Help needed

Cobain03

Active Member

Aug 27, 2003

996

0

36

Lexington, Ky

Feb 6, 2006

#1

• Feb 6, 2006

• #1

i recently got done instlaling my new engine and took her for a test drive. i went to stop, and the pedal goes almost to the floor. i've been told that this is a vacuum problem because of the bigger then stock cam. whats the fix?

 

iskwezm

10 Year Member

May 24, 2005

4,159

20

79

Rowland Heights,California

Feb 6, 2006

#2

• Feb 6, 2006

• #2

your cam isnt that big, is the vac hose hooked up???Fluid???leak????

 

BDT 1967

Member

Jan 31, 2006

91

0

6

Wichita KS

Feb 6, 2006

#3

• Feb 6, 2006

• #3

Ya for sure your cams cant be that big. I would think a leak, or something along that line.

 

NasaGT

Founding Member

Sep 19, 2002

1,993

2

49

Virginia

Feb 6, 2006

#4

• Feb 6, 2006

• #4

Leak? Air in the lines?

Does the pedal pressure come up if you pump the pedal?

 

Cobain03

Active Member

Aug 27, 2003

996

0

36

Lexington, Ky

Feb 6, 2006

#5

• Feb 6, 2006

• #5

how many lines are there? the fluid level is good. should i try pumping the brakes for a lil bit to get everything back in sync?

 

geostang351

Member

Mar 30, 2005

946

0

17

Danb., CT

Feb 6, 2006

#6

• Feb 6, 2006

• #6

I had the same problem. I bled the brakes and it helped. Amazing how corroded the fluid gets in 5 yrs.!

 

68keyblr

20+ Year Stangneter

Mar 17, 2003

946

20

49

Arizona

Feb 6, 2006

#7

• Feb 6, 2006

• #7

I had a similar problem only to find out that the adjustment cable had slipped off one of the rear drum brakes

 

69Rcode_Mach1

Active Member

Apr 20, 2004

1,473

1

37

Salt Lake City, Utah

Feb 7, 2006

#8

• Feb 7, 2006

• #8

I would try bleeding those brakes first, that should help. Then check to make sure the pushrod is hooked properly to the pedal, and not just dangling in place from the boot.

 

Cobain03

Active Member

Aug 27, 2003

996

0

36

Lexington, Ky

Feb 7, 2006

#9

• Feb 7, 2006

• #9

i should add, that if the front wheels are jacke din the air, they are totally free flowing. no friction from the brakes.

 

iskwezm

10 Year Member

May 24, 2005

4,159

20

79

Rowland Heights,California

Feb 7, 2006

#10

• Feb 7, 2006

• #10

Cobain03 said:

i should add, that if the front wheels are jacke din the air, they are totally free flowing. no friction from the brakes.

Click to expand...

thats not a bad thing if you drag racing........ , but i would bleed the system and adjust the brakes all around

 

Dark Knight

Founding Member

Feb 1, 2000

2,578

0

0

Chandler, Az.

Feb 8, 2006

#11

• Feb 8, 2006

• #11

Sounds like a bad master cylinder.. 'specially if they're full of fluid and you havent touched anything else.. check the wheel cylinders too, just in case..

The lack of vacum would make it harder to stop because you wouldnt have the power assist...

 

latamud

Founding Member

Oct 22, 2002

791

2

19

Tampa, FL

Feb 8, 2006

#12

• Feb 8, 2006

• #12

I agree with bleeding the brakes. You can't go wrong there. But you just swapped engines, and they worked before? It sounds like a vacuum leak.

 

Cobain03

Active Member

Aug 27, 2003

996

0

36

Lexington, Ky

Feb 8, 2006

#13

• Feb 8, 2006

• #13

we got around to adjusting the brakes, and found that the driver rear had brake fluid leaking out of it. so im guessing a new wheel cylinder will be the fix.

 

Edbert

Founding Member

Jul 13, 2002

3,548

32

109

Austin TX

Feb 8, 2006

#14

• Feb 8, 2006

• #14

Bleeding the brakes at the wheels wont help if there is air in the MC, try a bench bleed of it too while you are at it.