Notices
1999 - 2003 7.3L Power Stroke Diesel  
Sponsored by:
Sponsored by: DP Tuner

spongy breaks/need pumping

Thread Tools
 
Search this Thread
 
Old Jul 12, 2010 | 11:43 AM
  #1  
luvemhot's Avatar
luvemhot
Thread Starter
|
More Turbo
15 Year Member
Joined: Dec 2005
Posts: 669
Likes: 0
From: Idaho City Idaho
spongy breaks/need pumping

I replaced the inner axel seals when I was done my breaks are spongy now. I did nothing to introduce air into the system. I have no leaking of any fluid. My reservoir is not low.
I need to pump the break peddle one time to the feel as before.
With the engine running and the truck stopped if I push hard on the break peddle it will fall to the floor and jump back up at me.
Would this be a master cylinder or the power steering/ break pump?
If ether of these how do I check to make sure?
Thanks for your help
 
Reply
Old Jul 12, 2010 | 12:40 PM
  #2  
Izzy351's Avatar
Izzy351
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Could be master cylinder. When's the last time you flushed out the brake lines?
 
Reply
Old Jul 12, 2010 | 01:12 PM
  #3  
luvemhot's Avatar
luvemhot
Thread Starter
|
More Turbo
15 Year Member
Joined: Dec 2005
Posts: 669
Likes: 0
From: Idaho City Idaho
Haven't ever do that
 
Reply
Old Jul 12, 2010 | 01:17 PM
  #4  
bobbyrjw's Avatar
bobbyrjw
Tuned
20 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Jan 2004
Posts: 419
Likes: 1
From: Jamestown, TN
Club FTE Silver Member

Mine started doing that right before the rear brake line ruptured. Apparently, it is a known issue (known to me now) that the rear brake line rubs the frame and eventually blows. Mine were getting spongy and then blew out the rear line.

The weak point is behind the fuel tank. I see that you have done the Hutch mods. Did you look at your lines when you had the tank out?
 
Reply
Old Jul 12, 2010 | 01:20 PM
  #5  
luvemhot's Avatar
luvemhot
Thread Starter
|
More Turbo
15 Year Member
Joined: Dec 2005
Posts: 669
Likes: 0
From: Idaho City Idaho
Bobby can you see it without pulling the tank? I have already done those mods dont want to pull the tank if I dont have to
 
Reply
Old Jul 12, 2010 | 02:17 PM
  #6  
bobbyrjw's Avatar
bobbyrjw
Tuned
20 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Jan 2004
Posts: 419
Likes: 1
From: Jamestown, TN
Club FTE Silver Member

If you had a mirror on a flexible shaft, you may be able to see it. The problem is that it is in the "U" of the frame behind the fuel tank (of course the "U" is pointing toward the tank).

I yanked it out when I was replacing it. I did my Hutch/Harpoon last weekend and saw where it rubbed. I adjusted the replacement lines to not be touching anything and zip tied them a little tighter.

(going to sound geeky here) I am watching for a cheap USB video camera to hook into my laptop. I am going to use a flexible shaft to attach the camera for "remote" inspections. I don't know if it will ever help me. In a situation where you are trying to see something in an impossible location, it may come in handy.

Sorry that I couldn't help any more than this. It is just in a place that is impossible to see.

I have been telling folks to check it during their Hutch/Harpoon to help them out, but it is a little late to help you.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Deepseadiver
Brakes, Steering, Suspension, Tires, & Wheels
1
May 7, 2014 10:24 AM
tommyt
Brakes, Steering, Suspension, Tires, & Wheels
1
Aug 15, 2012 09:48 AM
luvemhot
1999 - 2003 7.3L Power Stroke Diesel
2
Mar 11, 2011 03:41 PM
quiacato
1999 - 2003 7.3L Power Stroke Diesel
3
Feb 28, 2011 08:52 PM
little dutch
1987 - 1996 F150 & Larger F-Series Trucks
3
Jan 21, 2010 02:47 PM




All times are GMT -5. The time now is 03:37 PM.

story-0
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-1
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-2
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-3
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-4
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-5
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-6
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-7
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-8
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-9
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE