The 5-stroke water-injected engine // Tested on Golf MK5
How to Test the High Pressure Rail with VCDS? (To find out if an injector is leaking for example)
In order to continue the short articles on VCDS Diagnostics and following the article on the turbo pressure test on 2.0 TDI, here is an article dedicated to the High Pressure Rail test. This test will allow you to know if you have a leaking injector.
A leak on the high pressure injection rail on our 2.0 TDI engine could create different phenomena on your engine. Our TDI engine has high pressure injectors and they should not be neglected!
We discussed it with Eric from E3 Performance in Metz a while ago and he gave me some very interesting feedback on the subject. Indeed, he had had a few cases in the workshop and had identified an injector leak on several occasions on VW GOLF 5 Gti, VW GOLF 6R or Audi S3 8P.
Reminder on how an injector works
The injector is part of your engine's fuel system. The injectors of our TFSI engine are high pressure injectors, which operate in direct injection (the fuel is injected directly into the combustion chamber).
Also note that we are talking here about direct gasoline injection with the Bosch Motronic MED 7 system (for our EA113 engine) but that this article is generally valid for all engines using the group's high pressure injection. : FSI, TFSI or TFSI.
It is the injector which releases the jet of fuel necessary for powering the engine, we also speak of mist or vaporization.
How an injector works
During injection, the magnetic coil integrated into the injector is driven, which creates a magnetic field. This causes the magnetic armature to be excited by a needle, the valve opens and fuel is injected (vaporized
If the coil is no longer energized, the magnetic field collapses and the valve needle is pushed back into the valve seat under the action of the pressure spring. Fuel flow is interrupted.
The elements that make up an injector
the injector nose is made up of a nozzle closed by a needle
the upper part of the injector contains an electromagnetic core, controlled by the computer which raises the needle for injection.
The injection duration
Then, the injection duration is one of the important criteria for our engine, just like its cc capacity. This is the duration of this jet, which is also called injection time, electrically controlled by the engine management computer, according to the parameters recorded by the sensors (engine temperature, accelerator pedal position, engine load determined by the pressure of the engine). air in the intake, etc.).
Causes of injector leak
We often wonder why an injector can leak and that's a very good question.
The 5-stroke water-injected engine // Tested on Golf MK5
How to Test the High Pressure Rail with VCDS? (To find out if an injector is leaking for example)
In order to continue the short articles on VCDS Diagnostics and following the article on the turbo pressure test on 2.0 TDI, here is an article dedicated to the High Pressure Rail test. This test will allow you to know if you have a leaking injector.
A leak on the high pressure injection rail on our 2.0 TDI engine could create different phenomena on your engine. Our TDI engine has high pressure injectors and they should not be neglected!
We discussed it with Eric from E3 Performance in Metz a while ago and he gave me some very interesting feedback on the subject. Indeed, he had had a few cases in the workshop and had identified an injector leak on several occasions on VW GOLF 5 Gti, VW GOLF 6R or Audi S3 8P.
Reminder on how an injector works
The injector is part of your engine's fuel system. The injectors of our TFSI engine are high pressure injectors, which operate in direct injection (the fuel is injected directly into the combustion chamber).
Also note that we are talking here about direct gasoline injection with the Bosch Motronic MED 7 system (for our EA113 engine) but that this article is generally valid for all engines using the group's high pressure injection. : FSI, TFSI or TFSI.
It is the injector which releases the jet of fuel necessary for powering the engine, we also speak of mist or vaporization.
How an injector works
During injection, the magnetic coil integrated into the injector is driven, which creates a magnetic field. This causes the magnetic armature to be excited by a needle, the valve opens and fuel is injected (vaporized
If the coil is no longer energized, the magnetic field collapses and the valve needle is pushed back into the valve seat under the action of the pressure spring. Fuel flow is interrupted.
The elements that make up an injector
the injector nose is made up of a nozzle closed by a needle
the upper part of the injector contains an electromagnetic core, controlled by the computer which raises the needle for injection.
The injection duration
Then, the injection duration is one of the important criteria for our engine, just like its cc capacity. This is the duration of this jet, which is also called injection time, electrically controlled by the engine management computer, according to the parameters recorded by the sensors (engine temperature, accelerator pedal position, engine load determined by the pressure of the engine). air in the intake, etc.).
Causes of injector leak
We often wonder why an injector can leak and that's a very good question.
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