glemon
Yoda
Offline
So I went to take my car to an event on Su day night and I notice the brakes are making a weird whistling or sucking sound when I push the pedal. I check and the fluid is almost dry in the master for both the front and rear brake reservoirs.
Didn't have enough spare brake fluid to refill (Dot 5, flame away!) and no parts stores open so I refill Monday kind of check everythi ng out, no pools of fluid anywhere or obvious leaks.
Pedal feels good, high and firm, doesn't drop with sustained heavy pressure so I go for a short careful drive. I have filled it tonthe very lip of the separator between the two reservoirs in the MC (same set up as a TR6) so pretty easy to tell if any appreciable drop. No apparent fluid loss.
Check again today, still topped up, go for a couple more drives, stomp on the brakes where there is no traffic and I don't have to stop. All good. No sign of losing fluid.
Here is the kicker, I have a set of air filters with a vacuum hose to the pcv system, and a set of trumpets which I put on occassionaly and let the tube hang. Could there be some weird interaction with the PCV (stock round valve like used on TR and other similar era british cars) and the brake booster wherein it was sucking fluid out of the master cylinder when I didn't have the system all hooked up, or is that just crazy talk?
I did order a master cylinder rebuild kit (it isn't that old) and will probably tear into it and see what I can find out regardless.
Didn't have enough spare brake fluid to refill (Dot 5, flame away!) and no parts stores open so I refill Monday kind of check everythi ng out, no pools of fluid anywhere or obvious leaks.
Pedal feels good, high and firm, doesn't drop with sustained heavy pressure so I go for a short careful drive. I have filled it tonthe very lip of the separator between the two reservoirs in the MC (same set up as a TR6) so pretty easy to tell if any appreciable drop. No apparent fluid loss.
Check again today, still topped up, go for a couple more drives, stomp on the brakes where there is no traffic and I don't have to stop. All good. No sign of losing fluid.
Here is the kicker, I have a set of air filters with a vacuum hose to the pcv system, and a set of trumpets which I put on occassionaly and let the tube hang. Could there be some weird interaction with the PCV (stock round valve like used on TR and other similar era british cars) and the brake booster wherein it was sucking fluid out of the master cylinder when I didn't have the system all hooked up, or is that just crazy talk?
I did order a master cylinder rebuild kit (it isn't that old) and will probably tear into it and see what I can find out regardless.