Toyota Repair: 88 toyota 4-runner, vacuum lines, toyota 4 runner

Question
I have an 88 toyota 4-runner, 22re with a slight miss at idle and under load (while driving) and I noticed if I pump the brakes repeatedly in starts to stumble extremely bad. It can also be slow to start if the engine is warm. I think this may be 2 separate issues. I have looked for any loose, burnt or broken wires or vacuum lines throughout with nothing obvious...

Answer
There may be a problem with the brake booster or the hose coming from the intake to the booster, if the hose is ok, block it off somehow and see if pumping the brakes has the same effect, if so the brake booster has an internal leak, please keep in mind that braking will be extremely reduced with the booster disconnected.