Bleeding brake and clutch lines

General Elite, Eclat and Excel discussions.

Moderator: Board Moderators

Post Reply
User avatar
DavidOliver
Senior Poster
Posts: 750
Joined: Fri Nov 07, 2014 11:18
Model: Excel
Colour: Calypso Red
Year: 1985
Location: Majadahonda Madrid Spain

Bleeding brake and clutch lines

Post by DavidOliver »

I have recently been bleeding brake lines. Being used to a two man job, pedal pusher and bleed screw operator, and now being a lone operator, my wife is not a Lotus fan and less when she is asked to sit in the driver seat, I got hold of a pressure bottle type. This can provide some interesting puddles of wasted fluid around the engine bay and loss of large quantities of expensive brake fluid.
I then discovered the suction equipments and found I can still get air bubbles in the clear plastic bleed line even with the nipple closed. Air leaking in around the pipe/nipple connection-

I ask Forum Members for their preferred method for fluid bleeding.
How does a car manufacturer bleed brakes on a new car?

Dave the cog.

User avatar
Phantasm
Senior Poster
Posts: 647
Joined: Tue Dec 08, 2015 21:16
Model: Excel SE
Colour: Silk Red
Year: 1992
Location: Jacksonville, FL, USA
Contact:

Re: Bleeding brake and clutch lines

Post by Phantasm »

Here is a method...
https://youtu.be/ag-Q_lP0dOk
-Bill
1991-92ish Lotus Excel SE Silk Red
2009 Jeep Wrangler X Unlimited 4X4
2015.5 Volvo V60 T5
Previous: 2005 Toyota Prius, 2002 Nissan Maxima SE 6 speed, 1988 Toyota 4Runner, 1989 Toyota 4Runner, 1995 Dodge Neon, 1986 Ford Mustang

User avatar
Alan_M
Senior Poster
Posts: 1411
Joined: Sat Aug 12, 2017 01:17
Model: Excel SE, Excel SA, Elan SE
Colour: Red, red, white
Location: South Wales

Re: Bleeding brake and clutch lines

Post by Alan_M »

Being another lone worker, I use a Sealey pressure bleeder. I originally bought this as my daily driver could only be bled with a pressure bleeding system.

You should not be getting any pools of fluid in the engine bay if all seals are good.

When I initially connected it to my Excel and pressure tested ( without fluid in the bleeder, as per instructions) I had a leak between the reservoir and the master cylinder. This was due to the rubber washer nearest the bulk head being a poor seal - a bit old and tired I suspect. I removed the reservoir cleaned everything up and added an additional rubber washer between top of master cylinder and base of reservoir. This gave an air and fluid tight seal.

Pete Boole
Senior Poster
Posts: 4003
Joined: Tue Apr 04, 2006 21:28
Model: Elite
Colour: Monaco White
Year: 1974
Location: Nottingham

Re: Bleeding brake and clutch lines

Post by Pete Boole »

I'm another user of pressure bleeders - I've been using the same Gunson's "Easibleed" for about 20 yrs - used it dozens of times. You do have to get the seals right though!

Pete

Online
User avatar
Lotus-e-Clan
Senior Poster
Posts: 4567
Joined: Thu Nov 30, 2006 13:25
Model: Excel SE - EWP/Waterless!
Colour: Not Blue or Green
Year: 1989
Location: Swaledale

Re: Bleeding brake and clutch lines

Post by Lotus-e-Clan »

I've used Gunsons easy bleed but prefer to use a simple clear well-fitted hose with a non-return valve with the end dipped into a jar of fluid. This way I do the pumping - making sure I let the pedal return very slowly on the last stroke. Then I only nip the bleed screw IF the clear hose show no sign of bubbles. Works for me anyway - you need a good non-return valve and you should only open the nipple the minimum to get flow.
Peter K

User avatar
bash
Senior Poster
Posts: 2396
Joined: Thu Nov 03, 2005 15:34
Model: Se, V8
Colour: white
Year: 1986
Location: Doncaster
Contact:

Re: Bleeding brake and clutch lines

Post by bash »

I use a gunsuns easybleed but beware of the cap, I had one blow off and shower the car with brake fluid luckily I got it all off in time before any damage. I now put tie wraps over the cap as a safety measure but it works fine.

Bash
Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.

User avatar
MrCoolA
Senior Poster
Posts: 2728
Joined: Sat Sep 26, 2009 15:33
Model: Lotus Excel SE
Colour: Pacific Blue
Year: 1989
Location: gateshead

Re: Bleeding brake and clutch lines

Post by MrCoolA »

Pressure bleeder every time. Changed and upgraded all my brakes and never had any issue with it. Just take your time.
Last edited by MrCoolA on Tue Jun 12, 2018 18:05, edited 1 time in total.
Previously Jerry (Taylor)
Now "Black Flag"


Lotus Excel SEI1989 253.6hp 190lbft
Lotus Elise S3 1.6. Motorsport Green 2011.

tonypoll
Senior Poster
Posts: 835
Joined: Sun Nov 13, 2005 19:27
Model: Excel SE
Colour: BRG
Year: 1992
Location: Hampshire/Surrey/Berkshire

Re: Bleeding brake and clutch lines

Post by tonypoll »

I too use Gunsuns Easybleed. Works just fine - if you get the cap on tight!

Post Reply