Out of Ideas (World's Longest Brake Job) (Page 3/5) Dave Deerson MAR 24, 10:01 AM I didn't every thread here but two things.... Did you 1. Check to make sure the master cylinder returns to its internal stop after being pushed?(take master off, push in and listen for positive clunk/click of the piston hitting the C-clip/stop) and 2. Did you measure the push rod length in relation to the mounting surface to be sure the piston is not being pushed slightly. It sounds like the piston is not coming back all the way and the "compensation port" is not getting uncovered so fluid is not allowed to refill the piston after a pedal stroke. Filben MAR 24, 01:20 PM quote Originally posted by Dave Deerson: I didn't every thread here but two things.... Did you 1. Check to make sure the master cylinder returns to its internal stop after being pushed?(take master off, push in and listen for positive clunk/click of the piston hitting the C-clip/stop) and 2. Did you measure the push rod length in relation to the mounting surface to be sure the piston is not being pushed slightly. It sounds like the piston is not coming back all the way and the "compensation port" is not getting uncovered so fluid is not allowed to refill the piston after a pedal stroke. Also this! Patrick MAR 24, 01:58 PM quote Originally posted by Filben: Your procedure is wrong. You should start at the farthest caliper from the MC (passenger rear, then driver rear, passenger front, driver front). It MUST be bleed in that order. Sorry, but your procedure is wrong. With a Fiero, due to the way the brakes lines are run, the driver's side rear caliper is the furthest from the MC. Filben MAR 24, 03:06 PM quote Originally posted by Patrick: Sorry, but your procedure is wrong. With a Fiero, due to the way the brakes lines are run, the driver's side rear caliper is the furthest from the MC. Ah... good to know! Doggo MAR 25, 01:24 PM quote Originally posted by Dave Deerson: 2. Did you measure the push rod length in relation to the mounting surface to be sure the piston is not being pushed slightly One thing I did NOT do was measure the pushrod length on the remanned booster before installing. Well, that’s not entirely accurate. We TRIED to measure it with the little H shaped tool but it wasn’t compatible with the size of either the master or the booster (don’t remember which). Now, to make myself look like a fool… when we couldn’t measure the pushrod length, my buddy (who keep in mind is a ASE certified tech) said “it’s probably fine” and we continued the installation. I trusted him because he’s done all kinds of stuff to his own car and like I said, literally went to school to become a mechanic. I had totally forgot about this little bit of information… needless to say the very next thing I will be doing is properly measuring the pushrod length. Doggo MAR 27, 08:15 PM I thought this was funny. Check out the amount of brake fluid I've run through my car over the course of this job: I'm now Prestone's favorite customer! Doggo MAR 31, 09:32 PM UPDATE the pushrod length was fine. I’ve managed to source another proportioning valve (thanks Carter for the hookup) so we’ll see where that goes. Will keep you posted. cartercarbaficionado MAR 31, 10:35 PM quote Originally posted by Doggo: UPDATE the pushrod length was fine. I’ve managed to source another proportioning valve (thanks Carter for the hookup) so we’ll see where that goes. Will keep you posted. always welcome bro. just remember hes got alot of hoods and such and some indy parts stashed. if you want the other seat youll have to ask me lol. i love that dude Doggo APR 16, 06:09 PM Soooo… the “new” proportioning valve has not fixed my issue. So we’re back to the basic question: why would fluid not be reaching the front calipers? Consistently that is. It should have everything it needs, new hoses, new calipers, clear lines, new bench bled mc, pushrod isn’t too long, clear prop. valve. It just won’t push it! cartercarbaficionado APR 16, 06:18 PM quote Originally posted by Doggo: Soooo… the “new” proportioning valve has not fixed my issue. So we’re back to the basic question: why would fluid not be reaching the front calipers? Consistently that is. It should have everything it needs, new hoses, new calipers, clear lines, new bench bled mc, pushrod isn’t too long, clear prop. valve. It just won’t push it! thats really weird. i guess try the old hoses? does fluid reach the hard line side of the rubber hose fine?