stuart Posted February 22, 2021 Report Share Posted February 22, 2021 What fluid are you using? Stuart. Quote Link to post Share on other sites
Tim T Posted February 22, 2021 Author Report Share Posted February 22, 2021 Automec silicon. Used it in the 3a because it was there when I bought it and it has been fine, so went down the same route. Cheers Tim Quote Link to post Share on other sites
stuart Posted February 22, 2021 Report Share Posted February 22, 2021 14 minutes ago, Tim T said: Automec silicon. Used it in the 3a because it was there when I bought it and it has been fine, so went down the same route. Cheers Tim Hate to say this but in your case that maybe the problem (awaits everyone who uses it jumping in saying that it wont be the problem) It maybe the seals that have been used just arent compatible. You do know you have to be really careful and slow when bleeding silicon as it bubbles very easily and takes quite a while for them to disperse. Stuart. Quote Link to post Share on other sites
Steves_TR6 Posted February 22, 2021 Report Share Posted February 22, 2021 I like Automec and have used it for years, but Stuart is right that bubbles do stay in the fluid for longer. Automec IS also a little more compressible than quality dot4 so the pedal travel will be a little longer. i have had good results bleeding with a gunsons eazibleed, having poured the Automec slowly and let it settle. additionally leaving the system pressurised overnight, stick wedging the brake pedal down, does help good luck! steve Quote Link to post Share on other sites
DaveN Posted February 23, 2021 Report Share Posted February 23, 2021 Er..... do you have new pads fitted? Quote Link to post Share on other sites
Tim T Posted February 23, 2021 Author Report Share Posted February 23, 2021 Yes. Hope I don’t regret asking this but why? Tim Quote Link to post Share on other sites
stuart Posted February 23, 2021 Report Share Posted February 23, 2021 29 minutes ago, Tim T said: Yes. Hope I don’t regret asking this but why? Tim I`d like to know too, shouldnt make any difference to spongy brakes. Stuart. Quote Link to post Share on other sites
Steves_TR6 Posted February 23, 2021 Report Share Posted February 23, 2021 Hmmm, new pad faces not alligned with the disk surface/ grooves in the disk ?? Quote Link to post Share on other sites
DaveN Posted February 23, 2021 Report Share Posted February 23, 2021 They will be spongy until bedded in properly! Quote Link to post Share on other sites
stuart Posted February 23, 2021 Report Share Posted February 23, 2021 6 minutes ago, DaveN said: They will be spongy until bedded in properly! They shouldnt be. Stuart. Quote Link to post Share on other sites
Tim T Posted February 23, 2021 Author Report Share Posted February 23, 2021 Perhaps I should say that rather than spongy they don’t work! With car off the ground and foot on the brake the brakes prevent the wheels from turning but there is no way they would stop the car if driven on the road. Everything within the braking system is either new or reconditioned. Have sent the MC for retesting. Am going through all the unions yet again! Will have one more go with SBF with gravity bleed and pressurised pedal overnight and keep fingers crossed. If that fails then will revert to Dot4.... perhaps! Cheers, Tim Quote Link to post Share on other sites
DaveN Posted February 24, 2021 Report Share Posted February 24, 2021 15 hours ago, stuart said: They shouldnt be. Stuart. Funnily enough I’ve just replaced the rear pads, discs and callipers on my daily hack..., a Golf, and couldn’t get a decent feel to the pedal even after repeated pressure bleeding ( golfs can be a pain to bleed properly). Left it a few days and the pedal feel is back to normal after bedding them in properly. Can tell now the discs have an even shine. Quote Link to post Share on other sites
Tim T Posted February 24, 2021 Author Report Share Posted February 24, 2021 Whilst the MC is away being tested is there any benefit in “priming” the pipes with a very slow gravity feed or will I introduce sufficient air when finally connecting the MC as to negate any theoretical benefit? Tim Quote Link to post Share on other sites
ntc Posted February 24, 2021 Report Share Posted February 24, 2021 No point out of interest did you shim the callipers after fitting new disc’s so they are inline Quote Link to post Share on other sites
Tim T Posted February 24, 2021 Author Report Share Posted February 24, 2021 I did. Am pinning my hopes on gravity feed and time!!! Tim Quote Link to post Share on other sites
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