dave_hl Posted October 28, 2009 Share Posted October 28, 2009 I was under the car a few days (1980 280zx) ago and cleaning an oil leak. For who knows what reason i pushed the piston for the clutch slave cylinder in. Not thinking it would actaully push in i went "oops" and pulled it back out. There is now more play in the clutch then there used to be and i think its easier to push the clutch in. It seemed to disengage fine and drive ok but over the course of a 30 minute drive stopping and starting the clutch would disengage less and less each time i pushed the pedal in until it was almost impossible to get it into first (even when reveing quickly in neutral first). It's got me boggled, i can't think why it would act differently after the cars warm, have i screwed the slave cylinder perhaps? help appreciated. cheers. dave. Quote Link to comment Share on other sites More sharing options...
turboboost Posted October 28, 2009 Share Posted October 28, 2009 Sounds like you could have a bad master cylinder or slave. I'm not sure why it's happening only when it's warm, but it *could* be related to heating up the cylinder enough that it loses it's seal. I'd replace both the master and slave (pretty cheap) and I bet your problem will disappear. Quote Link to comment Share on other sites More sharing options...
dave_hl Posted October 28, 2009 Author Share Posted October 28, 2009 yeah i'd say replacing both of those would most probably fix it but im hoping its not that major. Yeah thats not a bad theory that the heat could cause loss of seal... i was also thinking the fluid may thin having some sort of effect. perhaps when i pushed in the slave/operating cylinder i damaged a seal. anyone else have any thoughts/things i could try before i go replacing both slave and master cylinders? Quote Link to comment Share on other sites More sharing options...
Evan Purple240zt Posted October 28, 2009 Share Posted October 28, 2009 Sounds like you just got air in the system, have you tried bleeding it out? Quote Link to comment Share on other sites More sharing options...
johnc Posted October 28, 2009 Share Posted October 28, 2009 ^ +1 Quote Link to comment Share on other sites More sharing options...
JMortensen Posted October 28, 2009 Share Posted October 28, 2009 I was under the car a few days (1980 280zx) ago and cleaning an oil leak. For who knows what reason i pushed the piston for the clutch slave cylinder in. Not thinking it would actaully push in i went "oops" and pulled it back out. There is now more play in the clutch then there used to be and i think its easier to push the clutch in. It seemed to disengage fine and drive ok but over the course of a 30 minute drive stopping and starting the clutch would disengage less and less each time i pushed the pedal in until it was almost impossible to get it into first (even when reveing quickly in neutral first).It's got me boggled, i can't think why it would act differently after the cars warm, have i screwed the slave cylinder perhaps? help appreciated. Mine acted just like that when I had a bad slave cylinder. Most people recommend replacing the master and slave at the same time. Pull the boot on both, and if either is leaking fluid, replace them. Quote Link to comment Share on other sites More sharing options...
dave_hl Posted October 29, 2009 Author Share Posted October 29, 2009 nup haven't tried bleeding it, never bled any hydrolics before but i've read a bit about it a while ago so i'll learn how and give it a shot... if that fails to fix the problem then i'll start replacing things. thanks for the help guys. Quote Link to comment Share on other sites More sharing options...
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