time, leading to engine overheating.

The timing chain in the 2.3L GTDI engine may stretch or wear prematurely, causing timing issues and potentially leading to engine damage if not addressed.

Fuel injectors can become clogged or fail, resulting in poor engine performance, misfires, and decreased fuel economy.

The engine may consume oil at a higher rate, which could be due to issues like worn piston rings or valve seals, requiring frequent oil top-ups.

Although not directly related to the engine, the 2017 Ford Focus is known to have transmission problems, particularly with the dual-clutch transmission (DCT), which can affect overall drivability.

Engine mounts can wear out over time, leading to increased engine vibrations and noise, impacting the comfort and performance of the vehicle.

Components of the exhaust system, such as the catalytic converter or exhaust manifold, can fail or develop leaks, affecting emissions and engine performance.

The 2.3L GTDI engine is turbocharged, and turbocharger units can fail prematurely due to oil supply issues or excessive wear.

Over time, timing belts or chains can wear out, leading to potential engine damage if not replaced according to the maintenance schedule.

Direct injection engines, like the 2.3L GTDI, can suffer from carbon build-up on the intake valves, leading to reduced performance and efficiency.

There have been reports of coolant leaks in some Ford engines, which can lead to overheating and engine damage if not addressed promptly.

The ignition coils in the 2.3L GTDI can fail, causing misfires and poor engine performance.

Faulty fuel injectors can lead to poor fuel economy, rough idling, and engine performance issues.

The Porsche 911, especially older models, is known for oil leaks due to worn gaskets or seals.

Intermediate Shaft (IMS) bearing issues can lead to engine failure if not addressed.

Coolant leaks can occur due to faulty water pumps or radiators, leading to overheating.

Oxygen sensors and other engine sensors can fail, affecting engine performance and fuel efficiency.

Engine misfires can be caused by faulty spark plugs, ignition coils, or fuel injectors.

Problems with the timing chain can lead to poor engine performance and potential engine damage.

Engine misfires can occur due to faulty spark plugs, ignition coils, or fuel injectors, which can affect the 4-cylinder engine's performance.

The Porsche 718 Boxster's turbocharged engine may experience turbo lag, boost pressure problems, or turbo failure, impacting overall power and efficiency.

Common in many high-performance engines, oil leaks can stem from valve cover gaskets, oil pan gaskets, or other seals deteriorating over time.

Issues such as a faulty water pump, thermostat failure, or radiator leaks can lead to overheating in the engine.

Problems with the fuel pump, fuel filter, or injectors can cause poor fuel delivery, resulting in reduced engine performance or stalling.

Direct injection engines, like the one in the 718 Boxster, are prone to carbon buildup on intake valves, which can decrease performance and fuel efficiency.

Faulty timing chain tensioners can lead to improper timing, potentially causing severe engine damage if not addressed.

Sensors such as the oxygen sensor, mass airflow sensor, or crankshaft position sensor can fail, leading to inaccurate data being sent to the engine control unit (ECU) and causing various performance issues.

The DBS system may fail to activate or provide inadequate braking assistance during emergency stops, potentially due to sensor issues or software glitches.

The 2.3L GTDI engine's turbocharger can suffer from problems such as oil leaks, bearing failures, or reduced performance, leading to a loss of power.

Direct-injection engines like the Ford 2.3L GTDI are prone to carbon buildup on intake valves, which can cause rough idling, misfires, and reduced fuel efficiency.

The cooling system components, such as the water pump or hoses, can develop leaks over time, leading to engine overheating.

The timing chain in the 2.3L GTDI engine may stretch or wear prematurely, causing timing issues and potentially leading to engine damage if not addressed.

Fuel injectors can become clogged or fail, resulting in poor engine performance, misfires, and decreased fuel economy.

The engine may consume oil at a higher rate, which could be due to issues like worn piston rings or valve seals, requiring frequent oil top-ups.

Although not directly related to the engine, the 2017 Ford Focus is known to have transmission problems, particularly with the dual-clutch transmission (DCT), which can affect overall drivability.

Engine mounts can wear out over time, leading to increased engine vibrations and noise, impacting the comfort and performance of the vehicle.

Components of the exhaust system, such as the catalytic converter or exhaust manifold, can fail or develop leaks, affecting emissions and engine performance.

The DBS system may fail to activate or provide inadequate braking assistance during emergency stops, potentially due to sensor issues or software glitches.

The 2.3L GTDI engine's turbocharger can suffer from problems such as oil leaks, bearing failures, or reduced performance, leading to a loss of power.

Direct-injection engines like the Ford 2.3L GTDI are prone to carbon buildup on intake valves, which can cause rough idling, misfires, and reduced fuel efficiency.

The cooling system components, such as the water pump or hoses, can develop leaks over time, leading to engine overheating.

The timing chain in the 2.3L GTDI engine may stretch or wear prematurely, causing timing issues and potentially leading to engine damage if not addressed.

