« previous next »
Pages: [1]   Go Down

Author Topic: 83 c-10, brakes spongy  (Read 4385 times)

Offline knockretard

  • New Users
  • Posts: 1
83 c-10, brakes spongy
« on: May 28, 2009, 04:59:29 pm »
Hey everyone, I have a problem. First let me give you the details. It's a 83 c-10, long-bed. It has a 305 and 700r4. I purchased the truck with a spongy brake pedal. I have since replaced both front calipers and brake pads. I can't find any leaks with the system. I bleed the heck out of the thing and it fill get firm for maybe 3 pumps and thing "leak down". Also the truck has front disc brakes, but no power brakes.

Maybe someone jas had this problem before?? Any suggestions would be great.Thanks in advance.
Logged

Offline ccz145a

  • Senior Member
  • ****
  • Posts: 1393
Re: 83 c-10, brakes spongy
« Reply #1 on: May 28, 2009, 05:59:56 pm »
Check the rear cylinders for leakage then check the master then the flex hoses front and rear.
« Last Edit: May 28, 2009, 06:02:11 pm by ccz145a »
Logged
1975 C10 Silverado LWB, 454CID, TH400, 10bolt 3.42
11MPG Downhill w/tailwind (but there ain't no hills here)

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 19174
Re: 83 c-10, brakes spongy
« Reply #2 on: May 28, 2009, 06:40:23 pm »
Also check the adjustment of the rear brakes. If it's creeping down which is what you are describing over spongy I would replace the master cylinder. While you're at it a power brake conversion would be a good idea.
Logged
,                           ___ 
                         /  _ _ _\_
              ⌠¯¯¯¯¯'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline FathomX

  • New Users
  • Posts: 1
Re: 83 c-10, brakes spongy
« Reply #3 on: July 23, 2009, 02:01:14 pm »
Would also suggest a vacuum test..


Logged

Offline Irish_Alley

  • Tim
  • Senior Member
  • ****
  • Posts: 13333
  • Family is not an important thing. It's everything.
Re: 83 c-10, brakes spongy
« Reply #4 on: July 25, 2009, 12:20:28 am »
i would say brake lines when they go bad they will swell up under pressure and cause spongy breaks
Logged
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes
Pages: [1]   Go Up
« previous next »