Hydrogen Carbon Cleaning Performed on Mazda CX-5 SKYACTIV-D (SH-VPTS) – Niigata

孝一田﨑
1 hour ago
5 min read

We recently performed a Hydrogen Gas Carbon Cleaning on a Mazda CX-5 SKYACTIV-D (SH-VPTS engine) for a customer from Niigata Prefecture.

Current Odometer: Approx. 175,760 km
Engine Specs: Mazda SKYACTIV-D SH-VPTS / 2,188 cc Water-cooled Inline 4-cylinder DOHC 16-valve Turbo Diesel Engine
Max Output: 175 ps (129 kW) / 4,500 rpm
Max Torque: 42.8 kg·m (420 N·m) / 2,000 rpm

This model showcases Mazda’s flagship SKYACTIV diesel technology. Known for delivering exceptional low-end torque combined with the smooth-shifting 6-speed automatic SKYACTIV-DRIVE, it transfers power directly to the road while offering outstanding fuel efficiency.

As the vehicle’s mileage has reached over 170,000 km, the owner requested an engine refresh service for long-term preventive maintenance. The customer noted that they regularly use LIQUI MOLY DPF cleaner to maintain the diesel particulate filter.

Before starting the hydrogen injection process, we thoroughly inspected the engine sound, idle vibration, and exhaust emissions. We began injecting hydrogen gas at a base rate of 100 ml/h, monitoring the engine's condition closely before gradually increasing the volume.

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↓↓↓ [In-Service Impressions & Test Drive Results]

新潟県-マツダ CX-5 SKYACTIV-D・SH-VPTS型水素ガスカーボンクリーニング施工実施 — 新潟県でマツダ CX-5 SKYACTIV-Dが水素ガスカーボンクリーニング施行中。

[In-Service Impressions]

5 Minutes into Service: Holding a hand near the tailpipe exit, a faint trace of moisture is felt. A check of the exhaust pressure and flow shows no issues with overall pressure, but a slight pulse/irregularity can be felt in the exhaust gas stream. Upon revving the engine to check the tachometer, subtle needle fluctuation/stutter is observed as the engine drops back down from 2,500 rpm. We proceed with the service, focusing on whether the hydrogen treatment will resolve these symptoms. The hydrogen injection volume is gradually adjusted while continuously monitoring engine conditions.
10 Minutes into Service: Water vapor (steam) begins to exit from the tailpipe, confirming the active decarbonization process.
20 Minutes into Service: Engine noise and idle vibration have noticeably decreased. We lock in the current hydrogen injection rate to maintain steady cleaning at this optimal state.
45 Minutes into Service: Checking the tailpipe again, the exhaust pulse felt at the start has completely smoothed out into a steady airflow. The exhaust temperature has risen, indicating active carbon combustion within the system. Revving the engine once more to check the tachometer reveals that the needle fluctuation during the drop from 2,500 rpm has been eliminated, resulting in a smooth return to idle. Fine-tuning of the hydrogen injection rate continues.
50 Minutes into Service: The moisture at the tailpipe exit is beginning to dry up.
60 Minutes into Service (Completion): After continuing flow adjustments, we confirmed at the 60-minute mark that the engine idle, running sound, vibration, and exhaust flow have all fully stabilized. The service was completed at this point.

[Customer Post-Service Review]

"On the drive home after the service, I immediately noticed that the accelerator felt much lighter and more responsive. I'm so glad I could feel the real difference!"

Thank you so much for your positive feedback!

[Expert Advice: Maintaining SKYACTIV-D & Clean Diesel Engines]

We frequently receive inquiries and service requests for Mazda's SKYACTIV-D diesel engines. Owners especially start worrying about DPF (Diesel Particulate Filter) clogging and fuel injector health once their vehicle passes the 70,000 km mark.

Modern clean diesel engines are equipped with DPF systems to meet strict emissions standards. Additionally, most modern vehicles feature EGR (Exhaust Gas Recirculation) systems to improve fuel economy and reuse exhaust gases. However, these systems naturally restrict exhaust efficiency over time, putting a heavier load on the engine due to internal carbon accumulation.

Our Solution for Long-Term Diesel Health:

Hydrogen Gas Carbon Cleaning: Cleans carbon deposits directly from the combustion chambers, restoring combustion and exhaust efficiency to prevent excessive soot from flowing downstream.
Multi-Cleaner Dual Treatment: For complete system care targeting fuel lines, injectors, EGR valves, and the DPF, we highly recommend combining our hydrogen cleaning with a multi-cleaner flush.

Important Maintenance Note:Once the DPF warning light turns on due to severe blockage, preventive treatments like hydrogen cleaning or chemical multi-cleaners become far less effective. DPF replacements, EGR service, or injector repairs can be extremely costly.

Proper preventive maintenance before symptoms worsen saves money and keeps your engine running smoothly. Clean diesel vehicles offer fantastic fuel efficiency, powerful torque, and low fuel costs—making them a joy to drive. With regular care, your car will reward you for years to come.

Thank you again for choosing our service! We look forward to assisting you with your vehicle's ongoing maintenance.

At e-BLUE, we never treat any two vehicles the same. We carefully inspect and monitor the specific condition of each individual engine throughout the entire process, custom-tuning the hydrogen delivery rate to match its needs. This tailored approach drastically maximizes the overall cleaning efficiency and delivers far superior results.

「一台一機」に合わせたオーダーメイド施工 e-BLUE が選ばれる理由！。同じ車種、同じエンジンでも、コンディションやカーボンの溜まり方は、一台ごとに全く異なります。 e-BLUEでは、多数の検証を重ねた施工を実施。

If you have any questions or would like to learn more about our services, please feel free to reach out to us at any time.

Thank you for your continued support of e-BLUE and our Hydrogen Gas Carbon Cleaning services. We look forward to helping you restore your engine's peak performance!

For bookings and inquiries, you can reach us by phone or email. If you send us an email, we will get back to you as soon as we review your message. Thank you for your patience!