The booster appears to get vacuum as it should but the sponginess is more than should be.
There should be a point where the pressure increases and then goes fairly hard as the brakes are applied
I dont get to the hard bit and the first half is soft like there is no pressure.
Any ideas ??
The other thing that annoys me is that every brake shop discounts bleeding the ABS without reason - Why is that?
It connects directly to the BMC, it has the capacity to trap air, it's higher than the calipers and higher than anything else in the brake system (except the BMC which is pretty much at the same level), it has bleed valves on top of it !
I'm not a brake specialist BUT i am mechanicaly minded and logical.