Securing fuel pump

Hello, I have the following problem:

So, I had to cut the fuel line and then I drove 250km without any problems, today I got 3 or 4 times the safety, but now he drives again without any problems, until now. can this be related to me, because I have cut the line? Lines were screwed and replaced with a line with the same diameter.

oh yes, today it rained, event has to do with it