Hello, i just bought a d100 with a six in a row, and the front passanger rubber break hose was cracked so it failed inspection. I just replaced the hose, but now the pedal will hit the floor with poor stopping power, if i pump the breaks a couple times, then ill stop ok.. do i need to bleed the front break, if so how do i do this? any other suggestions? the year of the truck is 84, if that helps with front disc.

thankyou

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84 D100, stock 225, 1bbl, with a glass pack!

ahhh! you need to stop driving it and bleed all 4 brakes properly.

http://www.popularmechanics.com/automot ... 13448.html

ditto what jester said

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Nothing beats a slant six
1987 D150

If you bleed the brakes correctly and the pedal still isn't firm, don't overlook the possibility that the MC has failed. I've seen that happen often when a MC travels much more than it has in many years.

I presume any of the seals travel through a (corroded?) region they haven't seen for a long time and it damages the seals. For that reason, I usually just replace or rebuild everything in the system (with the possibility of the hard lines) if there's any question at all about its condition. I find it saves time, money, and effort in the long run to just do it all at once and I've never regretted it.

Beware of Chinese-made copper washers that don't seal well because they're too thin.