Re: Brake pedal won't firm up after bleeding
You may need to vacuum bleed them. At the factory we had a specially made cap for the master cylinder that we hooked an air compressor to. We had a table specially made just for bleeding the brakes, there were mounts for all the calipers and a mount for the master cylinder built into the table. The entire brake system was assembled on this table before it went into the buggy. The air compressor had a regulator at the end of the line just before the fitting that hooked to the cap on the master cylinder. The air pressure was turned down to the lowest possible point on the regulator, then it was hooked to the master cylinder which was full of fluid and then we bled them as normal with the air assist. You would be surprised by the air bubbles that were forced out. We would bleed 20 - 30 sets of brakes at a time and coil the whole assembly up and stack them in a crate. as long as the master cylinder was not turned too far to the side they would stay pre bled until they were installed in the buggy. It worked pretty slick. I guess I'm getting long winded here, but my point is a vacuum bleeder might be what you need.