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View Full Version : vented plug on a brake master cylender



5.4MarkVIII
08-01-2019, 04:58 PM
seem to have a leak on the new master cylinder that I have been having trouble locating.

the new master cylender came with a cap that has vent holes in it (its a pipe plug with a hole drilled in it lol)

seems tihs is where im getting fluid from. i'm confused as i thought brake fluid was hydroscopic (absorbes water) so it should be sealed. but if that was teh case why would it come with a vented plug?

was gonn put a differet plug in there that wasnt vented that should not effect brakeing would it?

ZR
08-01-2019, 06:32 PM
Yes normally 100% sealed but not sure what that car would have come with.
Is old cyl cap vented?

5.4MarkVIII
08-01-2019, 07:08 PM
I’ll have to check but I dont think it was.