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  1. At the muffled engine some times squeeze out a pedal of a foot brake for the purpose of dump of residual depression in the vacuum amplifier.  
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 2. Completely having dumped depression in the amplifier, press a pedal a hand and estimate size of its course till the moment of occurrence of resistance. Demanded value makes 3 ÷ 8 mm.   | 
 
 
3. At excessively low size of a free course of a pedal check up correctness of adjustment of the gauge-switch of stoplights.   4. Excessive люфт it is usually connected with deterioration of a cutting finger / its pin or a basic arm of a pedal. Replace defective components.   |