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Old 05-13-2011, 08:07 PM
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brake pedel slowly go's to the floor

my freind has a 95 f250 7.3 diesel he said the master cyl was bad so we change it,well i did he sat there eating and drinking with his wife she likes wine she a wine-o, with the master cly change the brake pedal still go's down slow to the floor it will stop the truck but once it hit's the floor it start's to move all the air is out of the line's but still go's to the floor has anyone had this kind of PITA,,,,thanks,,,,keith
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Old 05-13-2011, 08:31 PM
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I assume that you are not loosing the brake fluid?
If new master cylinder does that, it wasn't bleed properly, or is defective.
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Old 05-13-2011, 08:39 PM
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Sometimes new master cylinders need to be "bench bled" due to the angle when first installed. Otherwise its got a leak somewhere. I am betting its a rear wheel cylinder or a pin hole in a rear brake line..........
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Old 05-13-2011, 09:42 PM
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yep we check the wheel cly and bench bled it 2 times also, he just got the truck like this with the bad brakes it's got them anti-lock brakes
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Old 05-14-2011, 11:11 AM
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I had the same thing with my '94 F250/7.3 turbo. I changed master cyl, proportioning valve etc. Never lost any fluid so no external leakage. Never did resolve the problem.
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Old 05-15-2011, 11:03 AM
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Quote:
Originally Posted by the last f-100 View Post
my freind has a 95 f250 7.3 diesel he said the master cyl was bad so we change it,well i did he sat there eating and drinking with his wife she likes wine she a wine-o, with the master cly change the brake pedal still go's down slow to the floor it will stop the truck but once it hit's the floor it start's to move all the air is out of the line's but still go's to the floor has anyone had this kind of PITA,,,,thanks,,,,keith
Constructive criticism...a few periods would sure help in reading your post. No offense meant, only want to help..
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Old 05-15-2011, 01:47 PM
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Tell him to forget fixing the brakes and just let his wino wife drive it. He can get rid of two problems at once!!



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Old 05-15-2011, 02:18 PM
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Bad vacuum booster?

Jim
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Old 05-15-2011, 02:18 PM
 
 
 
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