ever seen opaque white brake fluid?
ever seen opaque white brake fluid?
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04-08-2006, 01:43 PM
#11
Rennlist Member
Looks like it's LOADED with water to me. I would flush that system with regular fluid and then replace it a with ATE Blue for good measure. Once every two years is a good rule of thumb, it isn't that expensive to have done and if you buy a pressure bleeder (I'm going to soon) it's an hours work, even alone.
04-08-2006, 06:19 PM
#13
RL Community Team
Rennlist Member
Rennlist Member
Thread Starter
Hi guys! I thought I'd keep the suspense going at least overnight!
I learned a very valuable ($1200-1800) lesson yesterday when completing the engine installation on my C4 widebody yesterday. Keep an eye on the brake fluid reservoir when bleeding!!! I had bled the entire brake system, bled the clutch, refilled the reservoir, then went on to bleed the PDAS locks since the lines had been changed out. Well, the well ran dry! I didn't even think I bled each of the locks that long to drain the reservoir, but as I was doing the last lock, the hydraulic pump all of a sudden just quit! I looked to find the reservoir went dry, so I filled it back up, but the pump did not start back up. It made a slight humming noise like it was trying to run. Sad and depressed, I called around and found Sunset Porsche to have a nice brand new pump for $1100 shipped to my door.
But the good news is, I was talking to Ian (Hambisa on RennList) and he delivered the savings grace: "you've got to prime the pump", he said! Well, after attaching a pressure bleeder to the reservoir to force fluid to the pump, it immediately started to run. It was making horrible noise, and the resultant sludge was this white stuff. So to answer the question above, the fluid is new, but the pump was "chopping it up" so much that it came out white (or frothy, as Jason said)! It took about 1 - 1.5 quarts of brake fluid to finally get the fluid to start coming out clear. I was amazed how long it took for the pump to get rid of all the air (pump clear fluid), so it no longer "chopped up" the fluid as it pressurized the system. The white-ish fluid never made it past the accumulator - when I bled the solenoid block, and the locks, I never saw it again after the initial quart or so of fluid bled off the accumulator.
Whew! A big thank you to Ian
- I am thrilled to not be buying a part I didn't need. So lesson of the day I learned for you fellow C4 owners/mechanics: if you run the pump dry, you gotta' prime it to get it back in action!!!!
This forum is fantastic. Once again the advice of a Rennlister saved me big-time. Thanks all!
I learned a very valuable ($1200-1800) lesson yesterday when completing the engine installation on my C4 widebody yesterday. Keep an eye on the brake fluid reservoir when bleeding!!! I had bled the entire brake system, bled the clutch, refilled the reservoir, then went on to bleed the PDAS locks since the lines had been changed out. Well, the well ran dry! I didn't even think I bled each of the locks that long to drain the reservoir, but as I was doing the last lock, the hydraulic pump all of a sudden just quit! I looked to find the reservoir went dry, so I filled it back up, but the pump did not start back up. It made a slight humming noise like it was trying to run. Sad and depressed, I called around and found Sunset Porsche to have a nice brand new pump for $1100 shipped to my door.
But the good news is, I was talking to Ian (Hambisa on RennList) and he delivered the savings grace: "you've got to prime the pump", he said! Well, after attaching a pressure bleeder to the reservoir to force fluid to the pump, it immediately started to run. It was making horrible noise, and the resultant sludge was this white stuff. So to answer the question above, the fluid is new, but the pump was "chopping it up" so much that it came out white (or frothy, as Jason said)! It took about 1 - 1.5 quarts of brake fluid to finally get the fluid to start coming out clear. I was amazed how long it took for the pump to get rid of all the air (pump clear fluid), so it no longer "chopped up" the fluid as it pressurized the system. The white-ish fluid never made it past the accumulator - when I bled the solenoid block, and the locks, I never saw it again after the initial quart or so of fluid bled off the accumulator.
Whew! A big thank you to Ian
- I am thrilled to not be buying a part I didn't need. So lesson of the day I learned for you fellow C4 owners/mechanics: if you run the pump dry, you gotta' prime it to get it back in action!!!! This forum is fantastic. Once again the advice of a Rennlister saved me big-time. Thanks all!
