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6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis

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Old Mar 3, 2016 | 04:04 PM
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SRSherrill75
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Brake Issues

Changed the oil and fuel filters in an 08 F250 today, after I got done had no brake pressure (fluid reservoir was still full), just wondering if anyone else has ever run into this??? Trying to figure out what is up with it.
 
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Old Mar 4, 2016 | 12:29 AM
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Is the pedal hard or does it squish easily the whole way down?
 
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Old Mar 4, 2016 | 08:10 AM
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It's squishy, like there is no boost. Also, opened up the brake fluid reservoir and it looked like it was filled with transmission fluid? I know I use tranny fluid as power steering fluid but didn't think you could use it as brake fluid. I think it may have a hole in a brake line but not sure, any ideas?
 
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Old Mar 4, 2016 | 08:20 AM
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Tranny fluid does not belong in the master cylinder. I've never heard of that before.
 
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Old Mar 4, 2016 | 05:01 PM
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Yeeeaaaaah after doing a little further research, I don't know what idiot put that in there, it will ruin the master cylinder. I guess I was just the lucky guy who got it in when it decided to go out....luckily the customer was someone I have been dealing with for a long time and didn't blame me for it.
 
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Old Mar 4, 2016 | 07:11 PM
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Brake Issues

Ah yes. It does something strange to the seals in the brake system. I tried that once when I was in a pinch with my 83 Ranger. It was very low so I thought ATF can't hurt...boy was I wrong! Drove home with pretty near no clutch.

On edit...I added ATF to the clutch system which is designed to use brake fluid. Sorry for making myself so clear!
 
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Old Mar 4, 2016 | 07:44 PM
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Sounds kinda like the deal here on the 150s

https://www.ford-trucks.com/articles...brake-failure/
 
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