AutoXscan X636 PRO – Professional GDI Injector Cleaner and Tester

1. Device characteristics

The autoXscan X636 PRO is an advanced workshop device designed for cleaning and testing gasoline injectors , both high-pressure GDI and low-pressure EFI/FSI/TFSI . Its design combines:

• ultrasonic bath ,

• testing module ,

• pulse injector control system ,

• full assembly equipment ,

• BMW GDI adapters .

The X636 PRO model also has a pull-out drawer for accessories , an integrated body and reinforced signal connectors.

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2. Supported injection technologies

X636 PRO supports all popular petrol injection systems:

• GDI (Gasoline Direct Injection)

• FSI / TFSI (Volkswagen / Audi)

• EFI (Electronic Fuel Injection)

• Indirect gasoline injection – classic low-pressure injection

The device supports the full range of control voltages required by high-pressure injectors:

• 12V

• 70V

• 120V

The system automatically recognizes the required GDI injector voltage and alarms when the voltage is mismatched.

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3. What is the client's opinion on this?

Have you ever dealt with faulty injectors in BMW engines? Diagnostics are expensive, but above all, time-consuming ! This includes shipping the injectors back. Now you can have them checked on-site. Plus, local garages have an "injector guy" closer, so you can still accept B2B orders:

4-cylinder BMW GDI

• N13 – 1.6 Turbo (116i / 118i / MINI Cooper S)

• N20 – 2.0 Turbo (20i / 28i)

• N26 – 2.0 Turbo SULEV

• B38 – 1.2 / 1.5 Turbo

• B48 – 2.0 Turbo (20i / 30i / 40i and MINI)

6-cylinder R6

• N53 – 3.0 NA (DI, DE/CH market)

• N54 – 3.0 Twin Turbo

• N55 – 3.0 Twin-Scroll Turbo

• S55 – 3.0 Twin Turbo (M3/M4)

• B58 – 3.0 Turbo, also Toyota Supra

• S58 – 3.0 Twin Turbo (M3/M4/M2 G87)

V8

• N63 – 4.4 Twin Turbo

• S63 – 4.4 Twin Turbo (M5/M6/X5M/X6M)

V12

• N74 – V12 Twin Turbo (760i, Rolls-Royce)

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4. X636 PRO Testing Functions – Full Diagnostic Range

The device performs a complete suite of injector performance tests. All of the following functions have been enhanced while retaining their original meaning:

01. Ultrasonic cleaning

• pulse control of injector operation during cleaning,

• cleaning fluid activated by ultrasonic waves breaks down carbon deposits,

• ability to clean multiple injectors simultaneously.

02. Idle Speed ​​Test (0-20 ms)

Simulation of injector operation at typical opening time at idle speed.

03. Average Speed ​​Test (0-7.5 ms)

Analysis of injector operation at medium speeds.

04. Fast Run Test (0-4 ms)

Reflection of injection operation at high revs.

05. Acceleration Test

Simulation of instantaneous demand – sudden increase in pulse frequency.

06. Gear Shift Speed ​​Test

Dynamic test with short pauses simulating releasing the throttle while changing gears.

07. Leak test

Verification:

• maintaining pressure,

• lack of dribbling (dropping),

• tightness of the spray tip.

08. Idle Spray Test

Evaluation of spray quality at low load.

09. Medium Speed ​​Spray Test

Control of stream stability and droplet uniformity.

10. Quick Spray Test

High RPM Behavior Verification – Detects restricted flow.

11. Backflush

Reverse injection (from outlet to inlet), removing deposits from the filter mesh.
Works with top feed injectors.

12. Cleaning without disassembly (On-Car Cleaning)

Possible after using special adapters.
Cleaning is performed with the engine running, without removing the injectors from the head.

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5. Device technology

Ultrasound + pulse control

Combining these methods allows you to:

• break down mechanical carbon deposits,

• clean the needle and tip chamber,

• remove deposits from GDI intake filters.

Precise pressure and pulse control

The device allows you to adjust the opening time and pulse frequency, thanks to which:

• comparative tests can be conducted,

• assess dose uniformity,

• recreate operating conditions close to the real engine environment.

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6. Cleaning and testing fluids – detailed recommendations

Test fluid

It is used only to evaluate the injection operation.
Required features:

• colorless,

• odorless,

• non-corrosive,

• low volatility.

Recommendation: professional test fluid for injectors.

Alternative: medical alcohol ≥75% .

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Cleaning fluid

It is intended to remove deposits and carbon deposits.
Characteristics:

• strong corrosiveness,

• flammability (typical for ultrasound fluids).

The best choice: professional ultrasonic injector cleaning fluid.

Alternative: medical alcohol ≥75% (lower effectiveness).

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7. Full injector control - function package

• Homogeneity test – volume comparison between injectors.

• Spray quality test – visual assessment of the spray, supported by backlighting.

• Leak test – dribbling and pressure loss check.

• Flow test – dose measurement under specific conditions (pulse time/frequency).

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8. Device selection – why X636 PRO

A device designed for the growing number of GDI engines that require regular injector servicing.
X636 PRO provides:

• compatibility with most injectors available on the market,

• support for three control voltages (12V / 70V / 120V),

• combination of ultrasound and pulse control,

• cleaning function without disassembly,

• work with high-pressure injectors from brands from Europe, the USA and Asia.

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9. X636 PRO Kit Contents

(no changes - full set)

• X636 PRO main unit

• Funnel

• Ultrasonic bath bracket

• Drain valve

• 6 pcs. sealing gaskets

• 4 pcs. oil separator mounting rods

• 4 pcs. mounting nuts

• 6 pcs. upper inlet connectors φ11/12/12.5/13/14/15

• 6 pcs. inlet connectors φ16

• 6 pcs. conical top connectors φ10.5 and 13.6

• 6 adapter cables

• Power cable

• Oil separator

• 6 pcs. special BMW GDI adapters

• 6 pcs. special seals

• 5 pcs. oil separator plugs

• Ultrasonic bath cover

• User manual (EN)

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10. Summary

The X636 PRO is a complete device for:

• ultrasonic cleaning,

• dynamic testing of injector operation,

• diagnosing leaks,

• reproduction of real conditions,

• GDI/FSI/EFI injection support (low and high pressure),

• working with the full BMW GDI catalog.

This makes it one of the most universal tools for professional petrol workshops.