New master cylinder, not pumping fluid while trying to bleed

need RX7 · 12-10-2010, 03:30 PM

I replaced my master cylinder today, and replaced all the bleeder screws with Russell Speed Bleeders. I topped off the master cylinder reservoir and tried pumping the brakes with the rear passenger bleeder open, nothing came out, no air or fluid. I tried opening all the bleeders and pumping away on the brake pedal, still nothing out of any of the bleeders after a few minutes. The level in the reservoir doesn't seem to be going down.

***TitaniumTT*** · 12-10-2010, 03:42 PM

Ya need to bench bleed it first.

need RX7 · 12-10-2010, 03:54 PM

Is it 100% necessary? If I sit there and pump the pedal for a long time and attempt to bleed the calipers normally, will it eventually work itself out?

djmtsu · 12-10-2010, 04:45 PM

Seriously, you need to bench bleed it.

Since it is in the car you can do it there. Remove the hardlines and have someone be the spotter for bubbles and redo it. Of course, you still have to bleed all four corners.

This is why I bought a Pressure Bleeder. Takes 5 minutes now.

Buggy · 12-10-2010, 06:17 PM

Yes, definitely bench bleed that master cylinder. You will fight with it forever and still not get the air out if you don't. Just disconnect your lines from the master cylinder and use the supplied plugs that the new one should have came with to plug the ports. Then just pump the pedal until the master cylinder begins to force fluid out past the plugs. Hook your brake lines back up and bleed them normally from there.

need RX7 · 12-10-2010, 08:42 PM

I'll bench bleed it first thing tomorrow. I just had to check to see if there was a lazy way out. I am an FC owner, after all

. Thanks for the input.

By the way, I made history today. I used one of these successfully. It actually removed my broken bleeder screw without breaking it off or mangling the remains. I was amazed, and quite relieved.

RETed · 12-10-2010, 09:51 PM

Mityvac is your friend.

-Ted

12-10-2010, 03:30 PM	#1
need RX7 Clean S4 Nutswinger Join Date: Mar 2008 Location: Sterling Heights, MI Posts: 485 Rep Power: 18	New master cylinder, not pumping fluid while trying to bleed I replaced my master cylinder today, and replaced all the bleeder screws with Russell Speed Bleeders. I topped off the master cylinder reservoir and tried pumping the brakes with the rear passenger bleeder open, nothing came out, no air or fluid. I tried opening all the bleeders and pumping away on the brake pedal, still nothing out of any of the bleeders after a few minutes. The level in the reservoir doesn't seem to be going down. __________________ -Ted -1986 Mazda RX7 Sport [DD/beater]: engine finally let go at 205k. parts car status. -1986 Mazda RX7 base [resto-mod project]: S5 n/a swap in progress.

12-10-2010, 03:42 PM	#2
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son Posts: 4,581 Rep Power: 10	Ya need to bench bleed it first. __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

12-10-2010, 03:54 PM	#3
need RX7 Clean S4 Nutswinger Join Date: Mar 2008 Location: Sterling Heights, MI Posts: 485 Rep Power: 18	Is it 100% necessary? If I sit there and pump the pedal for a long time and attempt to bleed the calipers normally, will it eventually work itself out? __________________ -Ted -1986 Mazda RX7 Sport [DD/beater]: engine finally let go at 205k. parts car status. -1986 Mazda RX7 base [resto-mod project]: S5 n/a swap in progress.

12-10-2010, 04:45 PM	#4
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 4,043 Rep Power: 22	Seriously, you need to bench bleed it. Since it is in the car you can do it there. Remove the hardlines and have someone be the spotter for bubbles and redo it. Of course, you still have to bleed all four corners. This is why I bought a Pressure Bleeder. Takes 5 minutes now. __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

12-10-2010, 06:17 PM	#5
Buggy I've been Wankeled! Join Date: Apr 2010 Location: Mildmay, Ontario, Canada Posts: 260 Rep Power: 16	Yes, definitely bench bleed that master cylinder. You will fight with it forever and still not get the air out if you don't. Just disconnect your lines from the master cylinder and use the supplied plugs that the new one should have came with to plug the ports. Then just pump the pedal until the master cylinder begins to force fluid out past the plugs. Hook your brake lines back up and bleed them normally from there. __________________ 1976 Rx-4 hardtop. Half bridge 3B 13B, S5 NA rotors, Renesis e-shaft, stat gears, and bearings, balanced rotating assembly, RE dual weber 36 DCD's 203rwhp 137ft-lbs torque DGRR 2011 3rd place 1974 Rx-4 all original 27,000 miles 1988 Rx-7 TII 320rwhp. DGRR 2012 3rd place

12-10-2010, 08:42 PM	#6
need RX7 Clean S4 Nutswinger Join Date: Mar 2008 Location: Sterling Heights, MI Posts: 485 Rep Power: 18	I'll bench bleed it first thing tomorrow. I just had to check to see if there was a lazy way out. I am an FC owner, after all . Thanks for the input. By the way, I made history today. I used one of these successfully. It actually removed my broken bleeder screw without breaking it off or mangling the remains. I was amazed, and quite relieved. __________________ -Ted -1986 Mazda RX7 Sport [DD/beater]: engine finally let go at 205k. parts car status. -1986 Mazda RX7 base [resto-mod project]: S5 n/a swap in progress.