'Bleeding Brakes" literally

15 posts / 0 new
Last post
stuart147
Offline
Last seen: 2 years 2 months ago
Joined: 17/04/2014
'Bleeding Brakes" literally

I have been trying all afternoon to bleed the brakes on my Caterham all afternoon.

I have had some work done on the front end that meant that the front calipers had to be removed. They are Hi-Spec 4 pot calipers and were new last winter. I have also had new front brake hoses made and these are fitted. While I had the car on axle stands, I took out the rear brake pads to check them and clean and grease the sliders.

Today, I thought I would try to bleed them. I have bled them at least 4 times this afternoon using over a litre of new brake fluid. I started with the nearside rear then offside rear followed by nearside front and lastly, offside front.

I have done them each time until no bubbles are present, but when I press the pedal, there is nothing there. The pedal goes straight to the floor.

If it helps with answers, I am using an "Eazi Bleed" system.

I have also done both inner and outer bleed nipples on the front calipers.

Stuart

SM25T
SM25T's picture
Online
Last seen: 1 min 46 sec ago
Joined: 17/04/2014
Did you effectively drain the system by removing bits ? Sounds like you must have a lot of air in there. Stupid question .... are the bleed nipples on the top after the front calipers were refitted ?
CharlesElliott
CharlesElliott's picture
Offline
Last seen: 1 week 4 days ago
Joined: 17/04/2014

Bleed using the pedal and not Eazibleed. It's not always very easy and I've had the same problem before using one.

stuart147
Offline
Last seen: 2 years 2 months ago
Joined: 17/04/2014

Hi Ian

You have me wondering now. Bleed nipples are very definetely on the bottom. Would it be possible for me to have put the calipers on the wrong sides? (Not the most technically aspired person).

Hi Charles. Using pedal method not an option earlier today, but could be tomorrow.

Stuart

SM25T
SM25T's picture
Online
Last seen: 1 min 46 sec ago
Joined: 17/04/2014
That's your problem. Air goes upwards. You are a plonker.
SM25T
SM25T's picture
Online
Last seen: 1 min 46 sec ago
Joined: 17/04/2014
Swap sides. Ezibleed will be OK.
dan4182uk
dan4182uk's picture
Offline
Last seen: 1 year 6 months ago
Joined: 04/02/2015

Use the gravity bleeding method - it takes a while but I've never known it fail.

Just undo a bleed nipple and let it drip through a bleed pipe into a jar. Keep checking the master cylinder to make sure it doesn't drop too low and let air in. Do 1 corner at a time in the correct sequence.

Probably takes 10 - 20 mins a corner, hence pro mechanics don't do it, but it's fool proof. You can also busy yourself with other stuff whilst it's at it, just keep checking the master cylinder level.

CharlesElliott
CharlesElliott's picture
Offline
Last seen: 1 week 4 days ago
Joined: 17/04/2014

Still don't like Eazibleeds even if the calipers are on the correct sides. 

stuart147
Offline
Last seen: 2 years 2 months ago
Joined: 17/04/2014

Hi Ian.

OOPS. I did say that I was not the most technically gifted Caterham owner.

Will swap them tomorrow.

I may use the gravity method and spend the 20 mins per side reading the build manual.

Stuart

SM25T
SM25T's picture
Online
Last seen: 1 min 46 sec ago
Joined: 17/04/2014
Back to your polishing ..... you are an expert at that !
stuart147
Offline
Last seen: 2 years 2 months ago
Joined: 17/04/2014

Rotate