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10-07-2010, 10:29 PM
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#1 |
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Registered User
Join Date: Oct 2005
Location: Florence, AL (NW Alabama)
Posts: 309
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Brake problems
I have a cousin that has a 72 GMC truck. He's having problems with his brakes. We bled the brakes and got a good pedal, but when we cranked it, the pedal goes to the floor. What causes this?
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1990 Chevy Silverado (My DD) 1978 Chevy Bonanza LWB (My LWB to SWB 1 day project) 2015 Hyundai Sonata (Wife's DD) |
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10-07-2010, 11:06 PM
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#2 |
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Active Member
 
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Brake problems
Get a new master cylinder. The mc piston seal goes bad or splits allowing fluid to go past it and that lets the pedal go down.
They're not that expensive and should solve your problem. If it's been replaced recently, take it back and get a replacement. Be aware that new ones can also fail so keep the receipts. |
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10-07-2010, 11:33 PM
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#3 |
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Registered User
Join Date: Jan 2010
Location: Elgin Mn
Posts: 112
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Re: Brake problems
Rebleed you brakes if it still doesn't help see above post. Make sure you "bench bleed " the MC as it saves alot of agony.
__________________
In the beginning of a change, the patriot is a scarce man, brave hated and scorned. When his cause succeeds however, the timid join him , for then it costs nothing to be a patriot. I am a revolutionary...so my son can be a farmer...so his son can be a poet. If there must be trouble, let it be in my day, so my child may have peace... 72 short step w/ 388 /4l80e/ and 3.08 gears. |
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