hilder91 wrote:andy666 wrote:Just a note. There is no need to crank the engine with the injector lines loosened off to bleed the air out. Just put everything back together, pump the hand primer until it goes hard and start the engine like normal.
The high pressure fuel pump flows enough fuel that it pushes the air out off the common rail.
the hand pump only prims it to the pump it doesn't bleed the air in the lines.
When the engine cranks, the high pressure pump flows enough fuel that it pushes the air out of the rail and injector lines and returns to tank.
It was only the older rotary and in line pumps that needed the lines cracked. That's because they had no high pressure pump, only a low pressure lift pump. Even then if your lazy, they would eventually fire without cracking the lines