26 replies to this topic

[Elwyn]

I know this was a long time ago but I think I have exhaust smoke / loss of brake fluid problem. How is it fixed? What’s the part that fails that allows brake fluid get where it shouldn’t?

[sonscar]

Master cylinder,Steve..

[Elwyn]

Thanks. I’ve recently replaced that part.

[sonscar]

The only place that has fluid is the cylinder.The servo could be full of previously leaked fluid,Steve..

[Elwyn]

I changed the master cylinder, most of the hard brake lines, introduced flexi hoses to the master clinder, has front calipers and rear drums off. All drained. Reassembled. Pumped through and bled. No old fluid remaining.

[Elwyn]

And I took the servo apart and fitted replacement / service parts

[Elwyn]

So it’s probably something I’ve done wrong. How to check? Signs of brake fluid at the manifold end of the stiff and chunky vacuum hose?

[coopertaz]

have you renewed master or just seals? have had issue with moisture at bottom of mater cylinder bore causing damage so seals would not repair issue so needed new cylinder. could check for this if still leaking to servo

[Elwyn]

It was a new, complete unit from mini spares

[coopertaz]

easy to check as you have flexy hoses on master, remove from servo if it's leaking will be obvious signs at end of cylinder and you can also inspect inside servo, admittedly only partially, at the same time. this is the only way it can get into inlet

[Elwyn]

Yes. Flexi hoses. I’ll disconnect and check. If it is leaking from a new (approx 2 years old and hardly used) part, is it worth fitting a service kit of seals or bite the bullet and get (another) new unit?

[Elwyn]

Brake master removed. No leaks. Dry as a bone. Now wondering what else could be behind the white smoke. I haven’t cast a Papal vote so it can’t be that.