Why should any high-pressure line removed be replaced with a new part on a GDI system?
A) The ball-ends deform when tightened and will not seal if reused
B) The torque needed to remove the lines causes the lines to be damaged
C) The high-pressure lines are part of the high-pressure pump and must be replaced as an assembly
D) All of the above

Question

Quizplus · Accepted Answer

The ball-ends of high-pressure lines in a Gasoline Direct Injection (GDI) system deform when tightened, creating a seal that is specific to the connection made. If these lines are removed and then reused, they may not seal properly due to the deformation of the ball-ends, leading to potential leaks or other issues in the high-pressure fuel system.

Why Should Any High-Pressure Line Removed Be Replaced with a New