Most Common Car Issues
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MOST COMMON PROBLEMS
BMW 750iL 1990
The 1990 BMW 750iL is a luxury sedan from the 7-series, featuring a powerful 4.98L V12 engine producing 295 hp. Manufactured in Dingolfing, Germany, this model includes a Dr. Supplemental Restraint System (SRS) and manual seat belts. It's a classic example of BMW's engineering prowess and elegance from that era.
Spec:
Engine Brake (hp) From
295
Engine Manufacturer
BMW-AG
Engine Model
4-Value
Engine Number of Cylinders
12
Problems:
Oil leaks
Common in older BMW engines due to aging seals and gaskets.
Cooling system failures
Radiator, water pump, and thermostat issues leading to overheating.
Timing chain wear
Can cause engine misfires or complete engine failure if not maintained.
Vacuum leaks
Can affect engine performance and fuel efficiency.
Fuel injector problems
Clogs or failures can lead to poor engine performance.
Ignition coil failures
Can lead to misfires and poor engine performance.
Valve cover gasket failure
Can cause oil leaks and affect engine performance.
Mass air flow (maf) sensor issues
Can lead to poor fuel economy and engine performance.
BMW 750iL 1988
The 1988 BMW 750iL is a luxury sedan with a powerful 5.0-liter V12 engine, producing 295 horsepower. Manufactured by BMW AG in Germany, this 7-Series model offers advanced safety features like the Dr. Supplemental System (SRS). With its classic design and robust performance, it remains a notable example of BMW's engineering excellence.
Spec:
Engine Brake (hp) From
295
Engine Manufacturer
BMW-AG
Engine Model
4-Value
Engine Number of Cylinders
12
Problems:
Oil leaks
Older BMW engines, like the one in the 1988 750iL, are known for developing oil leaks, often from the valve cover gaskets and oil pan gaskets.
Cooling system issues
The cooling system components such as the radiator, hoses, and water pump can fail, leading to overheating problems.
Vacuum leaks
The complex vacuum systems in older BMWs are prone to leaks, which can cause rough idling and poor performance.
Timing chain wear
Over time, the timing chain and its associated components can wear out, leading to potential engine damage if not addressed.
Fuel injector problems
The fuel injectors can become clogged or fail, causing issues with fuel delivery and engine performance.
Electrical issues
Older BMWs often have electrical gremlins, including problems with the engine control unit (ECU) and various sensors.
Head gasket failure
High mileage engines may experience head gasket failure, leading to coolant mixing with oil and potential engine damage.
Throttle body problems
The throttle body can become dirty or malfunction, leading to issues with engine idle and acceleration.
Ignition system failures
Components such as the distributor cap, rotor, and ignition coils can fail, causing misfires and poor engine performance.
Exhaust system corrosion
The exhaust system, including the catalytic converter and mufflers, can corrode over time, leading to leaks and increased emissions.