"""A little progres
I disconected that idle control valve, mechanical, and get a little better brakes. The brakes are moore instantley but when you apply the pedal at the first braking point but when you brake a second time the effects are weaker.""""
I had this problem a few years ago. It turned out to be a defective seal between the master and the booster. It would work at the beginning and then there was little braking after I depressed the brake pedal the second time. I bought a vacuum reservoir and never mounted it because I found the defective seal. It too thought it was lack of vacuum but it didnt make sense because it had worked well for years.
Will
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