Brake fluid leak

[Stig]

Anyone else experienced this? I'm now having to top it up every couple of weeks (500 miles or so). I've gone round and checked all the unions including the connections to the master cylinder but couldn't find fluid on any of them, the wheel cylinders are dry too. I'm guessing it may be getting past the seals and coming out the piston end of the master cylinder. Thought I'd ask on here before pulling it out and replacing the seals.

[bmcecosse]

Do you have a servo ? They have been known to drink fluid - very dangerous. Clue is puff of white smoke from exhaust when braking. Otherwise - it MUST be leaking somewhere - so if all other points are dry - it must be the master cylinder leaking.

[simmitc]

Whip the drums off and have a quick look at all the cylinders. Does the system hold pressure when you press and hold the pedal? You really do need to sort this out before it leads to a serious accident.

[kennatt]

take the cover off and have a look you'll soon see if it is the master as the chassis leg will be wet with brake fluid.

[DaveH]

I have the same sort of issue, car stood all winter, no brakes, no fluid in the master cylinder... no sign of any leak, nothing on the garage floor... I will have a look in the chassis but previous experience suggests it gets out of there onto the floor if the leak is around the master cylinder... still tomorrow may yield an answer. No servo on any 'standard' Moggy I know of but I have an HA Viva as well... and yes, a lot of brake fluid can end up in the servo and not where it is supposed to be.