In article <1116316727.085769.311140@g47g2000cwa.googlegroups .com>,
mmdir2002@yahoo.co.uk wrote:

> I took my 89 Civic car to two mech. They told me my car is leaking
> from m/c. They told me to replace right away. I talked about brake
> line leaking. They jacked it up and showed me my brake line are all
> fine. He said just change the m/c. My simply thought is m/c is so
> small I'm thinking I can changed by myself. I believe
> the leak is between m/c and power boost. is there a seal or
> gasket place bewteen m/c and power boost. all I can do is just
> unscrew two bolts holding a m/c from power boost. do you think
> I just replace the seal or gasket rather than replace the whole
> master cylinder?

That's bad news if it's leaking out near the booster.

You can probably replace the MC yourself but you must have the repair
manual. There's lots you can screw up without following the procedures
and knowing the specifications. The consequences would be severe.