1974 C20 still have brake problem
 

Never got my brakes fixed, I bench bleed my MC again, and leveled the truck and did it on the truck too. Back brakes bleed out great and stiff but the front brakes stll have lots of air, not sure why. I have bleed them manually by pushing the brake pedal and used a speedy bleed but lots of air keeps coming out even spurts large bubbles. When I go to fill the reservori small bubbles rise out of the front brake reservoir only(the one for the front brakes is what I mean). while the truck is off the pedal is great but when I start the truck pedal goes straight to the floor and does not come back up. What am I doing wrong, I have been through two quarts of brake fluid bleeding and it has not gotten any better. the brake light does not come on and I have tightened every fitting for the front brakes. Any help out there?

Re: 1974 C20 still have brake problem
 

found a leak problem solved

Re: 1974 C20 still have brake problem
 

Cool... Good to hear.
Where was the leak at?
Almost time to get it out on the street and drive it like you ...
:cool:

Re: 1974 C20 still have brake problem
 

It was at the passanger side where the steel line meets the rubber hose. Not sure how that happened.

Re: 1974 C20 still have brake problem
 

Sometimes the smallest things causes the biggest headaches... eh.
It probably stops 'almost' as good as it goes. :cool:

Re: 1974 C20 still have brake problem
 

You may have a air leak at the place where the rubber line connects to the frame. There are copper washers at the fitting to seal the connection
You might try using new copper washers there Or even double washer it there. I know I had a dickens of a time trying to seal my fittings there.