ok as most of you guys know i have a 91 toyota with a 302 well i finally got all the brake lines ran and bled the master cylinder and all the lines i have no air but i have no pedal still also does it matter if the power booster vacuum is hooked up cause i haven't hooked that up to the 302 and i was wondering if it would be that any help would be much appreciated as this truck is just about road worthy

 

did you bench bleed the m/c?

if there is no air in the system it should work. the booster doesn't matter, without it connected the pedal would just be harder to push.

 

Ya i did and i checked the wheel cylinders and they were good

 

Yes the booster has to have vacuum on it!

 

well hooked up the power booster and made no difference so i guess ill try a new m/c since the truck has been sitting so long maybe it went bad i don't know it's driving me nuts

 

So will have the new m/ c on this weekend hopefully that will fix the problem but i dont know i did get to drive it in the garage though and lets say this truck is gonna fly

 

i'm excited for you josh!

as i said earlier the booster has no effect on the hydraulic system of the brakes. i can't figure out why it's such a hard concept for people to understand lol. it only assists to make the pedal easier to push.

 

so put the new m/c on and no difference but did notice the pass rear wheel was locked up went to pull drum off and brakes were stuck so after cracking the drum and all the hardware braking and ripping the wheel cylinder i ordered all new pieces won't be able to work on it till next weekend hopefully this will fix it other wise next thing will be getting a new booster calipers brake pads pretty much replace the whole damn brake system.

 

so have any of you guys had a problem like this? do you think its the power booster too?

 

Google testing the power booster,it is easy & then @ lest you'll know if it good or bad.

 

i don't think ill be able to do that test since my pedal goes to the floor anyways.

 

Has to be air in line or a leak,(no fluid ) in master ,lines ,wheel cylinders!!!
Pedal pressure should be a little & a lot with all good!!!

 

Kraze,
The booster isnt the problem... The booster only makes pushing the brakes easier and since your peddal goes to the floor its not the booster. I am not there but, you are certain there isnt a leak at any point, correct? The new M/C didn't change anything? And I am confused, you primed the M/C before installation? Start with the basic troubleshooting and go from there, this doesn't make sense to me... When you bleed the brakes, do you use the peddal and bleed at each S/C? If so, does it push fuid? I have had this sort of issue with an old celica years ago and it was air in one of the lines. I ended up using a hand vacumm pump system to bleed the brakes and it eventually pulled the air bubbles in the lines...

good luck and let us know what you find!

cheers!