OK here's my situation... Yesterday I did a tune-up on my car.. When changing the pads I found my driver side caliper had a ripped piston boot.. So I went ahead and got new calipers.. Calipers and pads mounted I went ahead to do the bleeding.. Here's where my problem is at.. My front driver side and rear passenger side bleed just fine.. But my front passenger and rear driver sides do not bleed out... Any and all suggestions will be appreciated... I'm starting to think it might be my MC or my proportioning valve...

 

I'm ordering the new master cylinder now... hopefully this will help.. still open to suggestions though

 

You're on the right track. I had the same problem on my em1, ended up replacing both. My portioning valve was garbage. Replaced it, worked for 6 months then the MC went.

 

changed out the MC but still no luck ... next step I guess is the dual proportioning valve...so here's my question....should I just pick up a model specific one or would I receive any benefits from getting a 40/40.....

 

if you have rear discs then yes

if not, then no.

honestly i have driven cars with rear discs with 40/40 and didnt feel a diff from mine (rear disc with stock valve)

 

The bolt that holds down the brake line to the caliper has a hole that needs to line up with the hole in the brake line. score it and tighten down to just tight enough does not need to be real tight. will not leak.