Unless it has something to do with the linked brake system...all the other systems on the gen 3 have been used before on other bikes haven't they?
The linked brakes are simply the electronically controlled abs signal telling the mechanical system what to do.
As far as I know the abs pump itself on the gen3 is like the gsxr's, that the front and rear lines enter and exit the pump seperate from one another.
That the pump is electronically activated, and the abs applies the front And rear brakes together, as the abs controller sees fit, and that under normal braking, the front and rear brakes still function individually under normal conditions(at what levels of braking, and what percentages based on Traction Control level settings I do not know).
Regardless, no front brake lever, then quickly pumping back up is still a mechanical problem.
Given the lever is obviously directly linked to the MC, and that the several reports here that we've heard all say the same, that lever pressure was built back in a few pumps, tells me that the problem is somewhere in the MC itself.
Even though an air leak could still be happening at the ABS pump, that it would seem less likely to me, as with no fluid leaks, means that any air is moving inside the line towards the end anyway...keeping in mind these MC's have a bleeder on them too.
The only easy test I could think off would be to remove the suspected MC, and attach a line to a known functioning caliper with a rotor/piece of metal or wood for the pads to bite, bleed and get the caliper working...wait a few days and try again. If the MC still makes pressure(doubtful), then look at the pump.
Again, we're just guessing without physical parts to test.
I would still be suspect of bad master cylinders and/or cup seals.
I would also like to measure the MC bore I.D, and see how much taper is in it.
As well as seal O.D.
I would be curious to know if there is a casting or tooling flaw at the end of the MC's piston stroke, so when the spring pushes/holds the piston at the end of the cylinder, that a defect is allowing a slow leak from poor seal in that position, but after a few pumps, is back to building pressure.
If I had a bad MC, I could take the measurements on a machine that could determine that.
I would think/hope that Suzuki is working with their MC suppliers, and doing similiar right now.
Hopefully the defective factory and factory replacement parts(whatever they end up being), can be traced to one or more bad lots.
And that a recall will be issued immediately.
Most of us realize how serious this can be, and there really Needs to be a definative result, as in, it was this, and we fixed it.
I would not be comfortable as a gen3 rider at the moment.
