My buddy has a 6mt coupe, he went out to his car tonight and the clutch pedal went right to the floor. Small puddle of fluid under the car. I loosened the bleeder to check and the fluid that came out of the bleeder is dark grey with silver discoloration. Still no pressure in the pedal. When we installed the new motor we replaced the clutch with a kit from z1 and the z1 hd csc kit. Anyone know what's going on? He doesn't rip on it hard and it's only been maybe 1000 miles since we installed the new motor and everything.

 

After 20 minutes of pumping and bleeding we got pressure back in the clutch and it's working fine now. Fluid was still grey though.

 

Edit: I see you have the Z1 CSC, do you know if it is adjusted correctly?

​​​​​​

 

What do you mean adjusted? We installed it with the stainless lines and checked to make sure it had pressure

 

Any time you have a gray/ silver discoloration to the brake fluid indicates that aluminum particles are entering the circuit. Likely causes are a misaligned or failing piston/ seal in the master or a bearing/ seal issue at the slave cylinders.

If clean, fresh, clear fluid goes in and gray comes out, there is metal-to-metal contact somewhere and the particulates are contaminating the fluid.

Being you replaced to a aftermarket slave, likely the issue is there.

 

Makes sense about the metal particles. Hopefully it will last through winter at least. Should've gotten the csc elimination kit instead.