I installed a rebuilt chrome Master cylinder, and due to my advanced age, forgot to bleed the master. Well, idiot is trying to bleed the whole system but no luck. Then my brother-in-law, a former auto repair shop owner & 1950's hotrodder, reminded me of common sense (bleed the master cylinder, idiot!). Since my NS is installed, I thought why the need to remove again & place on a bench for bleeding.

Can I simply leave the MS on the car, remove the current lines to the proportion valve, & install lines looping back into both reservoirs? Then I can use my brake pedal to slowly pump the MS until I see no more air bubbling to the top? or must I remove the MS & bench bleed? My MS only has holes for the lines to the proportion valve & no bleed screws for either front of rear reservoir.

You humble servant...

:clonk:

You can bench bleed the MS on the car, but it must be LEVEL. If not, air gets trapped in the high point and is impossible to get out. You'll probably have to jack the back of the car up quite a bit, esp if you have a power brake booster, as they sit in there at quite an angle. I recall the manual MC's sit a lot closer to level.

Thank you!