Services & Testing Procedure | Regent Fuel Injectors

Technical Competence

Comprehensive Fuel Injector Servicing

We at Regent Fuel Injectors specialise in diagnostic testing, cleaning and servicing of all types of petrol and gasoline fuel injectors by experienced engineers with technical accuracy and a customer-focused approach.

Using state-of-the-art diagnostic test benches and temperature-controlled ultrasonic cleaning equipment, we restore injectors to their best condition — improving engine combustion efficiency, smooth throttle pickup, and durability.

Equipment used at Regent Fuel Injectors for testing is approved by worldwide leading vehicle and injector manufacturers such as BOSCH GmbH, Delphi and Magneti Marelli, allowing us to perform precise and efficient diagnostics on all types of fuel injectors.

Pre-Cleaning Diagnostics: Static and dynamic flow measurement, spray pattern geometry, leak integrity, and electrical coil resistance.
3-Stage Ultrasonic Cleansing: Synchronized electronic pulsing in chemical solvents to dissolve baked carbon deposits internally and externally.
Post-Clean Verification: Calibrated flow bench retest verifying cylinder balance, atomization quality, and pressure hold.
Component Renewal: Installation of new 10–20 micron filter baskets, Viton O-rings, and heat-resistant pintle caps.

Comprehensive Coverage

All Types of Petrol & Gasoline Injectors Serviced

Our laboratory possesses custom adaptors, high-pressure rails, and signal drivers for all major injection architectures.

Solenoid Direct Injector GDI • ISI • High Pressure Direct

Multi-Port Fuel Injector MPFI • Port Injection Architecture

Central Port-Feed Injectors CSFI • CPFI • GM Central Systems

Throttle Body Injector TBI • CF2 • Monopoint Injection

Side Feed Injectors SF • Subaru • Nissan SR20/RB26

Continuous Injection Injectors Mechanical CIS Injectors

K-Jetronic Injectors MFI • Classic European Fuel Systems

Alternative Fuel Injectors LPG • CNG Dedicated Gaseous Rails

Racing Application Injectors High-Flow Aftermarket Injector Sets

Motorcycle Injectors High-RPM Single & Multi-Cylinder

Diverse fuel injector types serviced by Regent Fuel Injectors

Strict Quality Control

Our 11-Step Diagnostic & Restoration Procedure

Every set of injectors sent to Regent undergoes this rigorous, repeatable laboratory procedure to ensure like-new factory performance.

01

External Clean & Inspection

Injectors are externally degreased, visually inspected under magnification, and individually numbered for test report tracking.

02

Electrical Resistance Test

Coils are tested for internal electrical resistance (ohms), short circuits, heat breakdown, and operational current draw.

03

Flow Bench Pre-Testing

Static and pulsed flow rates, spray pattern geometry, and leak-down pressure integrity are recorded on calibrated test benches.

04

Component Disassembly

Old contaminated internal micro-filter baskets, hardened O-rings, and damaged pintle caps are safely extracted without damaging bodies.

05

First Ultrasonic Tank

Injectors are submerged in Tank 1 to remove baked exterior varnish, carbon crust, and heavy grease prior to internal sonic scrubbing.

06

Second Ultrasonic Tank

Injectors are dynamically cycled on and off with precise square-wave electrical pulses, dislodging varnish trapped inside the pintle valve.

07

Third Ultrasonic Tank

A specialized secondary neutral solution in Tank 3 eliminates chemical residues and flushes out ultra-fine micro-particles.

08

High-Pressure Back-Flush

Injectors are reverse-mounted on a dedicated back-flush manifold where high-pressure solvent expels all dislodged debris out the inlet.

09

Flow Bench Verification

Injectors return to the calibrated flow bench for post-clean testing: spray atomization, static flow, pulsed flow balance, and zero-leak confirmation.

10

Reassembly with New Parts

Brand new 10–20 micron filter baskets, high-grade Viton O-rings, and heat-resistant combustion seals are pressed into place.

11

Test Report & Return

A comprehensive before-and-after laboratory test report is generated showing exact flow gains, and injectors are vacuum-packed for return.

Next-Generation Fuel Systems

Gasoline Direct Injector (GDI) Servicing

Instead of delivering fuel into the intake manifold tract before the valve, GDI engines inject a microscopic mist directly into the combustion chamber under extreme pressures between 450 to 3,000 PSI, driven by mechanical camshaft pumps.

Direct injectors atomize ultra-fine droplets — as small as ±65 microns compared to ±165 microns on conventional port injectors. Because the tip sits inside the combustion chamber, high temperature carbon buildup rapidly degrades spray geometry.

Our specialized GDI test bench measures direct injection pressure dynamics and atomization distribution, restoring direct injectors to factory OEM tolerances.

View GDI Injector Models

Abbreviation	Manufacturer & Technology
FSI / TFSI	Volkswagen / Audi • Fuel Stratified Injection
SCi	Ford • Smart Charge Injection
IDE	Renault • Injection Direct Essence
JTS	Alfa Romeo • Jet Thrust Stoichiometric
SIDI	Holden / GM • Spark Ignition Direct Injection
HPI	BMW • High Precision Injection
HPDI	Porsche • High Pressure Direct Injection
Ecotec	GM, Vauxhall, Opel Direct Injection
CGI	Mercedes-Benz • Charged Gasoline Injection
DISI	Ford / Mazda • Direct-Injection-Spark-Ignition
GDI	Mitsubishi, Hyundai, Kia, Volvo, Peugeot

Diagnostic Testing, Cleaning & Servicing