Is it a possibility that you have a duff new master cylinder, I had a very similar problem on my little triumph spitfire, the symptoms where exacatlly the same as you describe but the master cylinder on a spitfire is about the size of a walnut. The pedal neaded pumping half the time or it didn't break at all. Somone once told me 'just because it's a new component don't rule it our as the cause of the problem' Wise words. James RG UK --- In DMCForum@xxxxxxxxxxxxxxx, "Walter Coe" <Whalt@xxxx> wrote: > I just replaced the master cylinder on Jim Sleeth's car, and > it don't work. Jim bought a rebuilt master cylinder from > NAPA. We bench bled it, connected the lines, bled the > calipers in the proper order, etc. Everything looks normal, > no fluid leaking anywhere. If we let the system sit for > more than 15 seconds and then step on the pedal, it almost > goes to the floor. With about 3 more pumps, it firms up > properly and stays firm for as long as we continue to pump > it. But if we let it sit for more than 15 seconds then the > pedal goes soft again. Apparently we just got a bad > cylinder from NAPA. The original cylinder was leaking, so > that was the reason for getting into it................... > > Walt _____ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/DMCForum/ * To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx <mailto:DMCForum-unsubscribe@xxxxxxxxxxxxxxx?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .