Clutch Sticking

[tomtom92]

Hey guys,

long time reader here and now i have a problem. i have an rb25det with an rb25 gearbox in my silvia and i have noticed that sometimes after hard acceleration then backing off, my clutch pedal stays down. When the pedal is "on the ground" the clutch does not engage so the car is in gear and driving normally. However, if i lift the pedal back up with my foot it stays up and works fine. When the pedal does drop i can still change gear but the friction point is nearly at the firewall but when i lift the pedal back up it comes back to normal. sometimes after the car has been sitting for a while and i go to drive it i find the pedal is on the floor before i start the car. other times its fine. the master cylinder if full with fluid.

any help will be greatly appreciated.

cheers

[R.3.2.G.T.R]

try bleeding the lines first, guide in diy section

[tomtom92]

ok thanks, i will try that first, seems like an involved process from reading through the guide haha. is it possible it could be anything like the clutch plate sticking to the flywheel? what is the box on the right side/underside of the gearbox. there seems to be a small amount of residue coming from it and it has a couple of hard lines running to it.

thnx for the help

Edited November 25, 2010 by tomtom92

[Dobz]

The clutch plate will never stick to the flywheel unless you wore it down to metal and let it grind against the flywheel enough that they weld together.

The slave cylinder is bolted to the ride side of the gearbox, if there is fluid leaking from it then it you need to determine if its the line leaking or the slave cylinder piston seal. Check your clutch fluid level and make sure it hasn't all leaked out.

Edited November 26, 2010 by Dobz

[akaaa7]

Hey guys,

long time reader here and now i have a problem. i have an rb25det with an rb25 gearbox in my silvia and i have noticed that sometimes after hard acceleration then backing off, my clutch pedal stays down. When the pedal is "on the ground" the clutch does not engage so the car is in gear and driving normally. However, if i lift the pedal back up with my foot it stays up and works fine. When the pedal does drop i can still change gear but the friction point is nearly at the firewall but when i lift the pedal back up it comes back to normal. sometimes after the car has been sitting for a while and i go to drive it i find the pedal is on the floor before i start the car. other times its fine. the master cylinder if full with fluid.

any help will be greatly appreciated.

cheers

seal in the master is cactus happened in my car can get a whole new master cyclinder off ebay for 100 delivered...still goin strong in mine and half the price of a rebuild!

[tomtom92]

seal in the master is cactus happened in my car can get a whole new master cyclinder off ebay for 100 delivered...still goin strong in mine and half the price of a rebuild!

oh ok, ill have a look at the MC. Yeah they are not too hard to find and fairly cheap to buy.

cheers