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I have a 1969 Camaro Z28, I've gone thru 6 master cylinders and when everything is said and done, I start up car and pedal goes to floor no brakes, I've also changed out to new wheel cylinders, new calipers, new brake lines, master cylinders are either re-man or new, doesn't make any difference, none have worked so far, do you know what my problem could be?
Re: I have a 1969 Camaro Z28, I've gone thru 6 master...
Power brake booster more likely.check engine vacuum you need at least 15 hgs vacuum before power brakes will work.if you have high lift camshaft that will cause low engine vacuum no power brakes.
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Hi Eddie:
Let's see what we can do to try to figure this out. First, tell me about the brakes. Disc front? Drum back? All drum?
If there are drums, the shoes have to be manually adjusted with the little threaded spreader bar. Discs self adjust.
When you're bleeding the brakes, keep lots of fluid in the master cylinder reservoir, and start with the front wheel nearest the master cylinder, then the other front, then the drivers side rear, then the other one. The idea is to try to avoid getting any air trapped in a line. Once you.ve done it right, the brake pedal should have a firm STOP when applied.
If the pedal continues to go to the floor, I'd be concerned about the master cylinder.
Hope this helps
clutch pedals are suposed to go all the way to the floor , you sure you dont mean brake pedal (cus thats bad ! ) clutches should travel all the way to floor and release the "grab" of the engine about 2/3 down , this way they are more smoothly allowing shifting thru the gears and not jerking as you shift thru the gears , if clutch pedal does not start to "grab" the engines power by 2/3 off the floor and fully "grab"its power all the way up(slipping) ,and you have a hydraulic clutch (96's do) then the clutch disk may require replacement or there is a oil leak in the clutch/master/slave cylinder , look for small oil leaks from under car in area of foot pedals
clutches should be replaced as an assembly that includes , disk ,pressure plate, throwout bearing , with engine side clutch plate magnafluxed for heat cracks and any hydraulic oil leaks replaced or repaired
you have someone helping you right? cuz you cant do it yourself, and the brakes need to be pumped only enough to get a solid midway stop of pedal travel, and with the brake still depressed by your assistant, you open the bleeder a bit until the pedal goes to the floor, you tighten bleeder, they then release brake pedal and pump it up again, rinse, repeat, until there is no spongy feel in brake pedal
You've done major work and now you'll need to completely bleed air out of the system, to get the fluid to go all the way through. You may also need to adjust the rear brake shoes.
First, bleed the Master cylinder to get fluid through it. This should have been done before installation. Loosen the lines at the M. Cylinder and fill up the reservior with brake fluid. Pump the brake pedal slowly with the cover on the M. Cylinder to prevent fluid from splashing out. Once you've got fluid coming through the M.Cylinder, tighten the brake lines at the M. Cylinder.
Bleeding the brakes is a 2 person operation. You always bleed the brake the farthest from the master cylinder, then the next, the next, and finally the drivers front brake which is the closest to the M. Cylinder.
If you are unfamiliar with this process, you need to remember that you can't let the brake fluid get low in the M. Cylinder, or you have to start all over when air gets back into the lines.
When one person pumps the brakes, after several pumps hold the pedal down as far as it will go and keep pressing to the floor as the other person loosens the bleeder valve. Don't let off of the pedal before tightening the bleeder valve. Then repeat until all of the air is gone. Teamwork and communication. Both of my wives were able to assist me in bleeding brakes.
You will have to add fluid and repeat this process until you have a firm pedal.
One man bleeder valves work if used properly, but who tells you what is happening at the other end while you're pressing the pedal?
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