Jivey1350

I have a 1988 pickup 4x4 5sp with 22re. Truck has been a project from day one. New fuel pump, and starter. Got it running and now the break pedal goes to the floor check fluid and it's good so we bleed the breaks, all is good. Pedal never seems to get stiff but does get better. Crank the truck and nothing. So what's next? Booster or master?

2ToyGuy

When you bled the brakes, did you bleed the LSPV, too? Sometimes, it's a real good idea to disconnect the bar that goes down to the axle, and move it up and down through it's entire throw while bleeding it, to try and break loose any of the crud and corruption that tends to build up in the LSPV.
A lot of people forget the LSPV even exists, but some air in it, or it's lines, can really have an effect on the whole system.

To be sure you're getting an accurate feel of the brake pedal, you should have the engine running when you try it out. The booster needs to have the vacuum applied to it to do it's job at all. There's a check valve in the vacuum line to the booster. Is it allowing vacuum to the booster properly?

Could there still be air in the MC? Could the o-rings on the piston have gotten damaged, and are allowing fluid to just go past the piston without developing pressure in the system?

Jut the few ideas that popped into my pea brain...
Pat☺

Jivey1350

I will try that thanks for the information