DIY Clutch Delay Valve (CDV) Removal

[6mtsoup]

But no one has accepted my challenge yet which will prove if the CDV actually slows the release of the clutch and causes, lets call it micro slipping.

something tells me ‘clutch DELAY valve’ has something to do with DELAYING the flow of the clutch fluid, which ya know, slows down the release of the clutch. But who am I to argue against engineers who’s job is to come up with those things

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[Turbro]

Stop engaging the troll. He's been dead on this hill for like a year now. The corpse has rotted and the bones are sun bleached. There's nothing left to his argument.

But i love getting responses that have nothing to do with the CDV on bmws lol

 

[spaghettihoes]

Stop engaging the troll. He's been dead on this hill for like a year now. The corpse has rotted and the bones are sun bleached. There's nothing left to his argument.

I blame Maniac for calling him out, he was pretty quiet on here recently.

 

[lucky phil]

I blame Maniac for calling him out, he was pretty quiet on here recently.

Yep thats what did it

 

[maniac]

lol I don’t have a problem with it on.
In other news…… how loud is the bloody eventuri!

 

[1_slo_Z4]

I just did this ran through a whole bottle and the clutch pedal went to the floor when I went to go test it

 

[6mtsoup]

I just did this ran through a whole bottle and the clutch pedal went to the floor when I went to go test it

Homie you fucked up

 

[1_slo_Z4]

Homie you fucked up

Maaaaan I'm so fucking confused right now so after that I was like fuck it dealer closed I'll mess with it this week. Dropped the car covered and sealed everything up and the pedal was back just drove it around for an hour with no issues car feels amazing but I am in shock on what the hell happened

 

[6mtsoup]

Maaaaan I'm so fucking confused right now so after that I was like fuck it dealer closed I'll mess with it this week. Dropped the car covered and sealed everything up and the pedal was back just drove it around for an hour with no issues car feels amazing but I am in shock on what the hell happened

Did you not clamp the line? How much fluid came out when you did it and did you properly bleed it?
We clammed the line and maybe 3 drops a fluid came out and didn’t need to bleed it on the 3 cars we did

 

[Spart]

Maaaaan I'm so fucking confused right now so after that I was like fuck it dealer closed I'll mess with it this week. Dropped the car covered and sealed everything up and the pedal was back just drove it around for an hour with no issues car feels amazing but I am in shock on what the hell happened

Get a power bleeder and like four quarts of fluid. Motive MVP-0109 power bleeder and BMW 81220142156 low viscosity DOT-4.

Make absolutely sure that you do not let the reservoir run dry while you are bleeding at the slave cylinder.

Bleed, work the pedal, bleed, work the pedal. Until no more bubbles come out. Use a bottle with a clear tube to observe the bubbles, this one works great and has a magnet: https://www.amazon.com/Longacre-52-45198-Bleeder-Bottle-Magnet/dp/B08DL79FJ8/

The dealer might make things worse, to be honest with you.

 

[Pizza]

While we're on the subject, does anyone know where I could get a replacement bleeder screw for the slave cylinder?

I rounded it off while doing my CDV delete and had to finish the job with channel locks to tighten it back up. Not looking forward to the next time I have to bleed.

 

[Spart]

While we're on the subject, does anyone know where I could get a replacement bleeder screw for the slave cylinder?

I rounded it off while doing my CDV delete and had to finish the job with channel locks to tighten it back up. Not looking forward to the next time I have to bleed.

I don't know the answer (other than buying a new slave cylinder) but you may want to use a flare nut wrench next time and back off the juice. ?

 

[RyanA90]

Did you not clamp the line? How much fluid came out when you did it and did you properly bleed it?
We clammed the line and maybe 3 drops a fluid came out and didn’t need to bleed it on the 3 cars we did

So as long as you clamp the line, you don't need to bleed the line?!

 

[AHP]

When I did mine I clamped the line, but not well enough, so it dripped for 10 or so seconds until I could get it sorted. Topped off the reservoir and proceeded to bleed seemingly without issue. Put everything back to together and stepped on the clutch pedal and it went straight to the floor and had to be pulled back up. Seems we let the fluid level get below the "Min" line which is just above the hose that feeds the clutch slave cylinder. If the fluid drops below that and you press the pedal it will suck air, stick to the floor and will have to be re-bled. It took several cycles of pressing the pedal and picking it up by hand to eventually regain pressure.

Make sure the reservoir stays topped up!

 

[6mtsoup]

So as long as you clamp the line, you don't need to bleed the line?!

We clamped it right at the end with vice grips before disconnecting and only lost a few drips at most. The first car we did we used the bleeder and it didn’t even do anything, and when we did mine after we didn’t use the bleeder and everything was fine

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