Most Common Car Issues

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Engine Brake (hp) From

Engine Brake (hp) To

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Model

Model Year

MOST COMMON PROBLEMS

MAZDA RX-7 1990

The 1990 Mazda RX-7 is a sleek coupe powered by a 1.3L rotary engine producing between 200-220 horsepower. With its iconic 13BT turbocharged engine, this two-door sports car offers exhilarating performance. Built in Hiroshima, Japan, the RX-7 combines Mazda's engineering prowess with a lightweight design, making it a beloved classic among enthusiasts.

Spec:

Engine Brake (hp) From

200

Engine Brake (hp) To

220

Engine Configuration

Rotary

Engine Model

13BT

Engine Number of Cylinders

Problems:

Apex seal failure

Apex seals in rotary engines are prone to wear and failure, leading to loss of compression and power.

Overheating

Rotary engines can run hot due to their design, leading to potential overheating issues.

Oil consumption

Rotary engines often consume more oil than piston engines, requiring frequent oil checks and top-ups.

Carbon buildup

Carbon can build up in the combustion chambers, affecting performance and efficiency.

Vacuum leaks

The engine's vacuum system may develop leaks, leading to rough idling and performance issues.

Ignition problems

Rotary engines can experience issues with ignition timing and spark plug wear, affecting engine performance.

Coolant leaks

Coolant seals in rotary engines can fail, leading to leaks and overheating problems.

Rotor housing wear

The rotor housings can wear over time, leading to reduced compression and the need for a rebuild.

MAZDA RX-7 1990

The 1990 Mazda RX-7 is a sleek coupe powered by a 1.3L rotary engine, producing between 160 to 176 horsepower. Manufactured in Hiroshima, Japan, this two-door sports car is known for its lightweight design and exhilarating performance. With its classic styling and impressive engineering, the RX-7 remains a beloved model among car enthusiasts.

Spec:

Engine Brake (hp) From

160

Engine Brake (hp) To

176

Engine Configuration

Rotary

Engine Model

13BE

Problems:

Apex seal wear

Due to the unique design of the rotary engine, the apex seals can wear out faster than traditional piston engine components, leading to compression loss and reduced performance.

Oil consumption

Rotary engines, such as the Mazda 13BE in the RX-7, are known for higher oil consumption, which requires vigilant monitoring and frequent top-offs.

Cooling system issues

The rotary engine generates more heat compared to piston engines, making the cooling system critical. Problems with the cooling system can lead to overheating and engine damage.

Flooding

The RX-7's rotary engine is prone to flooding, especially if it is started and stopped without reaching operating temperature. This can make the engine hard to start.

Carbon build-up

The design of the rotary engine can lead to carbon build-up on the rotor faces and combustion chambers, which affects engine efficiency and performance.

Vacuum leaks

The RX-7’s rotary engine relies heavily on vacuum systems. Leaks can cause idling issues, poor performance, and even stalling.

Fuel injector problems

Due to the high-revving nature of the rotary engine, fuel injectors can become clogged or fail, leading to poor fuel delivery and engine performance issues.

Ignition system failures

The rotary engine uses a dual-spark plug system for each rotor, and issues with the ignition system can lead to misfires and reduced engine efficiency.