Brake bleeding

[davemk4]

Hi all,
i have changed from drums to disc/drum on my 75 car i went to bleed them and done them
in the right order but the pedal is soft and goes to the floor when i pump it ,it gets hard
and then soft

any ideas it the early type set up with a single master cylinder
cherrs

[StevenR]

I had the same problem on mine when I changed it from drums. I made the common mistake of putting the callipers on the wrong side of the car. Switched them around and all was good.

[davemk4]

What type of master cylinder do u have

[StevenR]

I just refurbed the original one that was in my car. Works no problem.

[davemk4]

Thanks but was it an early type single lockeed one

[Evlabe]

I had the same problem bleeding brakes, I tried and my local garage tried but we couldn't bleed them....... Then the guy at the garage looked at the calipers and wondered why the bleed nipple was at the bottom of the caliper !!!! Yes, they were on the wrong side...... For two months !!!! Check that the calipers are on the right side ie bleed nipple facing up

[StevenR]

Here's a picture of my engine bay just after i put the engine in. Hope it helps.

[davemk4]

Thanks what year is your car?

[StevenR]

It's an '81.

[davemk4]

Thanks steve can i ask on the rear subframe do u have a T piece or a brake limiting valve?

[StevenR]

As far as I remember its a T piece Dave.

[joebe1]

Did u put new calipers on or rebuild old ones? Check that u put the copper washer on the brake hose on the caliper. If all is good at that point, use hose clamps to clamp one of the brake hoses on one of the calipers, put ur foot on the pedal if no change, change clamp to other front hose. Ur isolating each caliper and therefore determining if one has an issue as theres air getting in or fluid coming out somewhere. hope this helps

[davemk4]

Thanks for that what would this prove by doing that

Thanks

[The Marcos Graveyard]

Get an Ezi-Bleed kit, uses pressurized air to push the fluid through the system, one man job.