Hi everybody, last week got me an old Navara d22 from 1999, it has a good engine, but it has an issue with a high-pressure fuel pump and the previous owner put an additional pump after the fuel filter. The pump starts when the ignition is on and helps the main pump. It works fine. My question is if I mistakenly leave the ignition on without the engine running, will the pressure build-up and brow the hoses? or there is an overflow line and the fuel will just go back to the fuel tank?