Check throttle knot on lack of cracks. 
 Check purity of vacuum channels. 
 
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Check люфт an accelerator cable. 
 
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- The adjusting screw of a butterfly valve was adjusted on lines with air volume 0,516±5 in g % / with therefore it is not recommended to regulate it independently. 
 -  If frequency of idling does not correspond demanded, first of all, check the corresponding sensors. 
 -  It is not required to clear a deposit in throttle knot as it does not influence at all operability of fuel system. 
  
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