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Hi guys, I had a very worn release bearing that finally gave up and left me stranded. So i worked on a overhaul of the clutch system.
I changed at once:
Master Cylinder
Slave Cylinder
Fork
Fork pivot ball
Release bearing
Cover
DiscI assembled everything and bled the system but im having now this problem:
When cold the clutch grabs fines, I can even spin the wheels easily. After about 10-15 minutes of use the clutch starts slipping, I cant rev the engine hard in any gear because the engine will rev but the car will only slowly start to go faster.
What i observed is that the clutch release is at the very top of the pedal travel, also pedal height per workshop manual should be about 6.4 inches but is actually just about 4.5 inches. I can raise the pedal with my hand to the 6.4 inches of height but then i depress the pedal again and when i release it justs go back 4.5 inches, although clutch pedal clevin pin play is within spec.
I think is something related to adjustment but I cant figure what. After all this I bled the system again and looked for the push rod of the master, the push rod is almost unscrewed from the pedal assembly, if i screw the push rod more into the clutch the pedal assembly it will go even lower about 2,5 inches from the toeboard.
Looking forward on suggestions on how may I troubleshoot this issue.
Thanks in advance,
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I compared both new and old clutch and were identical.
Still before start taking all apart I would like to understand why the pedal is so akward:
First and foremost the pedal doesnt have any freeplay, the engagement point is just at the point I release the clutch. Also the pedal has a adjusting bolt that act as a stopper for the pedal.
Thing is pedal is not returning to the point the stopper is, even if i turn all the way down the adjusting bolt the pedal doesnt raise enough when released to touch the adjusting bolt.
BUT just for the sake of trying i more or less bled dry the system, with only air in the system the pedal returns all the way up to the stopper when released.
My theory is that as the engagement point is so high, when fluid is cold pressure plate can engage the clutch fine, but as fluid and maybe also air expands when hot the pressure plate is still pushing the friction plate a little bit enough to make it slip when load is applied.
But I cant figure why is this or whaterver is making the clutch slip happening.
When the car is cold I can put it at 2500 rpm in 5th gear, push the pedal to the metal and the clutch will not slip a bit and the speed will go up inmediately, after a few stop and go traffic i cannot even press hard in 2nd gear because the car will slip madly.
I hope i made the problem more clear now.
There is a flexible hose on the system?
I wonder whether it is internally damaged —just like what happens to flexible brake hoses—and is preventing the return of fluid to the clutch master.
Of course trapped air could be the issue –or a leaking or defective clutch master or slave cylinder.There’s an informative video on adjusting the slave cylinder
This link should also help
http://tech.mirage-performance.com/Manuals/Mirage%20Service%20Manuals/93-96%20service%20manual/Chassis%20&%20Body/21%20Clutch.pdfWell guys, appreciate the help, finally changed the master cylinder (again) pedal freeplay and pedal feel changed massively with the new master, i drove it for some miles and a few days now and everything seems ok.
So i will say its solved.
Thanks for the answers.
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