Blowing my secondary air inj
97 540i 6
I pulled the vacuum line off and i couldnt blow air into the secondary air inj valve.
IDK how it works
but im getting 3500rpm and above complete break up like NO FUEL
Chased every option but computerthat valve ,the idle air control valve has a small valve undeer it too but i thinkkkkkkk that for cruise control,
The one in the back of the intake manifold. hooks up toa hard black 3/8 metal vacum line that meets in the front and connects to idle air contrl valve and another small valve.
The one in the back I couldnt suck or blow into it. is that mean its bad?