 Brake Issue, Soft or no brake pedal pressure |
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| dralf |
 Sep 27 2017, 02:38 PM
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#1
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Member  Group: Members Posts: 230 Joined: 24-January 04 From: Dayton, Oh Member No.: 1,597  |
It was a warm day in Ohio yesterday and I took my 1975 with 125,000 miles 914 out for a ride. As I stepped on the brake the pedal went to the floor and after a few pumps the brakes took hold. I slowly drove home wondering what was up. Eight years ago replaced all the brake lines but not the master cylinder. Last night I quickly inspected all the calipers and the fluid reservoir. All seemed OK, The brakes now feel spongy. Am I correct in my assessment that I need to replace the master cylinder, or is there something else I should take into consideration. I doubt that it is air in the line for that would contribute to sponginess, but not cause the pedal to go all the way to the floor without stopping the car.
Thanks in advance for any advice |
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| porschetub |
Sep 27 2017, 03:15 PM
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#2
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Advanced Member Group: Members Posts: 4,754 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Certainly sounds like the master cylinder may have failed,have you checked around the pedal for leaks ?
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| mepstein |
Sep 27 2017, 03:18 PM
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#3
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914-6 GT in waiting Group: Members Posts: 19,649 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region 
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Exactly what my master cylinder did before it completely failed
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| steuspeed |
Sep 27 2017, 06:03 PM
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#4
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Senior Member Group: Members Posts: 1,008 Joined: 12-July 11 From: Portland, Oregon Member No.: 13,308 Region Association: Pacific Northwest |
Yup. Master cylinder. The stock Ate 17mm can be bought at Pelican Parts. Make sure you bench bleed before you install. I did not, and it required a pressure bleeder to get the air out.
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