Leonid451

Good afternoon friends ! I need your help: advice / recommendations!
Recently, my car (ADR 1.8) has a problem.
The car does not work well in all ranges of the engine (from 900 rpm to 4000 rpm), there are claps to the exhaust manifold.
The pressure in the fuel system is 3.7 bar, the residual pressure is 3 bar.
Today I measured the voltage on the contacts of the mass air flow sensor (three-contact Hitachi sensor) - the voltage fluctuates between 1.0 and 1.5 Volts.