'70 PB booster issue [Archive] - Chevelle Tech

: '70 PB booster issue


Tom Mobley
Feb 6th, 07, 1:31 AM
Hi, All

My Chevelle was on stands in my garage for a couple years with I was occupied by real life events. When I got it down and started driving it I noticed the pedal was high and hard. I don't recall there being any problems with it before. Is there anything that happens to them if they sit? Doesn't seem to be any vacuum issues. The other night I had to get on the brakes hard on an off-ramp, and it felt like I pushing on a rock. I had both feet on it.

the car has OEM style disk/drum setup, I stole the whole front disk setup off a 72. It's been on there since '89 with no issues. The rear is a fresh 12-bolt with fresh brakes.

Chris R
Feb 6th, 07, 3:51 AM
So its been sitting for years and the pedal is very hard to push? Might not hurt to grab a partner and bleed the system to see if there is even any significant flow out the bleeders. Kind of sounds like something could be plugged likely because of sediment. Brake fluid draws moisture over time. Moisture brings rust and debris as well as seals drying out.

Tom Mobley
Feb 7th, 07, 12:35 PM
thanks Chris. I can try that.