I'm reaching the point of frustration trying to figure out my clutch problems.

So I lost my clutch pedal at an event a few months ago and initial diagnosis led me to suspect either the master or slave cylinder, so I've replaced both, I've then since been trying to bleed it with little luck.

So far I've tried, vacuum bleeder, using a syringe to suck fluid through and a second person manually pressing the pedal and me tightening and loosening the nipple, and whilst I now have a partial pedal, it still tends to want to stay on the floor unless persuaded back, and I'm still getting tonnes of air come out.

I am getting movement on the clutch fork but I suspect it isn't enough to fully disengage the clutch, (I havnt tried with the engine running as I've still got the UIM dismantled and didn't want to reassemble it until I knew the clutch issue was resolved).

I've removed the pedal and checked it and welded it for extra reassurance, it isn't the pedal assembly.

Im running out of ideas of what to do, it seems like its sucking air in from somewhere other than the system, I'm wondering if it's coming via the threads of the bleed screw.

The other concern I have is that the master cylinder was almost identical in design except rather than the line to the slave screwing straight into the cylinder, there was a banjo bolt with a fitting that the line then bolted to, but I've ran the part number through multiple sites and it's definitely an RX8 master cylinder, I just created an extension of brake line to reach the new connector location.

Anyone got any ideas?

 

it likely has air trapped in the MC, you have to bleed it first (kind of messy) before hooking up the line to the slave.

there is always the possibility of an air bubble trapped in the fluid feed line from the brake MC reservoir. I usually thump that hard with my finger several times to try and dislodge any air bubbles in there.

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How do I go about that since it doesn't come with a bleed nipple, just find one the correct threat and put it into where the outlet is for the slave?

 

Pretty much, yeah. They generally come with new master cylinders so you can bench bleed them to avoid damage during installation.

 

I'll add this to the top of my list of things to try when I get time in the garage next.

 

Is there any specific guide on how to bench bleed correctly for the rx8 or any tips you can give me on how to do it properly?