Okay so i just put on a rear disc conversion from teraflex and bled everything and my pedal was spongy. So then i went and purchased a zj proportioning valve with a disc brake setup. And it is still spongy. All my lines are brand new and there are noo leaks anywhere whhhaata could it be im really frustrated at this point

 

did you bleed from the furthest line to the closest?
rear passenger, rear driver, front passenger, front driver.

 

Yes

 

under powered single stage factory booster upgrade to dual one did mine with factory brakes amazing difference .

 

And where might i find this fancy contraption lol

 

you dont, bc you have a 2000 and already have the larger booster. bleed it again, check for leaks.

 

ooppps me bad missed the year completly

 

was pedal hard b4 upgrade?

 

Yes the pedal was fine with the drum brakes

 

Was the master cylinder fluid maintained at above the "add" level when you were bleeding the brakes?
With the fluid level getting too low at the master cylinder may cause air to get into the master cylinder.
If you did, you might have to bench bled the master cylinder.

 

It got a little below add when i did bleed them how would i bench bleed the master??

 

This would give you an idea.

 

Great link!

 

Well i bench bled my master like shown and the pedal is still horrible

 

Wish i can be of more help.
Here's a bump....least i can do.