Air lock in the brake pipe

[mickeytwonames]

Help please
I've got some air trapped in the brake system somewhere. I've done three rounds of bleeding and even bled the four way join at the Stop lamp switch. Does anyone have helpful tips about what else I can do- the brakes work fine after a light pump and no fluid is lost so the system integrity is in tacked?

[ian.mcdougall]

Have you adjusted the brake shoes up as it could be the pistons taking up the extra adjustment

[lowride stepside]

and are you sure you've tightend every thing else up > spent hours bleeding only to find a loose union somwhere

[Trickydicky]

When you say you have a air lock in the brake pipe, have you been doing ay work on the brake circuit and what are the symptons?
Knowing this will help with a solution