GDI engines deliver high fuel efficiency and power — but they’re also prone to specific issues like intake valve carbon buildup, injector clogging, and lean fuel conditions. Traditional methods often miss these problems, which can lead to unnecessary repairs.

At The Garage MKG, we understand the engineering behind GDI systems used in vehicles from BMW, Audi, Volkswagen, and other modern platforms. Our process ensures we detect fuel delivery faults accurately, saving you time, frustration, and money.

Our team uses OEM-level scan tools, pressure transducers, and oscilloscope waveform analysis to test every component in the GDI system — from the high-pressure fuel pump and injectors to low-side delivery circuits and PCM controls.

We verify data against manufacturer specifications, confirm system integrity, and identify whether the issue is electronic, mechanical, or contamination-based — before recommending any repair.

If you’re experiencing rough idle, cold-start misfires, poor fuel economy, or hesitation under load, these are all hallmark signs of GDI-related faults.

Our technicians perform targeted cleaning, injector testing, and fuel trim analysis to restore performance. When needed, we also coordinate walnut blasting or other professional cleaning services to remove carbon buildup from intake valves and combustion chambers — restoring lost power and efficiency.

Don’t replace parts based on guesswork — get the answers your vehicle deserves. Schedule GDI diagnostics with The Garage MKG today. Call (231) 246-7735, visit us at 1860 Henry St, Muskegon, MI, or book online anytime.

You’ll receive a detailed digital inspection, clear explanations, and honest recommendations backed by real data — because transparency is at the core of everything we do.