Q&A

Well my pedal goes straight to the floor, braking is completely gone and there has been some leaking underneath the car for a while now. I never could figure out where the leak came from, but now I have a feeling it has to do with the booster/MC?

The booster CAN NOT cause the pedal to go to the floor!! Mast. cyl. can, as well as a leak elsewhere. Find leak and repair, or have it done!
Have some trouble with brk. lines leaking under the car about center back, behind plastic cover.

Oh really? Well I had the MC replaced and the brakes bleed and it still goes to the floor, do you have any tips on how I could go about finding the leak or what other part the leak could be associated with? The car dealer place wanted $800 to fix the booster because they couldn't find any other issue...I don't necessarily trust them that much though. Thank you again!

Still loosing fluid? After mast, cyl. install did you have brakes for a while?

After replacing the MC I still did not have any brakes, but before I replaced the MC I had the brakes bled and they worked for a little while until they went back down to the floor again.

did you bench bleed the mc before you put it on?

Get a MECHANIC to FIX the brakes, stop fooling around and wasting money, for your safety and others.
Got to have good brakes!

Actually I had the mechanic put the MC on himself, I didnt mess with any of that. I want to get it fixed but I don't want to waste money if the brake booster isn't actually the real issue with the brakes.

No, you did not have a MECHANIC do any work on the brakes! If so they would be fixed. Like i told you before the booster aint the problem!! Been doing this for 38 years so I know what I am telling you is right!! You have already wasted your money!
There is still air in the system, it needs to be bleed out, by someone who knows how,to get the pedal up. Then fix any other problems!
Well got to run so i will go jump in my 1994 Corolla and be off.
Good luck with yours.