Common in older vehicles; can occur around valve covers, oil pan, or other engine seals.

Potential issues with cooling system components like the radiator, water pump, or thermostat.

EFI systems can develop issues with clogged or leaking fuel injectors.

Issues with spark plugs, ignition coils, or distributor can cause misfires.

Can lead to rough idling, poor fuel economy, and engine performance issues.

Can cause engine timing issues, leading to poor performance or engine damage if not addressed.

Aging sensors, such as oxygen sensors or MAF (Mass Air Flow) sensors, can cause incorrect air-fuel mixture.

Exhaust Gas Recirculation valve can get clogged, leading to performance and emissions problems.

Can lead to coolant leaks, overheating, and engine damage if not repaired.

While not part of the engine, transmission issues can affect overall vehicle performance.

Older engines, especially those from the early '90s, are prone to develop oil leaks due to worn gaskets and seals.

Over time, the cooling system components like the radiator, hoses, and water pump may develop leaks or failures, causing the engine to overheat.

V6 engines can sometimes be prone to head gasket issues, leading to coolant leaks and potential engine overheating.

Electronic Fuel Injection (EFI) systems, especially in older models, can suffer from clogged injectors or failing sensors, leading to poor engine performance.

High-mileage engines can experience timing chain wear, which can lead to poor engine performance or even catastrophic engine failure if the chain breaks.

Components such as spark plugs, ignition coils, and distributors can wear out over time, causing misfires and reduced engine performance.

While not directly an engine problem, the transmission in older vehicles can affect engine performance and drivability, especially if it doesn't shift properly.

Vacuum hoses and gaskets can become brittle and crack over time, leading to rough idling and poor acceleration.

Older EFI systems can suffer from failing sensors, such as the oxygen sensor or mass airflow sensor, leading to incorrect fuel-air mixture and reduced engine efficiency.

Rust and corrosion can affect the exhaust system, including the catalytic converter and muffler, leading to increased emissions and noise.

Common in V-shaped engines due to gasket deterioration, especially in older models.

Potential issues with radiator or water pump, causing overheating.

V6 engines often experience coil pack issues, leading to misfires.

Wear and tear can cause timing chain stretch or failure, leading to engine damage.

Common in Ford V6 engines, causing coolant leaks and engine overheating.

Issues with crankshaft or camshaft position sensors can lead to poor engine performance.

Clogged or malfunctioning injectors can cause rough idling and poor acceleration.