my Toyota Camry Eighth Generation (2018-present) has a check engine light with code P0300, what does...

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.

2. Inspect and Replace Spark Plugs

• Tools Required: Ratchet, socket set, torque wrench.
• Remove the ignition coil(s) to access the spark plugs.
• Inspect each spark plug for signs of wear, fouling, or damage.
• Replace spark plugs if necessary. Ensure proper gap settings according to manufacturer specifications (typically 0.043 inches for Camry).
• Reinstall ignition coils, ensuring they are seated correctly.

3. Check and Replace Ignition Coils

• If any ignition coils were found faulty during inspection, they should be replaced.
• Tools Required: Ratchet, socket set.
• Remove the faulty ignition coil(s) by unscrewing and pulling them from the spark plug.
• Install new ignition coils by reversing the removal process, ensuring they are securely fitted.

4. Inspect Fuel Injectors

• Tools Required: Fuel pressure gauge, injector cleaning kit (if needed).
• Connect a fuel pressure gauge to the fuel rail to check for proper fuel pressure.
• If pressure is low, inspect the fuel pump and fuel filter.
• If fuel injectors are suspected to be clogged, use an injector cleaning kit or replace them.

5. Check for Vacuum Leaks

• Inspect all vacuum hoses connected to the intake manifold for cracks or disconnections.
• Use a smoke machine or spray carburetor cleaner around suspected areas while the engine is running to detect leaks.
• Replace any damaged hoses.