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85 k5 blazer break/steering problems HELP

D

dadof5

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Joined
Sep 18, 2007
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Location
alabama
Ive got an 85 k5 with a 6.2l diesel that we are restoring/fixing up for my boys and now there is a serious break/steering issue. When you break it hard the pedel goes to a certain point then will bleed all the way to the floor without applying more pressure to the breaks and of course the steering goes away since its a connected system. I have replaced the steering pump, steering gear, master cylinder, and hydro boost, now Im lost.

This really bites since its what is keeps it off the road and we've worked tail off on it. Has a custom cut wetlands 3m graphics pattern over white body, custom alluminum roof rack with ladder way up the side, hand made front and rear 10 guage 2x6 steel bumpers that wrap the body and attach to frame(pitty the person that hits this thing), interior was gutted and replaced with a black leather set from a 2004 rt durango with complete seating for 7, flip down lcd screen and built in gps not to mention all leather dashand side pannels, alpine sopund system with memphis and boston speakers drivin by two memphis amps. Bullet proof 6.2l diesel with700r4 trany built the right way running rancho suspension all the way around. I really want this fixed it will be an awsome 1st car for my boys.
Thanks Dadof5
 
air in system

negative, this thing has been bled so much it needs a red cross sticker
 
Check the wheel cylinders for wetness? Look at every inch of the plumbing front to back for wetness? Certain the brakelines are on the calipers good with good brass washers?

I had a simular prob not long ago. Brakes were great but every once in awhile when I would cycle the suspension the peddle would go to the floor. Have to pump it twice to get it back. Turned out to be a leaking calliper/brake line connection.
 
thanks, Ill put it up on some blocks and give the once over really good
 
pump modification

the pump mod was to simple, yes you have to do both parts for it to work I used a #4 washer but ground it slightly to reduce its thickness. I also have a Diesel so the steering pump supplies pressure to the hydrobost system for the breaks as well as steering gear. With oversize tires and steering stabilizer the standard reman just didnt have the punch required for the load now, steady as a rock. Ive got another chevy diesel Im going ahead and doing the same thing even tho there isnt an issue yet. Even under a load the gear is effortless with no whine.
 
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