Setup is standard 205 gti master cylinder, modified with a front / rear split( as opposed to normal diagonal split on later cars), with a brake bias fitted and the rear compensators removed.
I have been fitting new brake lines, MC and one rear caliper. So the system is being bled from empty. The rear has bled perfectly at the bias valve and both rear calipers. The difficulty is bleeding the front calipers, as the MC outlets for the front don't seem to prime and no fluid appears at the bleed valve. I guess this is an air lock.
Any suggestions?
Thanks