Common in older engines, usually due to worn gaskets or seals.

The D16A6 engine uses a timing belt that requires regular replacement; failure can cause severe engine damage.

Radiators and hoses can become clogged or leak, leading to overheating problems.

The distributor in older Honda engines can fail, causing ignition issues.

Over time, the valve cover gasket can deteriorate and leak oil.

Common in high-mileage engines, often due to worn piston rings or valve seals.

Idle Air Control Valve (IACV) can become dirty or fail, causing unstable idle speeds.

Can occur due to overheating or age, leading to coolant and oil mixing.

Over time, fuel injectors can become clogged, causing poor engine performance.

Sensors such as the oxygen sensor or coolant temperature sensor can fail, affecting engine performance and fuel economy.

Common in older engines, oil leaks can occur due to worn gaskets, seals, or valve cover issues.

The D16A6 engine uses a timing belt that requires regular replacement. Failure to do so can result in severe engine damage.

The age of the vehicle can lead to head gasket failure, causing coolant leaks and engine overheating.

Over time, the valve cover gasket can deteriorate, leading to oil leaks.

The distributor in older Honda engines can fail, affecting ignition timing and causing misfires.

Problems with the idle air control valve can lead to rough idling or stalling.

Age and mileage can cause fuel injectors to clog, leading to poor engine performance.

Radiator, hoses, and thermostat issues can cause the engine to overheat.

Engine mounts can wear out over time, causing excessive engine movement and vibrations.

The exhaust manifold can develop cracks, leading to exhaust leaks and noise.

The Honda F22A1 engine uses a timing belt, which can wear out or break over time, potentially causing significant engine damage.

Common places for oil leaks in this engine include the valve cover gasket, oil pan gasket, and camshaft seals.

Overheating can cause the head gasket to fail, leading to coolant leaks and potential engine damage.

The distributor in the F22A1 engine can develop problems, including worn-out internal components or oil leaks into the distributor.

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

Issues with the idle control valve can cause erratic idling or stalling at idle.

Dirty or failing fuel injectors can cause misfires, poor fuel economy, and rough running.

Radiator or hoses can develop leaks, and the thermostat can fail, leading to overheating problems.

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.

This engine can suffer from overheating issues, commonly caused by a failing radiator, thermostat, or water pump, leading to potential head gasket problems.

Owners often report unstable idle speeds, usually due to a dirty or malfunctioning idle air control valve or vacuum leaks in the intake system.

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.

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.

The ignition system, particularly the distributor, can develop faults over time, leading to misfires, poor engine performance, and starting issues.

Common in older engines due to deteriorated gaskets and seals.

Often leads to oil leaking onto the exhaust, causing smoke and a burning oil smell.

Can cause engine misfires or complete engine failure if it breaks.

Worn spark plugs or ignition wires can cause misfires and poor engine performance.

Can lead to coolant leaking into the engine oil, causing overheating and potential engine damage.

Leads to reduced compression, increased oil consumption, and loss of power.

Clogged injectors can lead to poor fuel delivery, causing rough idling and reduced fuel efficiency.

Radiator or water pump failures can cause the engine to overheat.

Can cause exhaust leaks, leading to poor engine performance and increased emissions.

Worn distributor caps and rotors can cause ignition timing issues, affecting engine performance.

Common in older engines like the D15B6 due to worn gaskets and seals.

If not replaced at recommended intervals, it can lead to severe engine damage.

Often caused by a failing water pump, radiator issues, or a stuck thermostat.

Can be due to a clogged fuel filter, dirty injectors, or a malfunctioning oxygen sensor.

Worn piston rings or valve seals can cause the engine to burn oil.

Could be caused by a dirty idle air control valve or a malfunctioning throttle position sensor.

Worn spark plugs or a failing ignition coil can lead to misfires and poor engine performance.

Can affect the air-fuel mixture and lead to rough idling or stalling.

Older Honda engines, including the D15B2, are prone to oil leaks, often from the valve cover gasket, oil pan gasket, or camshaft seals.

The D15B2 engine uses a timing belt, which needs regular replacement. Failure to do so can result in the belt snapping, causing major engine damage.

Over time, the head gasket can fail, leading to coolant leaks, overheating, and potential engine damage.

The distributor in older Honda engines can fail, leading to issues with ignition timing and engine performance.

The intake manifold gasket and various vacuum lines can develop leaks, causing rough idling and poor fuel economy.

As the engine ages, components like the oxygen sensor, fuel injectors, and spark plugs can wear out, leading to reduced fuel efficiency.

