Attention! Under normal operating conditions, the opening for communication with the atmosphere should be open.
Pic. 2.284. Functional diagram and arrangement of elements of the toxicity reduction system: 1 - intake manifold; 2 - solenoid valve for adsorber purge; 3 - adsorber; 4 - fuel tank; 5 - opening of communication with the atmosphere; 6 - check valve (only on F4R 776 engine); 7 - solenoid valve purge adsorber (K4M); 8 - solenoid valve purge adsorber (F4R); 9 - adsorber; 10 - pipeline for supplying gasoline vapor from the fuel tank; 11 - pipeline for supplying gasoline vapors to the intake manifold; 12 - tube of communication with the atmosphere of the adsorber