The typical answer is four injectors—one for each cylinder—on Prelude models with fuel-injected engines. The very first generation (1978–1982) used a carburetor and had no fuel injectors at all.
Scope and quick context
To understand injector counts on a Honda Prelude, it helps to know the generation and engine type. Most Preludes built from the 1980s onward used some form of fuel injection, and the standard configuration across those generations is four injectors. The earliest Prelude, however, relied on a carburetor rather than fuel injectors.
The following breakdown covers the main generations and what you’d typically find in terms of fuel injectors.
- First generation (1978–1982): carbureted engine, no fuel injectors.
- Second generation (1983–1987): introduction of fuel-injected engines; later models commonly used multi-point fuel injection with four injectors.
- Third generation (1988–1991): fuel-injected with four injectors (one per cylinder).
- Fourth generation (1992–1996): fuel-injected with four injectors (port/multi-point fuel injection).
- Fifth generation (1997–2001): fuel-injected with four injectors (engine options include H-series variants such as H22A/H23A, all with four injectors).
Conclusion: if your Prelude is a model from 1983 or later and uses a fuel-injected engine, you’ll generally have four injectors. The only exception is the very early first-generation cars, which used a carburetor and had no fuel injectors.
How to verify injector count on your specific Prelude
If you want to confirm the injector count on a particular vehicle, use these practical steps to verify for your exact model year and engine code.
Engine codes and physical inspection
Engine codes and the physical fuel rail are your best quick indicators. Look up the engine code on the engine block or in the car’s documentation to confirm the fuel system configuration. A glance at the intake manifold area will reveal the number of injectors installed in the fuel rail.
- Check the engine code badge or VIN/chassis documentation to identify the exact engine family (e.g., B-series or H-series variants).
- Inspect the area around the intake manifold where the fuel rail sits; you should see four injectors if it’s a typical four-cylinder fuel-injected configuration.
- Consult the factory service manual or a trusted repair guide for your specific year and model to confirm the injector count and fuel system type.
Across the widely produced Prelude range, four injectors are standard for fuel-injected engines. If you own a very early model or a restoration that used a carbureted setup, the count may differ or be nonexistent.
Summary
In practice, four fuel injectors are standard for Honda Prelude models with fuel injection, one per cylinder. The first-generation Prelude (1978–1982) used a carburetor and had no injectors. From the 1983 model year onward, the lineup adopted four-injector fuel systems, and this configuration continued through the final generation.
Is it okay to just replace one fuel injector?
Fuel injectors work as a set, and replacing just one can lead to imbalances in your engine's performance. When one injector fails, it often indicates that the others are nearing the end of their lifespans too. Replacing all injectors at once ensures consistent fuel delivery and optimal engine performance.
How long do Honda fuel injectors last?
around 50,000 to 100,00 miles
The lifespan of your fuel injectors depends on how well you care for them, the quality of the injectors themselves, and the type of fuel you use. Fuel injectors can actually last as long as your vehicle does. Normally though, you can expect fuel injectors to last around 50,000 to 100,00 miles.
What are the first signs of a bad injector?
Signs of a Bad Fuel Injector
- Your Engine Misfires. Dirty fuel injectors may cause your vehicle's engine to misfire.
- Idling Gets Rough.
- Your Gas Mileage Drops.
- The RPM Needle Is Erratic.
- Your Car Won't Start.
- The Check Engine Light Is On.
- You Spring a Fuel Leak.
What are the common issues with preludes?
Common Issues: Fifth-Gen Honda Prelude
- Powertrain and transmission issues, including grinding gears, jerky shifts, or gear slippage.
- Electrical and ignition issues that cause stalling.
- Ball joint wear or broken ball joints causing the vehicle to lose control.
- Water collecting in the foot wells.