The exhaust manifold on the D15B2 can develop cracks over time, causing exhaust leaks and increased engine noise.

Issues with the idle air control valve or throttle body can cause the engine idle to fluctuate, leading to unstable idling conditions.

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.

This engine can suffer from overheating issues, commonly caused by a failing radiator, thermostat, or water pump, leading to potential head gasket problems.

Owners often report unstable idle speeds, usually due to a dirty or malfunctioning idle air control valve or vacuum leaks in the intake system.

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.

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.

The ignition system, particularly the distributor, can develop faults over time, leading to misfires, poor engine performance, and starting issues.

Common in older engines due to deteriorated gaskets and seals.

Often leads to oil leaking onto the exhaust, causing smoke and a burning oil smell.

Can cause engine misfires or complete engine failure if it breaks.

Worn spark plugs or ignition wires can cause misfires and poor engine performance.

Can lead to coolant leaking into the engine oil, causing overheating and potential engine damage.

Leads to reduced compression, increased oil consumption, and loss of power.

Clogged injectors can lead to poor fuel delivery, causing rough idling and reduced fuel efficiency.

Radiator or water pump failures can cause the engine to overheat.

Can cause exhaust leaks, leading to poor engine performance and increased emissions.

Worn distributor caps and rotors can cause ignition timing issues, affecting engine performance.

Common in older engines, oil leaks can occur due to worn gaskets, seals, or valve cover issues.

The D16A6 engine uses a timing belt that requires regular replacement. Failure to do so can result in severe engine damage.

The age of the vehicle can lead to head gasket failure, causing coolant leaks and engine overheating.

Over time, the valve cover gasket can deteriorate, leading to oil leaks.

The distributor in older Honda engines can fail, affecting ignition timing and causing misfires.

Problems with the idle air control valve can lead to rough idling or stalling.

Age and mileage can cause fuel injectors to clog, leading to poor engine performance.

Radiator, hoses, and thermostat issues can cause the engine to overheat.

Engine mounts can wear out over time, causing excessive engine movement and vibrations.

The exhaust manifold can develop cracks, leading to exhaust leaks and noise.

Common in older engines, oil leaks can occur due to worn gaskets, seals, or valve cover issues.

The D16A6 engine uses a timing belt that requires regular replacement. Failure to do so can result in severe engine damage.

The age of the vehicle can lead to head gasket failure, causing coolant leaks and engine overheating.

Over time, the valve cover gasket can deteriorate, leading to oil leaks.

The distributor in older Honda engines can fail, affecting ignition timing and causing misfires.

Problems with the idle air control valve can lead to rough idling or stalling.

Age and mileage can cause fuel injectors to clog, leading to poor engine performance.

Radiator, hoses, and thermostat issues can cause the engine to overheat.

Engine mounts can wear out over time, causing excessive engine movement and vibrations.

The exhaust manifold can develop cracks, leading to exhaust leaks and noise.

Older Honda engines, including the D15B2, are prone to oil leaks, often from the valve cover gasket, oil pan gasket, or camshaft seals.

The D15B2 engine uses a timing belt, which needs regular replacement. Failure to do so can result in the belt snapping, causing major engine damage.

Over time, the head gasket can fail, leading to coolant leaks, overheating, and potential engine damage.

The distributor in older Honda engines can fail, leading to issues with ignition timing and engine performance.

The intake manifold gasket and various vacuum lines can develop leaks, causing rough idling and poor fuel economy.

As the engine ages, components like the oxygen sensor, fuel injectors, and spark plugs can wear out, leading to reduced fuel efficiency.

The exhaust manifold on the D15B2 can develop cracks over time, causing exhaust leaks and increased engine noise.

Issues with the idle air control valve or throttle body can cause the engine idle to fluctuate, leading to unstable idling conditions.

Common in older engines due to deteriorated gaskets and seals.

Often leads to oil leaking onto the exhaust, causing smoke and a burning oil smell.

Can cause engine misfires or complete engine failure if it breaks.

Worn spark plugs or ignition wires can cause misfires and poor engine performance.

Can lead to coolant leaking into the engine oil, causing overheating and potential engine damage.

Leads to reduced compression, increased oil consumption, and loss of power.

Clogged injectors can lead to poor fuel delivery, causing rough idling and reduced fuel efficiency.

Radiator or water pump failures can cause the engine to overheat.

Can cause exhaust leaks, leading to poor engine performance and increased emissions.

Worn distributor caps and rotors can cause ignition timing issues, affecting engine performance.