>First is the bias valve, which has already been brought up. When this >failed in my Milano, I retrofit a Spider/early GTV6 style proportioning >valve. This worked quite well & was an easy fit. That doesn't really >address your problem except to say that the bias valve is failure-prone as >I'm sure you know, & if you have an early-style proportioning valve lying >around, that might save you from having to purchase a bias valve and/or >installing a used bias valve that could just as well be faulty.
Based on input from people on these lists, I'm convinced that the problem is the Milano proportioning valve, which is plumbed in parallel to the MC. I think if we had the earlier style proportioning valve that is inline with the rear circuit, even if it failed it wouldn't cause the sinking pedal we're experiencing. I've thought about installing an earlier style proportioning valve (which is also supposed to give better rear braking), but I'm leery about introducing another variable into this equation right now. >Second is to make sure your front calipers are mounted on the correct side >of the car. A left caliper mounted on the right side or vice-versa will put >the bleed screw at the bottom of the caliper, & it will never bleed. I've >seen it happen. Now that you have Spider rear calipers, this is a >possibility on the rear as well, but you had this problem before swapping >out the rear calipers, I believe. I've seen it happen too.. ;) Ours are mounted properly. >Third, I thought I'd share my technique for bleeding brakes since many >people seem to find difficulty in bleeding the brakes in transaxle cars. We're using a combination of a five person system and a pressure bleeder. ;) Thanks All for the input. Will start with the proportioning valve this evening, then pull out the hari kari tools if that fails.. bs -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
