Suspension TECH Including Brakes, Wheels and tires

          
 
 
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Old 04-24-2020, 09:40 PM
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2nd67GTO 2nd67GTO is offline
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Join Date: Mar 2006
Location: Central Oregon
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Default Hydra Boost help needed!

Quick run down, 1967 GTO all new brake parts, wilwood discs all 4 corners, 6 piston front, 4 piston rear, CPP Show Stopper hydra boost, their master and proportioning valve. March style track pulley system, type 2 PS Pump that came with kit.
System has been working perfect for months with minimal driving (<40 miles) but lots of starting, stopping and moving the vehicle. Again, has been perfect.
Took it to the alignment shop today for the initial alignment. Afterwards I have no brake pedal. Every 8th or 9th stop I’ll get a firm pedal. Went through the outlined Hydra Boost bleeding procedure again with no change. I watched the alignment being done and the tech used a rod to hold the pedal down while rotating the steering wheel to check caster etc. My guess is I got an air bubble in the accumulator. I have no whine, pulsing or indication of a slipping belt. Fluid level in the PS and brake system are still topped of with no micro bubbles in the PS fluid. The pedal will not pump up like there is air in the brake system. There are brakes at the very bottom. The PS reservoir is the PSC canister in the pic.

Pic included for reference.
Help?
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