Cylinder one misfire

Good afternoon,

I would start by checking the compression. That is the first thing that needs to be checked with a misfire code.

https://www.2carpros.com/articles/how-to-test-engine-compression

Roy

Injector

1. Release fuel pressure to zero.

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2. Remove intake manifold collector. Refer to "TMING CHAIN".
3. Remove fuel tube assemblies in numerical sequence as shown in the figure.
4. Expand and remove clips securing fuel injectors.
5. Extract fuel injectors straight from fuel tubes.
- Be careful not to damage injector nozzles during removal.
- Do not bump or drop fuel injectors.
- Do not disassemble or adjust fuel injectors.
6. Carefully install O-rings, including the one used with the pressure regulator.
- Use bare hands to install O-rings. Do not wear gloves.
- Apply a coat of engine oil (with a low viscosity of 5W-30, etc.) to O-rings before installation.
- Do not use solvent to clean O-rings and other Parts.
- Make sure that O-rings and other parts are clean and free from foreign particles.
- Be careful not to damage O-rings with service tools or finger nails. Do not expand or twist O-rings. If stretched, do not insert them into fuel tubes immediately after stretching.
- Always insert O-rings straight into fuel tubes. Do not tilt or rotate them during installation.
7. Position clips in grooves on fuel injectors.
- Make sure that protrusions of fuel injectors are aligned with cutouts of clips after installation.