On a part of cars the exhaust valve which is mounted on a joint of an exhaust pipe and a collector is provided. On the cold engine the valve will redirect a stream of exhaust gases in soaking-up collector owing to what evaporation of fuel and smoothness of operation of the engine on small speeds of movement improve.
| PERFORMANCE ORDER |
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1. On the cold engine check freedom of moving of the lever of a drive. At the complicated moving grease an axis with special refractory greasing. |
| 2. Start the engine and watch a counterbalance of the valve which at start should move to a closed position and in process of warming up gradually to be slightly opened. It is possible to designate also a closed position and after a short trip to check valve opening. |
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