hi, hello everyone, first I apologize for the bad english, i'm italian 
since 6/7 months ago, my 2007 mercury 40/60 has a problem: normally, the minimum rpm when the gear is not innested are 730, but without any reason, sometimes it goes at 650 rpm. In that moment if I accelerate or I enter the the gear (forward or reverse) the motor dies.
i've changed the high pressure fuel pump and the IAC valve, i've cleaned the injectors, the spark plugs and the fuel filter but Nothing has changed...
Can someone help me please? I'm going crazy
since 6/7 months ago, my 2007 mercury 40/60 has a problem: normally, the minimum rpm when the gear is not innested are 730, but without any reason, sometimes it goes at 650 rpm. In that moment if I accelerate or I enter the the gear (forward or reverse) the motor dies.
i've changed the high pressure fuel pump and the IAC valve, i've cleaned the injectors, the spark plugs and the fuel filter but Nothing has changed...
Can someone help me please? I'm going crazy