Hydrogen Carbon Cleaning for Honda Shuttle (L15B Engine) in Tokyo
- 孝一 田﨑
- Jun 8
- 5 min read
Customer's Car: We recently had the pleasure of performing a Hydrogen Gas Carbon Cleaning on a Honda Shuttle (L15B Engine) from Tokyo!
The vehicle's current mileage is approximately 36,400 km. It is powered by the L15B model—a 1,496cc Direct Injection DOHC i-VTEC engine, which delivers a maximum output of 129 ps (95 kW) at 6,600 rpm and a maximum torque of 15.6 kg·m (153 N·m) at 4,600 rpm.
This service was proudly performed at the [2026 GR Yaris Owners Meeting in Jibusaka Kogen Ski Resort].
The owner requested this engine refresh to ensure the car stays in peak condition for years to come, especially now that the mileage is starting to build up. It’s a smart choice for long-term vehicle maintenance!
After completing our initial checks—including engine noise, vibrations, and exhaust pressure from the muffler—we began preparing for the hydrogen gas injection.
We started the injection at a flow rate of 100 L/h, carefully monitoring the engine's condition as we gradually increased the hydrogen volume.
Scroll down ↓↓↓ for the [In-Progress Service Impression]!
ブログの続き部分（施工中インプレッション）ですね。こちらもSEOを意識し、作業の臨場感や技術的なディテールが海外の車好きやメカニックに伝わるよう、自然で専門的な英語に翻訳しました。
Engine vibration（エンジンの振動）、Idling stability（アイドリングの安定性）、Exhaust flow（排気の流れ）など、検索されやすいメンテナンス関連のキーワードを盛り込んでいます。
英語版ブログテキスト（施工中インプレッション）
[ In-Progress Service Impression ] ↓↓↓
5 Minutes into the Service: A slightly damp exhaust began to emit from the tailpipe. I placed my hand near the exhaust outlet to check the exhaust pressure, and it felt completely normal. However, there was a slight pulse or unevenness in the exhaust flow. I revved the engine once to check the idling gauge, which showed no issues. We proceeded with the cleaning while monitoring whether this slight exhaust pulse would improve, gradually increasing the hydrogen injection rate while keeping a close eye on the engine's behavior.
10 Minutes into the Service: Water vapor started coming out of the exhaust pipe. We continued the process while finely adjusting the hydrogen gas flow.
20 Minutes into the Service: The engine noise and vibrations began to noticeably settle down. At this point, we locked in the hydrogen injection rate.
40 Minutes into the Service: I revved the engine a few times to assess its response. Checking the exhaust outlet with my hand again, the slight pulse noticed at the beginning was completely gone, and the exhaust was flowing beautifully and smoothly. From here, we made final adjustments to the hydrogen volume as we entered the home stretch.
50 Minutes into the Service: Checking the exhaust outlet, the exhaust felt much drier, indicating that efficient and thorough combustion was successfully taking place inside the engine.
60 Minutes (Full Session Completed): After a full 60 minutes, we confirmed that the engine was idling perfectly, and both the engine sound and the exhaust flow had completely stabilized. With these excellent results, the hydrogen carbon cleaning session was officially complete!
[ Customer Feedback & Impression Post-Service ] ↓↓↓
[ Post-Service Feedback from the Owner ] ↓↓↓
Here is the wonderful feedback we received from the customer a few days after the service:
"The engine response has noticeably improved!"
"Fuel economy is up, making it much easier on my wallet."
"Both my car and my wallet are extremely happy!"
We are absolutely thrilled that the owner could feel the immediate benefits of the treatment!
As we noted during the first 5 minutes of the service, the slight pulse in the exhaust flow was completely resolved, resulting in a beautifully smooth exhaust output.
🛠️ How Hydrogen Carbon Cleaning Works
By undergoing Hydrogen Gas Carbon Cleaning, the entire engine cycle—from Intake → Combustion → Exhaust efficiency—is thoroughly restored and cleaned.
When combustion efficiency increases:
Power and torque are delivered much more effortlessly.
You won't need to press the gas pedal as hard, which directly leads to improved fuel efficiency.
It significantly reduces engine load and stress, extending the lifespan of your vehicle.
If you notice anything else or have any questions down the road, please feel free to reach out to us anytime.
Thank you so much for choosing our services for your Honda Shuttle. We look forward to supporting your automotive life for many years to come!
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