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Resolution to these brake issues Posted by Notnoel [Email] (#23) [Profile/Gallery] (more from Notnoel) on Tue, 20 Aug 2019 06:49:34 In Reply to: Re: When replacing the master cylinder (MC), bench bleed it first, Notnoel [Profile/Gallery] , Tue, 13 Aug 2019 07:14:45 Members do not see ads below this line. - Help Keep This Site Online - Signup |
So to close the loop on this, I had replaced the master cylinder and bled a quart of DOT4 through the system and it was still mushy when I got the recommendation to bench bleed the master (bought the kit off Amazon for $8) and had planned to go that route. However, car sat for a week before I could get to it and I periodically went out to the garage and pumped the pedal when running. Gradually, it began to get a bit better.
Therefore, last weekend I decided to see if I could avoid the mess and hassle of the bench bleed, suspecting that I was accomplishing a lot of the same thing through a week of steady pumping. Last Saturday, I repeatedly bled the brakes all the way around (using Bentley's suggested order)with my new Motive power bleeder (highly recommended). Eventually, I put another 1.5 to 2 quarts of DOT4 through it and the pedal held. I am guessing that had I bench bled them initially, this would not have been needed (went around the circuit 4 times before all of the air was expelled.
So, bonus points for the folks who told me to just keep bleeding, and to Walt's advice on bench bleeding (although I didn't go that route, the advice was spot on). I've never had such issues before (dropped a new TRW master in 1.5 years ago and it was a breeze), but I will certainly do a bench bleed on all of my cars again in the future.
Thanks to every one that piped in.
->Posting last edited on Tue, 27 Aug 2019 06:51:31.
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