Professional Ultrasonic Fuel Injector Cleaning  and Flow Testing Services.

GDI Injectors : Gasoline Direct Injection

GDI Fuel Injector Cleaning and Flow Testing to include a before and after flow sheet  Only $25.00 per injector  (24 -48 hr turn around times)

Vehicle manufacturers are switching to GDI or Gasoline Direct Fuel Injection to meet better performance and greater fuel economy. Gasoline Direct Injection is the way forward.

Instead of delivering the fuel to an injector in the intake track before the intake valve, GDI or gasoline direct injected engines inject a very fine mist of fuel, at fuel pressures that vary between 700 — 2000 lb/sq in. directly in to the combustion chamber. To achieve these pressures, the gasoline is pressurized by a high pressure fuel pump that is mechanically driven and electronically controlled.

GDI or Gasoline Direct Injection enables the engine to operate at a stratified charge combustion, described by most of the vehicle manufacturers as an Ultra Lean Burn mode, giving a much improved fuel efficiency, great engine torque and reduced Exhaust Emission levels at low load.

With the sequential firing GDI systems, the injector only opens to a maximum of 5mS. As the fuel requirement increases, the injector remains at 5mS and the pump pressure increases to meet the demand, allowing the injector to open and close quickly and efficiently. No more "Duty Cycle" as we have known it. These engines use a very expensive high specification injector, Hitachi, Bosch, Denso and Siemens being the major suppliers.

Carbon can build up on the tip of the direct injector and interfere with the distribution and atomization of the fuel. Even the slightest loss of the fuel delivery will have an adverse effect on the engines Drivability, Power Output, Fuel Economy and Exhaust Emissions.

Depending on the engine requirements, this style of injector can have varying types of spray patterns, but all of them will be atomizing a much smaller fuel droplet size than a normal fuel injector. Conventional injector would have a fuel droplet size of +/- 165 micron, where some GDI injectors would produce a fuel droplet of only +/- 65 micron.

Fuel Distribution and Atomization is equally critical to the engine's correct running, performance, fuel economy and emission outputs. A clogged fuel injector or a set of dirty fuel injectors will cause a range of problems and in some instances even severe engine damage. 

Our test equipment allows us to critically examine these clogged fuel injectors for Correct Electronic Operation in response to changes in mS, RPM and proper atomization as well as the proper cleaning techniques that will alow us to restore your GDI injectors to original specification.

GDI injectors are difficult and time consuming to remove and re-fit; would you fit a set of injectors without ensuring they are working correctly?

Insist your dealer/mechanic/technician send your dirty fuel injectors or clogged GDI fuel injectors to us for cleaning before they attempt to replace them with expensive new ones. If the injector does not perform up to spec or we can not clean it, we will not charge you for the time spent, only for the return shipping if you want the injectors returned.

Acronyms for Direct injection:

GDI = Gasoline Direct injection (Mitsubushi GDI)
FSI = Fuel Stratified Injection (VW)
SCi = Smart Charge injection (Ford)
HPi = High Precision Injection (BMW)
JTS = Jet Thrust Stoichiometric (Alfa Romeo)
GTDI = Gasoline Turbocharged Direct Injection (Ford)
IDE = Injection Direct Essence
SIDI = Spark Ignition Direct Injection (Holden)

GDI Fuel Injector Cleaning and Flow Testing to include a before and after flow sheet  Only $25.00 per injector      (24 - 48 hr turn around times )

Note: Due to cost we curently do not replace some of the O-rings and seals on some of the GDI injectors we service.