NS Front Brake Not Working - ABS Issue?

[Tractor Dave]

I have a spare abs unit here if you are stuck.

[K Simmonds]

That is odd. As Mac say's could be the solenoid in the ABS unit.

I was going to suggest a collapsed fleixi pipe but you've ruled this out by the sounds of it...

[steverrquattro]

After a good period of driving it will operate as normal like it did on the journey back from Torquay to Doncaster. I think I will start taking a look at the unit this weekend.

Can someone please tell me how to purge the ABS?

[mac2226]

Alright steve it could be the solenoid in the abs unit as this happened to a friends s2 coupe aby

[steverrquattro]

Today I decided to look at the NS brake calliper as the car is swerving to the right when braking. One the capper was removed from its mounting I depressed the brake pedal to force the pistons out but they never moved. Next I undid the bleed nipple and engaged the assistance of Mrs Brown with some down/up brake pedal operation. Surprisingly nothing canes out so I then removed the calliper to check the flexi hose and still nothing came out despite inserting a wire and checking for blockages. Last of all I undid the brake pipe from the outlet on the ABS unit and that gave the same result. Anyone had anything similar, maybe it’s the brake bias valve? The only other thing I’ve noticed is the brake pedal is quite hard but after a while it has freed up and the calliper starts working again but goes back to normal after leaving for a week.