Carbon Cleaning & Walnut Blasting
Direct-injection engines build up carbon on the intake valves over time — causing rough idle, misfires, and power loss. We remove it with walnut blasting media, restoring airflow and performance without damaging your engine.
Walnut Blasting — The Right Way to Clean Intake Valves
Unlike chemical cleaners that can't reach heavy buildup, walnut shell media physically blasts carbon deposits off intake valves and ports. It's the same method dealerships use — and the only one that actually works on severely clogged valves.
Walnut Shell Media Blasting
Crushed walnut shells are blasted through the intake ports at controlled pressure. The media removes carbon without scratching or damaging aluminum valve surfaces — aggressive enough to clean, gentle enough to protect.
Before & After Documentation
We photograph your intake valves before and after cleaning so you can see exactly what we removed. The difference is dramatic — and you'll feel it in how the car drives.
Restored Performance
Carbon-clogged valves restrict airflow and disrupt the fuel-air mixture. After cleaning, you'll notice smoother idle, better throttle response, improved fuel economy, and the power your engine was designed to deliver.
3-Year / 36,000-Mile Warranty
Every service backed by our warranty. Quality work, documented results.
Port-injected engines spray fuel over the intake valves, keeping them clean. Direct-injection engines — which includes nearly every modern Audi and VW — inject fuel directly into the combustion chamber. Nothing cleans the valves. Carbon from crankcase ventilation accumulates over time, and by 60,000-80,000 miles, the buildup can cause noticeable drivability problems. Regular oil changes help slow the process, but walnut blasting is the only real solution once buildup occurs.
I was very impressed with the inspection report i received, it was very in depth and made the diagnosis very easy to understand as someone who is mechanics illiterate. it even had pictures! Heather and her team were very helpful in diagnosing a laundry list of issues with the GTI that I had recently purchased. I was very impressed with the inspection report i received, it was very in depth and made the diagnosis very easy to understand as someone who is mechanics illiterate. it even had pictures! Heather was very kind and helpful in guiding me in the right direction of what to do moving forward. Thank you Reflex!!