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Most Common Car Issues

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Engine Model
B21A1

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MOST COMMON PROBLEMS

HONDA Prelude 1991

The 1991 Honda Prelude Si is a sleek 2-door sedan powered by the B21A1 engine producing 140 hp. Manufactured by Honda Motor Co., Ltd. in Sayama, Japan, this model features an automatic seat belt system and a unique 4-wheel steering system. Ideal for those seeking a classic, agile passenger car under 6,000 lbs.

Spec:

Engine Brake (hp) From
140
Engine Model
B21A1

Problems:

Oil leaks
The Honda Prelude B21A1 engine is known for developing oil leaks, particularly from the valve cover gasket and oil pan gasket.
Overheating
Issues with the cooling system, such as a failing radiator or water pump, can cause the engine to overheat.
Timing belt failure
The timing belt needs regular replacement; if it fails, it can cause severe engine damage.
Distributor problems
The distributor cap and rotor can wear out, leading to misfires and poor engine performance.
Valve seal wear
The valve seals can wear out, leading to increased oil consumption and blue smoke from the exhaust.
Fuel injector problems
Clogged or malfunctioning fuel injectors can cause poor fuel economy and engine misfires.
HONDA Prelude 1990

The 1990 Honda Prelude LX is a sporty 2-door sedan powered by the B21A1 engine. Manufactured in Sayama, Japan, it features an automatic seat belt system and optional Anti-Lock Braking System (ALB). This lightweight passenger car is ideal for enthusiasts seeking a blend of performance and reliability.

Spec:

Engine Model
B21A1

Problems:

Oil leaks
The B21A1 engine in the 1990 Honda Prelude is known for developing oil leaks, often around the valve cover gasket and oil pan gasket, due to aging seals and gaskets.
Overheating
This engine can suffer from overheating issues, commonly caused by a failing radiator, thermostat, or water pump, leading to potential head gasket problems.
Idle fluctuations
Owners often report unstable idle speeds, usually due to a dirty or malfunctioning idle air control valve or vacuum leaks in the intake system.
Timing belt failure
The timing belt on the B21A1 engine needs regular replacement; failure to do so can result in severe engine damage due to valve and piston interference.
Excessive oil consumption
Worn piston rings and valve seals can lead to excessive oil consumption, necessitating frequent oil top-ups and potentially leading to engine damage if not addressed.
Distributor issues
The ignition system, particularly the distributor, can develop faults over time, leading to misfires, poor engine performance, and starting issues.
HONDA Prelude 1990

The 1990 Honda Prelude DX, manufactured by Honda Motor Co., Ltd. in Sayama, Japan, is a sleek 2-door sedan equipped with the B21A1 engine and an innovative 4 Wheel Steering System. With a gross vehicle weight rating of 6,000 lb or less, this model offers automatic seat belts for added safety.

Spec:

Engine Model
B21A1

Problems:

Oil leaks
The B21A1 engine in the 1990 Honda Prelude is known for developing oil leaks, often around the valve cover gasket and oil pan gasket, due to aging seals and gaskets.
Overheating
This engine can suffer from overheating issues, commonly caused by a failing radiator, thermostat, or water pump, leading to potential head gasket problems.
Idle fluctuations
Owners often report unstable idle speeds, usually due to a dirty or malfunctioning idle air control valve or vacuum leaks in the intake system.
Timing belt failure
The timing belt on the B21A1 engine needs regular replacement; failure to do so can result in severe engine damage due to valve and piston interference.
Excessive oil consumption
Worn piston rings and valve seals can lead to excessive oil consumption, necessitating frequent oil top-ups and potentially leading to engine damage if not addressed.
Distributor issues
The ignition system, particularly the distributor, can develop faults over time, leading to misfires, poor engine performance, and starting issues.
HONDA Prelude 1991

The 1991 Honda Prelude Si is a sleek 2-door sedan powered by a B21A1 engine delivering 140 hp. Manufactured in Sayama, Japan, this model comes equipped with automatic seat belts and an anti-lock braking system (ALB). With a gross vehicle weight rating of 6,000 lb or less, it offers a blend of performance and safety.

Spec:

Engine Brake (hp) From
140
Engine Model
B21A1

Problems:

Oil leaks
The Honda Prelude B21A1 engine is known for developing oil leaks, particularly from the valve cover gasket and oil pan gasket.
Overheating
Issues with the cooling system, such as a failing radiator or water pump, can cause the engine to overheat.
Timing belt failure
The timing belt needs regular replacement; if it fails, it can cause severe engine damage.
Distributor problems
The distributor cap and rotor can wear out, leading to misfires and poor engine performance.
Valve seal wear
The valve seals can wear out, leading to increased oil consumption and blue smoke from the exhaust.
Fuel injector problems
Clogged or malfunctioning fuel injectors can cause poor fuel economy and engine misfires.
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