mfoley412 Posted October 8, 2013 Share Posted October 8, 2013 Hey there, I have been wondering about this slow leak on my pathfinder, I have been monitoring it since I got the truck about a year ago, seems to be coming from the slave cylinder, although I am not completely sure of it. The dust cover seal around the slave is all yucky and the drips seem to be coming down from there and dripping off of the tranny, not very much leaks ever, and I can't tell that anything is losing fluid. The other possibility is from changing the oil because of where the filter is stupidly located there is oil that is inadvertently spilled almost every time the oil is changed, then eventually cools down/dries out, gets reheated and slowly makes its way down and across the engine and onto the tranny where it drips, drips, drips.... And then the OTHER, OTHER possibility I have been mulling over is if the rear main seal is leaking inside where the slave is mounted and coming through the seal, which i suppose is possible but I have no clue. I think its probably a combination of two of these things.. I have some photos of the slave and the crossmember/oil pan to show that there is an oil film over a lot of the bottom which i think is from the oil filter also the seal and/or dust cover for the slave is ripped a little bit and it looks more wet there than anywhere else. http://i741.photobucket.com/albums/xx59/matthew_foley1/slave2_zpsbf54bef6.jpg (slave) http://i741.photobucket.com/albums/xx59/matthew_foley1/slave1_zps63d60ae8.jpg (slave) http://i741.photobucket.com/albums/xx59/matthew_foley1/underc1_zpse2045e54.jpg Crossmember/oil pan Link to comment Share on other sites More sharing options...
Trogdor636 Posted October 8, 2013 Share Posted October 8, 2013 Do you have to keep refilling the clutch master? That would be the first sign the slave is leaking. Link to comment Share on other sites More sharing options...
mfoley412 Posted October 9, 2013 Author Share Posted October 9, 2013 No nothing really ever has to be refilled. the oil did go down a little bit after driving from central oregon down almost to tahoe and back. but I figure that I would probably lose a little bit of oil on that long of a trip..because after I changed the oil the level did not drop until after driving for a couple thousand miles AND the trip down and back. would my car with almost 190,000 on the clock burn a little bit of oil off over that big of a trip? Also the fluid in the master cylinder is pretty black... Link to comment Share on other sites More sharing options...
Trogdor636 Posted October 9, 2013 Share Posted October 9, 2013 That first pic you are showing. The square rubber isn't your slave cylinder. That's where your clutch fork is. The slave is actually mounted right next to it with 2 bolts.<br /><br />My guess is you have oil leaking from the valve covers (very common) or even possibly a small leak from your oil pressure switch. And yes, oil spillage from oil changes are a strong possibility. Link to comment Share on other sites More sharing options...
mfoley412 Posted October 9, 2013 Author Share Posted October 9, 2013 I actually did notice one of the screws on the valve cover are wet with oil... thanks a bunch for your input! Link to comment Share on other sites More sharing options...
Alkorahil Posted October 9, 2013 Share Posted October 9, 2013 My guess is you have oil leaking from the valve covers (very common) or even possibly a small leak from your oil pressure switch. And yes, oil spillage from oil changes are a strong possibility. Agreed, any of these can end up pooling oil there over time as gravity pulls it down. Link to comment Share on other sites More sharing options...
mfoley412 Posted October 9, 2013 Author Share Posted October 9, 2013 welll looks like I need to pressure wash the bottom off so I can make sure. but thanks Im pretty sure its the vavle cover + oil from oil changes. Link to comment Share on other sites More sharing options...
mfoley412 Posted October 9, 2013 Author Share Posted October 9, 2013 (edited) oops double posted, anyone know of a good detergent to help get the oil off pretty easily? Edited October 9, 2013 by mfoley412 Link to comment Share on other sites More sharing options...
adamzan Posted October 10, 2013 Share Posted October 10, 2013 Simple green Link to comment Share on other sites More sharing options...
mfoley412 Posted January 30, 2014 Author Share Posted January 30, 2014 So, I think I am finally going to fix the leak from the oil pressure switch.. Has anyone else had this problem? Why exactly is it leaking? can I just put some silicone squeeze gasket on the threads? or does it just need an O ring to be replaced? Link to comment Share on other sites More sharing options...
silverton Posted January 30, 2014 Share Posted January 30, 2014 So, I think I am finally going to fix the leak from the oil pressure switch.. Has anyone else had this problem? Why exactly is it leaking? can I just put some silicone squeeze gasket on the threads? or does it just need an O ring to be replaced? just some regular ole plumbers tape on the threads should do you. Don't over tighten though on reinstallation, easily broken, then you're in a whole other heap of trouble. 1 Link to comment Share on other sites More sharing options...
mfoley412 Posted February 1, 2014 Author Share Posted February 1, 2014 I put plumbers tape on it and thought the leak stopped but its still got a small leak.. how far are you supposed to screw it in? or is there a torque specification for the Oil Pressure Switch? Link to comment Share on other sites More sharing options...
mfoley412 Posted February 1, 2014 Author Share Posted February 1, 2014 (edited) I guess the torque is 7-12 foot lbs. I think i put it in a little more than that... should I try a new switch or a bolt with the same threading?? lol as I'm writing this I am answering my own questions.. Any and ALL input is very much appreciated though!! Also does anyone know the threading off hand so i don't have to pull the damned thing out to measure it with the things at ace? Edited February 1, 2014 by mfoley412 Link to comment Share on other sites More sharing options...
adamzan Posted February 1, 2014 Share Posted February 1, 2014 I bought a new switch for mine, it was about 10 dollars, and it stopped the leak. Link to comment Share on other sites More sharing options...
mfoley412 Posted February 1, 2014 Author Share Posted February 1, 2014 Sweet ordered a Nissan replacement hopefully it fixes it. I read somewhere else that it leaks through the switch . Sent from my EVO using Tapatalk Link to comment Share on other sites More sharing options...
mfoley412 Posted February 11, 2014 Author Share Posted February 11, 2014 Woohoo! it's only been since yesterday but my starter is dry this morning! New switch definitely was the way to go and now that I did this I noticed there was some gasket material that was worn off of the old switch where the electrical connector is.. Yay for no more oil leaks! (yet anyways..) Link to comment Share on other sites More sharing options...
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