S10 M/C Bleeding Tips?

[Hydratech®]

We have seen a change from the usual supplied bleeding hoses to port plugs in most replacement master cylinders commonly available at the parts stores too. It's almost funny (not!) when a customer calls and inquires about the (old school) bleeding hoses, as we supply master cylinders to the customers with clear instructions on how to bench bleed the mc's using the superior SUPPLIED port plugs. This immediately tells me that the customer has not read the instructions, which of course are designed to save them headaches. The largest reason for the change from the hoses to plugs is that you conclusively know you are done bench bleeding the mc when you can no longer stroke the mc piston inward vs the hose method which will only allow a (possibly false) visual confirmation...



Alternately, I will use my fingers as "check valves" on the mc ports while bench bleeding (!?). This allows fluid pressure to build against my finger tips when I push the piston inward, to where I then back off of the ports slightly and allow the fluid to come out, then re-apply pressure to my finger tips to close the ports (when stroking back out) to prevent any air from sucking back in. This allows you to really feel what's going on, especially when a particular mc is being a little troublemaker.