General information about the fuel injection system

The ignition and injection systems are controlled by the engine management system, which, according to the classification adopted by FORD, is designated as EEC IV or EEC V. This section mainly deals with the injection system. The advantages of a gasoline injection system compared to a conventional carburetor are as follows:

• Precise dosing of the amount of fuel in each load mode, due to which low fuel consumption and a good power balance are achieved.
• Reduction of harmful components in exhaust gases due to precise fuel metering and the possibility of cleaning exhaust gases in a catalytic converter controlled by oxygen sensor signals.
• Self-diagnosis of the injection system control unit, which allows you to quickly detect defects.
• The petrol injection system is equipped with a fault code memory. If during operation there are defects in the ignition or injection system, then the corresponding codes are recorded in the memory device. If the injection system or the engine does not work perfectly, fault codes can be printed out when reimbursed to the workshop.

Attention: When the battery is disconnected, the fault codes in the memory device are erased.

The injection system works stably for a long time and requires almost no maintenance. The exception is the air and fuel filters, which must be replaced in accordance with the maintenance card. Important adjustment and repair work is carried out only with the help of expensive measuring instruments, therefore these works can only be carried out by suitably equipped workshops.

Attention: When working on the injection system, it is necessary to observe both the cleanliness rules for fuel systems and the safety precautions when working on the ignition system, see p. 47.