7.4.11. Tachometer check

Insert a writing paper clip into the socket of the sensor of frequency of rotation of the engine from a plait of wires, and connect an external high-precision tachometer.

NOTE For tachometer check, use an external high-precision inductive tachometer.

Compare indications of a tachometer of the car and an external tachometer on all turns of the engine, and check on compliance to nominal rates.

Nominal rates:

700 ^mines-1 ±100 ^mines-1;

3000 ^mines-1 ±150 ^mines-1;

5000 ^mines-1 of ± 250 ^mines-1;

6000 ^mines-1 of ± 300 ^mines-1.