Homer Posted November 19, 2008 Share Posted November 19, 2008 The entire system was empty (including the ABS unit) so need to do a full bleed of the system. I've already bled the master cylinder and tried to use the normal method of just bleeding at the calipers, but the brakes hardly work. It's been said on here that the ABS system can be a 'mare to get air out of but I'm not sure how to go about it and previous threads are a little inconclusive. So can anyone clarify how to fully bleed the system? Here's what I've got so far.. 1) Bleed master cylinder 2) Bleed ABS system (how?) 3) Bleed at each caliper in order Quote Link to comment Share on other sites More sharing options...
bignum Posted November 19, 2008 Share Posted November 19, 2008 Hi darrel, have you tried with the engine running, if so could be a dodgy master cylinder. Quote Link to comment Share on other sites More sharing options...
Homer Posted November 19, 2008 Author Share Posted November 19, 2008 Hi darrel, have you tried with the engine running, if so could be a dodgy master cylinder. No, the engine wasn't running when I tried to bleed the system last time. Do I need the engine running to bleed the ABS? This was one of the inconclusive subjects in previous threads here Thanks Si, any advice is welcome! Quote Link to comment Share on other sites More sharing options...
Scott Posted November 19, 2008 Share Posted November 19, 2008 No, the engine wasn't running when I tried to bleed the system last time. Do I need the engine running to bleed the ABS? This was one of the inconclusive subjects in previous threads here Thanks Si, any advice is welcome! With ABS it doesn't work till the engine is running so i would guess you would need to bleed with the engine on. Can't be sure, just my way of thinking. Quote Link to comment Share on other sites More sharing options...
patrikbrunt Posted November 19, 2008 Share Posted November 19, 2008 (edited) I had a similar problem on my old astra (with abs), wasnt a whole system bleed... just one caliper... but I found without the engine running it wasnt bleeding properly. once I tried again with it running it worked fine though Edited November 20, 2008 by patrikbrunt (see edit history) Quote Link to comment Share on other sites More sharing options...
Homer Posted November 19, 2008 Author Share Posted November 19, 2008 Thanks gents. So I just run the engine and then bleed the brakes in the same way you'd do normally? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted November 19, 2008 Share Posted November 19, 2008 Id use a pressure bleed kit to do the ABS pump personally. Normal calipers the engine running is fine but you'll need more oomph/fluid to do the ABS. It contains a resevoir internally and you'll need to get the air out of that Quote Link to comment Share on other sites More sharing options...
DannoSupra Posted November 19, 2008 Share Posted November 19, 2008 ^ Yeah That ^ Pressure Bleeding is the Future! We didnt have one in the workshop at one point, BUT what a difference. Isnt there a way to get the ABS to pump fluid to all 4 Corners and just a case of cracking open the nipples, in effect doing the same job as a Pressure Bleeder, i know some car's do it, but you need the Diagnostic to DataLog/Activate the ABS System Quote Link to comment Share on other sites More sharing options...
edge Posted November 20, 2008 Share Posted November 20, 2008 As said above pressure bleeding is alot better and makes a difference in feel. Is the car safe to drive? Could take to a garage and get it done and shouldnt cost much either. Quote Link to comment Share on other sites More sharing options...
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