Hello there,
I'd agree - a wooden pedal and weak braking usually means the booster's not working. There are a couple of traditional diagnostic tests you see in all the car manuals, which I've found to work well in practice... One is to start and run the car for a few moments to build up the vacuum, then pump the pedal a few times to get the feel of it; then switch off, and resume pumping: if the booster had been working, you'll feel the pedal slowly harden up as the vacuum is depleted with each pump. (This test can be done in the garage but is even better done with the car rolling, slowly and carefully, on a deserted stretch of straight road.) (Careful not to lock your steering if you switch off while rolling!) The other test is definitely a non-moving test - simply hold your foot pressing down on the pedal while you start the car, and you should feel the booster start sucking the pedal down under your foot and towards the floor as the engine comes to life. You could try both of these tests on your good car (the Spider) to get the idea of how they feel when all's working as it should. I wonder if your total brake system refurbishment included this booster too? If not, then that must be the prime suspect all right. Best regards, Graham Hilder, NZ (1750 GTV with standing pedals and in-line booster, plus Alfasud & 156 with normal brake systems!) >Gentle Alfisti, > I have replaced with new every component on my 66GT braking system. Unlike my other booster-enhanced Alfa brakes, this car's middle pedal is, for a lack of a better word, wooden. The pedal has no feel and is not really progressive in it's stopping power. It feels like the booster isn't contributing anything to the hydraulic circuit. I've checked for vacuum leaks and everything seems tight. Maybe it's just that the return spring is weak. These brakes are woefully lacking compared to my Spica spider. > Any words of advice, Digest? How does one conduct an op-check on a booster? Thanks one and all. > modelle ----------------------------------------------------------------------------- --- The information contained in this email message is for the attention of the intended recipient only and is not necessarily the official view or communication of the Department of the Prime Minister and Cabinet. If you are not the intended recipient you must not disclose, copy or distribute this message or the information in it. If you have received this message in error, please destroy the email and notify the sender immediately. protection is active. http://www.avast.com -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
