New O'Reilly's MC, used Brake Booster and I did ck its operation, new front calipers, and new rear wheel cylinders.
Also stainless brake lines in front and rear.
After bleeding the air out of the system the brake pedal still goes 7/8 to the floor with mininmal pedal feel.
If I push the pedal quickly I can hear like a whoosh sound. Like air though liquid.
Im out of ideas and im really trying my best not to start throwing sh**.
Im almost ready to drive it and cant evn get if off the jackstands.
89' GMC RCSB 6.0L LQ4, T56, 4.56 Gears
I guess you adjusted the rear brake shoes?
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
Yes sir
Im leaning to a crappy MC!
From the description of the whoosh sound it sounds like the brake booster is defective.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
Weird...I can only think of 3 things.
1. Are you sure you bled the brakes correctly?
2. Do you have enough fluid in the system?
3. Did you tighten the bleeder valves completely after bleeding the system?
My 3 dumb questions are in addition to Gregs question. Also, was all of this work done on a level surface? Like is your driveway at a 45* angle? Please say yes. LOL...
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
i ck'd it, i removed the vacuum line and air did come out, so I guess its holding vacuum.
Unless thats not a good way to ck
Yes, yes, and yesOriginally Posted by txarkitekt
garage is level
This trk has never been hard to bleed brakes and always gave me a firm pedal but now...
If you pump the pedal numerous times does it still go to the same place or does it get more firm and require less travel?
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
it gets a little firmer.
also I noticed when I push the pedal the rear of the MC reservoir for the front brakes bubbles will come from the bottle and go to the top.
Thats what I think is making the whoosh sound
its firmer when the trk is off than when its running
but it does get firm almsot at the end of the stroke
Bad MC.
And you made mention that you have new, solid, uncracked (so air can't get into them) brake lines?
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
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