How to measure engine compression

You will need
  • - compressometer.
Instruction
Measurement of compression, it is desirable to produce after a trip by car, when the engine is warm enough. To measure the specified parameters, it is impossible to do without an assistant, because it makes the crankshaft cranked by the starter during measurements and the throttle valve must be fully open.
The tip of the compressometer with a rubber stopper at the end fits tightly into the threaded hole of the remote candle.
The assistant is given the command and he, by pressing the accelerator pedal, rotates the crankshaft with the starter for 3-4 seconds. It must be borne in mind that the rotational speed must be at least 100 rpm.

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