EGR stall test question

[fixkick]

no do not widen them they are injectors. they are calibrated. as all injectors are. fuel or EGR
sure coat hanger it , in a real shop for years, the mech ., throws the whole intake in the trash, imagine a $1000 + bill for that.
clean it best can , no aNAL RETENTION HERE, it gets dirty fast. its exhaust, after all.
then make an effort to to the the nozzles 100% clean the last 1/2" or the last narrow part fully 100% clean, the whole ORIFICE. i use drills and (i have full number set 1 to 6) and work
it till i get alum, shavings, just tiny bit.. so at SHINE.
then blow on each port (nozzle) to see if each blows same to EGR main, hole.
yes, its DONE. the INTAKE is done
but do also clean the rear port on the intake that EGR bark port to to the tunnel tube.
then the tunnel, ream it out too.
that is how i do it. (if my bark is weak , i clean the exh #4 EGR "U" turn. (my intake has a S bend section on input too.)

have 2x , 3 foot extra vacuum lines, no tools try this, i just added, it, I use vacuum tools and T fittings but this works too.

http://www.fixkick.com/EGR-Gen2a.html#Notools