Soft brake pedal only with engine running

themechanic

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I only had one leak in this all new system. BTW, converted from 4 wheels manual drums. The new prop valve leaked at one brake line connection. Tightened and sealed it. Filled the MC after bleeding brakes and no more fluid loss anywhere.

I may just have to remove the power booster and MC and put a 15/16" manual MC on it.
 

desotoshane

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I see you didn't mention what booster you have I read to many post this morning. What booster do you have?
 

themechanic

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I have the same booster and have the same problem. Is yours a oem or reproduction?

I see you didn't mention what booster you have I read to many post this morning. What booster do you have?
I have the reproduction double diaphragm booster sold by Pirate Jack and many others.
 

desotoshane

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I also have the pirate jack booster and have the same problem. Although this weekend I swapped it out for a oem remanufactured booster and still have the same problem so it's not the booster. I did notice something else I'm going to try this weekend.
 
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