Four-point fuel injection Opel Vectra B (petrol)

Individual components, operation, self-help, visual inspection, malfunctions and self-diagnosis, emergency operation function, fault table, component test, dismantling of individual components, throttle cable, exhaust gas composition test, assistance in case of malfunctions.

Two injection versions
In the Opel Vectra, depending on the engine, there are two different injection systems that work similarly in terms of the basic principle, but differ in the...

Injection system components
To better understand the general functioning of our injection system, we should first talk about the most important design components and concepts. Simtec...

Functioning
Interrelation of individual nodes When the engine is running, the pistons moving up and down in the cylinders suck in air. If you fully depress the gas pedal,...

Adjustment using a lambda probe
The catalytic converter can only work properly if the air quantity indicator X (lambda) is as close as possible to 1, which corresponds to a fuel-air ratio of...

Self-help
Unfortunately, many types of injection testing have become inaccessible to the amateur due to the lack of necessary testing devices. However, there is still...

Visual inspection
A leak in the area of the suction system lets in so-called by-product air. This is air that is not included in the calculations of the control unit and...

Malfunctions and self-diagnosis
The control unit of the four-point injection system has a program memory. The memory is able to recognize and remember defects that occur during engine...

Emergency mode function of the injection system
The operation of the ignition and injection system is supported by an extensive emergency mode program; if the sensor fails, a break occurs in the wire...

Checking structural units
The following sections describe tests of injection system components that you can perform yourself. In our Vectra, the diagnostic socket (arrow) is located in...

Dismantling of individual units
Removal injectors General Provisions Release the pressure in the hoses through the test connection on the fuel distribution line. Place a container under the...

Throttle cable
The throttle cable connects the gas pedal and the throttle valve of the injection system. Its biggest drawback: it is very sensitive to bending, which you...

Exhaust Gas Test (AU)
Maintenance work For vehicles with a regulated catalytic converter, the exhaust gas test is prescribed for the first time three years after the first approval...

Should I perform an idle speed adjustment?
Installation work is not necessary in our Vectra with adjustable catalytic converter, because there is nothing to adjust here. This work is performed by the...

Help with malfunctions
Four-point injection If it is not possible to read the fault memory using a special device from the Opel workshop, you can also detect faults with our help....

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