Laguna 2 bj.2004 1,8 16v with 120ps takes sporadic no gas

Hello there is a question in the sufu there is unfortunately not much to find My Laggi takes in lately just often no gas, there is no pattern that happens when starting as well as during the drive on the country road When I take away gas 3-4 times it usually runs again normal In the error memory nothing is stored. Crankshaft sensor I have already changed on suspicion Has one an idea what it can still be. It is a Laguna 2 bj.2004 1,8 16v with 120ps Many n thanks in advance