hydroboost diagnosis test

darsben wrote:

westend wrote:
Sounds to me like you have air in the brake lines. Have you ever had the brake system bled?

or
Brake Fluid Contamination

Over time, brake fluid will absorb moisture and this can also cause spongy pedal problems. Water can get into the system through the rubber brake lines. It will lower the boiling point of the fluid so that, under heavy braking, the heat forms bubbles of gas in the fluid itself. This gas is compressible (whereas brake fluid is not); hence the spongy feel in the brakes.

Brake fluid needs to be changed every so often. It was news to me when m mechanic told me but he was right. MAKES A Difference

Thanks for the info.The fluid does seem to look pretty dark.Those two items will be on my top list bleed all for corners and change the fluid.Do you know on the hydrobooster when you change the brake fluid do you have to change the power steering fluid also?I know the two work together.I hope not because i here their is a special technique for bleeding the power steering system and im not sure if most techs is gonna know this.