1992 Honda Prelude: I replaxed the external clutch slave cylinder, bit could not bleed it because my clutch would not compress, it had no tension at all. Im at loss on how to get my clutch to compress now so i can bleed the slave cylinder.

indicates that there is air in the system
constant movement of the clutch is removing the air but after leaving for for a period , air is again getting back in the system
Possible loose connection at the slave cylinder/bleed nipple or faulty slave cylinder

you need to bleed it some more. Don't forget you have a master and a slave. The slave is the pain. My shortcut to bleeding it is to loosen the bleeder screw and compress the plunger. Make sure you got plenty of fluid close the screw and release the plunger. Then bleed normally. Also make sure your master and slave cylinders are working properly

If there is no bleed port, you have to bleed it before installation and then bleed the last bit of air by loosening the hose connection.

Cylinder is defective or low of fluid.

The clutch master cylinder is next to the brake master cylinder, mounted to the firewall, here is a link:
http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?chapterTitle=Clutch&partName=Drive+Train&pageId=0900c1528003a458&subChapterTitle=Master+Cylinder&partId=0900c1528003a3e2

The clutch slave cylinder is mounted on the transmission, it has a hose from the clutch master cylinder running to it. Here is a link for that:
http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?chapterTitle=Clutch&partName=Drive+Train&pageId=0900c1528003a3e2&subChapterTitle=Slave+Cylinder&partId=0900c1528003a3e2

work it back and forth with your hand and you will get pedal after a while then bleed like you would brakes get help so one can pump and the other can bleed

Are you talking about the clutch? If so, it is on the front of the cylinder under some wires and stuff. Its a pain to get at but do-able. I used a 1/4 inch drive ratchet and mid depth socket when I replaced mine and had to bleed the system. If your having a problem with bleed down of the hydrolics replace the master and the slave. I did just the master and ended up replacing the slave too.

Either your master or slave cylinder is leaking (if hydraulic) Replace leaking cylinder with repair kit and blead the system. More serious it could be a problem on the clutch assembly.

i think youre doing the right thing. they are very stubborn to bleed because the hyd. line goes up high across back of engine before droppiing back down to slave cyl., trapping air. could try to gravity bleed by opening bleeder at slave, cap off of master cyl, full with fluid then it may start to come out after a bit. then try your process again. or can try to bleed at connections further up the line, working your way back to bleeder. hope this helps. be patient.

it is a hydraulic clutch system, especially on the 89 prelude. I have one the exact year model, and i had a hole in the slave cylinder hose going to the transaxle from the slave cylinder.

To refill the reservior, use DOT 3 brake fluid. The reservoir is located just to the left of the brake fluid reservoir underneath the hood on the driver's side firewall. you can't miss it.