7 replies to this topic

[Italianjoblofty]

As the title says really guys. I have converted my mini to metro 4 pot calipers and the whole brake lines etc are all brand new so i have had to bleed the whole system. The back drums bled easy but the front where a night mare. Just want to know what i am doing wrong? There are 3 bleed nipples per calipers so just wondering if there is an order to bleed them in?

[03jkirk]

always do the bleed nipple at the top last and bearing this in mind more or less follow the bleed sequence for standar brakes. also make sure the caliper are definatly on the correct side as it is common mistake to get them on the wrong side you need to check there is a bleed nipple is at the top and that the 2 point upwards

[Italianjoblofty]

Yup they are def on the correct side and i bled the nipples at the bottom of the caliper first and the top last. Dont know what else to do. Im not using a servo so maybe i just need to press harder lol

[JustSteve]

The general rule is to bleed from the forthest point, to closest to the master cylinder... So, rear wheeel cylinders first, then claipers:
- outide/lower
-inside/lower
- top.

[maccers]

Also...I'm not sure if these work the same as other 4-pots, but I had a real problem bleeding my MS 4 pots, until I replaced the brake pads with thinner ply wood, and for some reason, they bled perfect after that. Just incase you are on your 3r'd bottle of fluid and still have a soft pedal like I was.

[Italianjoblofty]

lol ok cheers mate i'll keep that in mind. I give it another go 2day but using a gunsons eezibleed system where you connect them up to tyre pressure. It has made a big difference and alot more air come out so i think im on the rright track now. Its still not rights though so i might give the old plywood methed a go

[mini mayhem]

that plywood method sounds interesting, anybody with internal knowledge of metro 4 pots able to shed any light on the reason for this?

[03jkirk]

The thinner plywood allows the pistons to come out more allowin a better flow of fluid behind the caliper piston so the fluid doesnt just take easy route that you dont want it to