[Konstantinos]

What if the number was 0? It does nothing.

Change to:

pawn Код:

public EngStart(playerid)
{
    new Float:vehHP, vehicle = GetPlayerVehicleID(playerid);
    GetVehicleHealth(vehicle, vehHP);
    if(vehHP >= 500)
    {
        Eng[playerid] = 1;
        SendClientMessage(playerid, COLOR_YELLOW,"Engine is succesfully started");
        TogglePlayerControllable(playerid, 1);
    }
    else
    {
        switch(random(2))
        {
            case 0:
            {
                Eng[playerid] = 1;
                SendClientMessage(playerid, COLOR_YELLOW,"Engine is succesfully started");
                TogglePlayerControllable(playerid, 1);
            }
            case 1:
            {
                Eng[playerid] = 0;
                SendClientMessage(playerid, COLOR_YELLOW,"Engine failed to start, please try again");
                TogglePlayerControllable(playerid, 0);
            }
        }
    }
    return 1;
}