noslen1968

I was poking around the motor just now and found this unattached line. It goes down and back and disappears near the headers and seemingly goes into the firewall - maybe. I can't see where it would connect but it seems solidly connected at the other unknown end.

There is a similar line to it connected to the bottom of the brake booster via a hard line. Both have black dots running along their sides and both seem to disappear to the same area in the firewall. Replaced vacuum line that wasn't removed? The other one seems to have a more 'hard' connection vs this nipple and also has a gold-colored canister which I suspect is a one-way valve while this unattached one is plain all the visible way back.

Is it a service line? Should it be capped off?

Gordonm

That looks like a bleeder screw. I have one on my Hyd master cylinder for the LS style throw out bearing. Where does the other end go

noslen1968

It disappears down low in the firewall. So this may be an addition which makes a one-man, no lift clutch-bleed possible? Makes sense, thanks.

It runs, brakes and clutches fine.

Sigforty

Definitely looks like a clutch remote bleeder. I have one on my C5 as well. As for the other line, I am not sure what it may be. You should post a picture of it in the C5 section.

AzMotorhead

Remote bleeder for your throwout bearing and the other that is attached to the gold canister is probably the supply line, gold canister being the resevoir.