Brake bleeding

[ntfrendlyGR]

Recently deleted cdv. I’ve bled plenty of of clutches in my other cars with this cheap vac pump. It pressurizes but when I open the bleeder, I never get straight fluid. And now the pedal just goes to the floor and stays there. There’s no leaks as it holding pressure. Any idea ideas? I’ve tried searching, but can’t find much info.

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[J29DB03]

Correct cap for the reservoir?

 

[ntfrendlyGR]

Yes, it’s pressurized and holding at 20. I’ve cracked the bleeder and just keep pumping and holding it at 10 psi and it’s pretty much just air going through and out bleeder but the reservoir isn’t dropping fluid, which it initially dropped an 1/8”, and is completely full not making much sense. The pedal just goes to the floor and stays here

 

[ntfrendlyGR]

Pretty much doing this over and over with the same results

 

[ntfrendlyGR]

I’ve even tried the old-school way and sat there and pumped it 50 million times it won’t build any pressure

 

[tracer bullet]

There's a CDV thread, if you search for it you'll find some folks have had this and what they did about it. Actually here it is: https://www.supramkv.com/threads/diy-clutch-delay-valve-cdv-removal.18268/page-14#post-444244

You might look and be 100% sure the reservoir is full enough, just in case something dumb happened. Maybe even take off the little filter basket and look inside, be sure the level's above wherever the fluid physically goes into.

I can't see why the pressure bleeder wouldn't work but you could maybe remove it and do it the old fashioned way, fill the reservoir and keep an eye on it (bonus if you have someone who can help). Pump the pedal manually. Have the line coming off it go upwards for a ways so it kind of "fills" itself and doesn't let air go in backwards after doing so.

I think one person used an oversized syringe and went backwards with it. I'd typically say that may flush stuff the wrong direction but that's probably more a concern with a 10 year old car.

 

[ntfrendlyGR]

Yes, it’s pressurized and holding at 20. I’ve cracked the bleeder and just keep pumping and holding it at 10 psi and it’s pretty much just air going through and out bleeder but the reservoir isn’t dropping fluid, which it initially dropped an 1/8”, and is completely full not making much sense. The pedal just goes to the floor and stays here

 

[ntfrendlyGR]

So I figured it out my particular bleeder doesn’t fill with fluid and push it through it just pressurize it with air. The brake fluid literally needs to be filled to the top of the reservoir not the minimum line doing that worked perfectly. there must be a divider in the reservoir, separating the brake from the transmission. Only thing I can think of.

 

[tracer bullet]

So I figured it out my particular bleeder doesn’t fill with fluid and push it through it just pressurize it with air.

You probably don't have it set up correctly. Needs a tube going down inside to get the brake fluid out. And to be clear it is filled with fluid, right? Because... maybe it's too opaque to see inside of but I don't see a line showing the fluid level.

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