TLDR: whats the correct sequence to bleed the brakes? Rear first, front and how do you bleed the footbrake?
I picked this MP3 400LT a couple of weeks ago as a winter project with the aim of completing an Ironbutt on 3 wheels later this year (1000 miles in 24hrs!)
I've had to replace one of the forks and thus undone the brake lines on the front. I read how difficult bleeding these can be so was prepared for a fight. I reverse bled the brakes and tied up the lever and left over night. The lever was nice and firm and the brakes worked well... but the lever is still too soft to pass an MOT (I'm in the UK) as it reaches the bars.
The garage that inspected it said they could have a go at bleeding the brakes so I agreed. They've made it much worse and tell me something must be broken! The must have flushed 2 litres thought the system trying to bleed it using a mityvac.
As I only messed with the front I didn't touch the rear brake as it felt good.
Question 1: Could air be trapped in the rear line or footbrake be making the front brakes soft?
Question 2: Have since taken off the rear calliper (what a pain!) and one of the pistons was ceased - would that cause this issue?
The bleed nipple was broken off so I've purchased a brand new rear calliper and was planning to reverse bleed the system from the rear first.
Question 3: How does the footbrake work with the front/rear? I know they are combined and if you push the footbrake you can feel the pressure or rear lever on the handlebars move. Is this normal and is it bled through the combined link under the windscreen?
Any help would be appreciated as I'm going nuts!