Fuel injectors can become clogged or fail, resulting in poor engine performance, misfires, and decreased fuel economy.

The engine may consume oil at a higher rate, which could be due to issues like worn piston rings or valve seals, requiring frequent oil top-ups.

Although not directly related to the engine, the 2017 Ford Focus is known to have transmission problems, particularly with the dual-clutch transmission (DCT), which can affect overall drivability.

Engine mounts can wear out over time, leading to increased engine vibrations and noise, impacting the comfort and performance of the vehicle.

Components of the exhaust system, such as the catalytic converter or exhaust manifold, can fail or develop leaks, affecting emissions and engine performance.

The DBS system in the Porsche 911 may fail to activate properly, leading to reduced braking assistance during emergencies.

The 6-cylinder engine may experience misfires due to issues with spark plugs, ignition coils, or fuel injectors, leading to rough idling and reduced performance.

The engine may develop oil leaks from the valve cover gaskets or oil pan, leading to low oil levels and potential engine damage if not addressed.

The engine cooling system may fail due to faulty radiators, water pumps, or thermostats, causing the engine to overheat and potentially leading to severe engine damage.

For turbocharged models, the turbocharger may develop problems such as bearing failure or boost leaks, resulting in reduced power and efficiency.

The timing chain tensioner may fail, leading to improper timing and potential engine damage.

Direct injection engines may suffer from carbon buildup on intake valves, leading to reduced performance and fuel efficiency.

Various engine sensors, such as the oxygen sensor or mass airflow sensor, may fail, resulting in poor engine performance and increased emissions.

Issues with the exhaust system, such as a failing catalytic converter or exhaust leaks, can lead to poor performance and increased emissions.

The DBS system may fail to activate or provide inadequate braking assistance during emergency stops, potentially due to sensor issues or software glitches.

The 2.3L GTDI engine's turbocharger can suffer from problems such as oil leaks, bearing failures, or reduced performance, leading to a loss of power.

Direct-injection engines like the Ford 2.3L GTDI are prone to carbon buildup on intake valves, which can cause rough idling, misfires, and reduced fuel efficiency.

The cooling system components, such as the water pump or hoses, can develop leaks over time, leading to engine overheating.

The timing chain in the 2.3L GTDI engine may stretch or wear prematurely, causing timing issues and potentially leading to engine damage if not addressed.

Fuel injectors can become clogged or fail, resulting in poor engine performance, misfires, and decreased fuel economy.

The engine may consume oil at a higher rate, which could be due to issues like worn piston rings or valve seals, requiring frequent oil top-ups.

Although not directly related to the engine, the 2017 Ford Focus is known to have transmission problems, particularly with the dual-clutch transmission (DCT), which can affect overall drivability.

Engine mounts can wear out over time, leading to increased engine vibrations and noise, impacting the comfort and performance of the vehicle.

Components of the exhaust system, such as the catalytic converter or exhaust manifold, can fail or develop leaks, affecting emissions and engine performance.

The DBS system may fail to activate or provide inadequate braking assistance during emergency stops, potentially due to sensor issues or software glitches.

The 2.3L GTDI engine's turbocharger can suffer from problems such as oil leaks, bearing failures, or reduced performance, leading to a loss of power.

Direct-injection engines like the Ford 2.3L GTDI are prone to carbon buildup on intake valves, which can cause rough idling, misfires, and reduced fuel efficiency.

The cooling system components, such as the water pump or hoses, can develop leaks over time, leading to engine overheating.

The timing chain in the 2.3L GTDI engine may stretch or wear prematurely, causing timing issues and potentially leading to engine damage if not addressed.

Fuel injectors can become clogged or fail, resulting in poor engine performance, misfires, and decreased fuel economy.

The engine may consume oil at a higher rate, which could be due to issues like worn piston rings or valve seals, requiring frequent oil top-ups.

Although not directly related to the engine, the 2017 Ford Focus is known to have transmission problems, particularly with the dual-clutch transmission (DCT), which can affect overall drivability.

Engine mounts can wear out over time, leading to increased engine vibrations and noise, impacting the comfort and performance of the vehicle.

Components of the exhaust system, such as the catalytic converter or exhaust manifold, can fail or develop leaks, affecting emissions and engine performance.

The 2.3L GTDI engine is turbocharged, and turbocharger units can fail prematurely due to oil supply issues or excessive wear.

Over time, timing belts or chains can wear out, leading to potential engine damage if not replaced according to the maintenance schedule.

Direct injection engines, like the 2.3L GTDI, can suffer from carbon build-up on the intake valves, leading to reduced performance and efficiency.

There have been reports of coolant leaks in some Ford engines, which can lead to overheating and engine damage if not addressed promptly.

The ignition coils in the 2.3L GTDI can fail, causing misfires and poor engine performance.

Faulty fuel injectors can lead to poor fuel economy, rough idling, and engine performance issues.