Common in older models due to worn gaskets and seals.

The timing chain can stretch or break, leading to engine performance problems.

Clogs or malfunctions in the fuel injection system can cause poor engine performance.

Old and brittle vacuum lines can cause leaks, leading to rough idling and poor fuel economy.

Radiator, water pump, or hoses may fail, causing overheating problems.

Problems with the automatic transmission, such as slipping or hard shifting, can occur.

Aging wiring and connections can lead to electrical issues, including with the ignition system.

Common in older vehicles, particularly in the undercarriage and body panels.

Oil leaks can occur due to aging gaskets and seals, often found around the valve cover, oil pan, and front and rear crankshaft seals.

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

The timing belt can wear out or break over time, potentially causing significant engine damage if not replaced according to the maintenance schedule.

The engine may overheat due to a failing thermostat, water pump, radiator issues, or coolant leaks.

Vacuum hoses and gaskets can deteriorate, leading to unmetered air entering the engine and causing rough idling, poor acceleration, and stalling.

Components such as spark plugs, ignition coils, and distributor caps can wear out, causing misfires and difficulty starting the engine.

Key sensors like the oxygen sensor, mass airflow sensor, and throttle position sensor can fail, leading to poor engine performance and increased emissions.

Corrosion and rust can cause the exhaust system to leak, resulting in increased noise and potential exhaust fumes entering the cabin.

The idle air control valve can malfunction, causing irregular idling speeds and stalling.

The EGR (Exhaust Gas Recirculation) valve can get clogged or fail, leading to increased emissions and rough engine performance.

Common in older engines due to worn seals and gaskets.

Can be caused by a failing thermostat, radiator problems, or a malfunctioning water pump.

Problems with the fuel injection system, such as clogged injectors or a faulty fuel pump.

If not replaced at recommended intervals, can lead to engine failure.

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

Can lead to rough idling and poor fuel economy.

Older fuel injection systems may suffer from faulty sensors, affecting engine performance and efficiency.

Can lead to poor engine performance and increased emissions.

The 1984 Maserati Biturbo with a V6 engine is notorious for oil leaks, particularly from the valve covers and oil pan gaskets.

The twin-turbo setup in the Biturbo can suffer from turbocharger failures or inefficiencies, leading to reduced performance and increased emissions.

Overheating is a common issue due to inadequate cooling system design or failure of components such as the radiator, water pump, or thermostat.

The electrical system, including fuel injection components, can experience failures or intermittent issues, leading to problems with engine performance or starting.

The timing belt can wear out prematurely, leading to potential engine damage if it fails, as this engine is an interference type.

Problems with the fuel injection system, such as clogged injectors or failing fuel pumps, can lead to poor engine performance and fuel economy.