Larry 43 Posted August 20, 2012 Share Posted August 20, 2012 It appears that my 86 Comanche has developed a leak between the master cyl. and the vacuum booster. Question is ...which is bad. I'm assuming its the Master cyl. as I have had to add brake fluid periodically, should I replace both. Brake pedal is hard and requires substantial pressure. I haven't had the vehicle very long and I'm not sure how it should feel. So it could be that both are bad. Any advice is welcome. (1986 Custom, 2.8 V-6, auto) Link to comment Share on other sites More sharing options...
HOrnbrod Posted August 20, 2012 Share Posted August 20, 2012 Any visible leaks? I'd say it's a good time to do the dual diaphragm brake upgrade. :cheers: Link to comment Share on other sites More sharing options...
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