[GFS] Power Brakes
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[GFS] Power Brakes



Guys,
 
I've got an issue with the power brakes on my 58.  When first applied, they work fine.  After a number of stops, the boost is gone and I'm back to manual brakes.  I understand that I still have full brake operation, but I really have to stand on the pedal to stop.
 
I put a vacuum gauge on the tank.  Under no-load idle It registers about 6 in of vacuum.  Bringing the engine up to about 1500 rpm, the vacuum remains constant.  Is this normal?  Seems low to me.
 
When I measure the vacuum at the vacuum advance line going into the distributor, it's zero at idle, and rapidly advances to about 15 inches at about1200-1500 rpm, which I believe is normal.
 
Any thoughts?
 
Art Linden




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