My 1983 ford rangers brakes go to the floor

[Thefordguy83]

Hi my name is trever and im new on here i have a 1983 ford ranger with the 2.0 4 cylinder engine and im wondering whats causing the brakes to go to the floor while im trying to bleed them. Ive replaced pretty much the entire brake system including brake booster,master cylinder,etc but when i turn the engine on the brake pressure goes away im thinking it might be something with the vacuum lines as i dont honestly know whats actually connected to what(thats how it was bought idk what the previous owner did) i cant seem to find a vacuum diagram of what lines go where but was also wondering what exactly can i just remove as most of it is just for emmissions and recirculating fuel vapors which i dont care bout none of that since im not gunna be using it anyways. Any help would be appreciated.

 

[alwaysFlOoReD]

Most likely you haven't bled it enough. There is a bench bleeding procedure for the master that really helps. I've also had good luck with vacuum bleeding the system. If you search the site using the Google bar at the top right you will get better results than the native search.

 

[Shran]

^ I agree with what he said... additionally... the only important vacuum piece tied to the brakes is that big rubber hose that is attached to the booster. Just about everything else is emissions control equipment and a lot of it can be removed if you don't have to pass smog inspections.

 

[Bird76Mojo]

Looks to me like there's clearly a good size crack in your vacuum hose in this photo:

Right next to the check-valve

 

[Dirtman]

How the heak did you spot that.

 

[Bird76Mojo]

My middle name ain't Bird for nuthin.. Ol' Eagle Eye....

I'm always spotting broken shit on people's vehicles that they never knew about. People hate me for it, but I've probably saved more than one life because of it over the years.

 

[Thefordguy83]

Yea i knew it was there i went ahead and trimmed it back past the crack and i noticed that one of the ports where the brake booster hose goes into wasnt covered and im thinking that may be where the vacuum leak is coming from

 

[Dirtman]

Although the leak is a problem, its not THE problem. Lack of vacuum to the booster causes a stiff pedal, not soft. You still have air in the system that needs to be bled.