Got a '99' 1500 w/5.2. Been losing a lot of brake fluid about a quart a month.Can't find the leak.Checked the lines,slave cylinders,calipers,master cylinder everything...Now the truck is billowing white smoke and missing a little.Coolant and oil good no mixing and not low.Is it possible the brake fluid is leaking at the master cylinder and being drawn into the intake by the vacum line.
Thanks

 

sounds about right, first unhook the line from the manifold and look for traces of fluid, if fluid is found replace the MC and probably the booster too

 

Sounds like a direction to go..Wasn't thinking about replacing the boostrer but probably would be better...
Thanks

 

brake fluid will do a number on the bladder in there.....

 

how are the brakes themselves working?

 

The brakes are working normal.But I have never really liked them since I bought it new.Takes way to much pressure to stop...

 

It sounds for all the world you like have a blown master cylinder though. That is the only way you could get fluid thru the booster, into the intake manifold. Have you checked that hose? Find anything interesting?

If you do find evidence of fluid in that hose, swap the master, AND the booster. I suspect your brakes will work better for ya.

 

Pulled the master cyl off booster was completely full of fluid..Ha Ha ....
Swapped them out less smoke but afraid I have more going on.Code reader shows misfire on #5 gonna have to dig deeper.
But after Christmas..
Merry Christmas
Thanks for the help...