Bad Power Brake Booster?

[Hikin Mike]

If the booster rod is missing the adj tip (if it had an adj one) this won't engage the MC as you know. If it was gone you never should a had brake engagement and the tip should be somewhere...maybe where you separated the booster from the MC. Who knows could be laying down in the engine bay. There's a critical adj gap btw the booster rod and MC and if it's a factory unit you can look up the spec's, mine being a conversion though, requires a .20 gap. Mopar I think has a larger gap and also think might vary by system mfg. There's also a pedal ratio factor btw power and manual brakes that influences pedal height. If this is an untouched factory setup (well sounds like possibly not) that shouldn't be a factor. The pedal should set around 1.5" or so higher than the gas pedal normally. If it's way high then the rod attaching to the booster rod thru the firewall could be checked...I had to shorten mine due to excessive height; but again I have a power disk brake conversion from manual brakes. A tip could be fabricated by the correct size/thread bolt and grinding down the bolt end to mate the radius on the MC piston and add a jam nut for locking it in place as an interim measure until finding a correct tip. This would be something I'd do to see if this solves the problem...

Going to look into fabricating a tip and see if this helps.

I don't have any factory books, so I have no idea what the correct adjustment gap is.