Nay-Sayer Posted March 2, 2015 Share Posted March 2, 2015 I have a 2001 Pathfinder with 211K. I bought it @ about 207k miles and the previous owner explained that it has an oil leak. Looks like it might leak somewhere around a quart or so every 1000 miles. Does anyone know what are common causes for oil leaks on these vehicles? Thanks. Link to comment Share on other sites More sharing options...
Precise1 Posted March 2, 2015 Share Posted March 2, 2015 Seals... Does it mark it's spot? (drip oil when parked) Generally speaking, the possible sources of an oil leak are the valve cover gaskets, the cam seals (not easily accessible), the front and rear crank seals (not easily accessable), and the oil pan. With the valve covers and oil pan, the first thing is to snug the bolts/screws, but lightly (5lbs?). There is the possibility of it burning oil, but lets start with if it drips, and where... B Link to comment Share on other sites More sharing options...
Nay-Sayer Posted March 2, 2015 Author Share Posted March 2, 2015 Seals... Does it mark it's spot? (drip oil when parked) Generally speaking, the possible sources of an oil leak are the valve cover gaskets, the cam seals (not easily accessible), the front and rear crank seals (not easily accessable), and the oil pan. With the valve covers and oil pan, the first thing is to snug the bolts/screws, but lightly (5lbs?). There is the possibility of it burning oil, but lets start with if it drips, and where... B It drips on the passenger side near the front wheel... Link to comment Share on other sites More sharing options...
Kingman Posted March 2, 2015 Share Posted March 2, 2015 That's probably the oil cooler. Very common leak. Link to comment Share on other sites More sharing options...
Karmann Posted March 2, 2015 Share Posted March 2, 2015 I would try to get under the car to figure out where exactly it's coming from, try to trace the path of the drip. If it does happen to be an oil cooler (round thing with ribs on the passenger side of the motor above the PS rack, to the left of the oil filter but towards the bottom of the block), you're lucky because that's a very easy and simple fix, I just did it on mine. 1 Link to comment Share on other sites More sharing options...
Kingman Posted March 2, 2015 Share Posted March 2, 2015 If you want to find every leak, put a bottle of UV dye in the oil and run it for a few days. Then poke around at night with a black light. The leaked oil will show up green or orange. Link to comment Share on other sites More sharing options...
Nay-Sayer Posted March 3, 2015 Author Share Posted March 3, 2015 Can a leaking oil cooler cause the engine to throw codes? The Check Engine Light just came on, codes P1110 and P1135. Link to comment Share on other sites More sharing options...
96Pathfinder4x4 Posted March 4, 2015 Share Posted March 4, 2015 (edited) Try here. http://www.nissanpathfinders.net/forum/topic/32682-p1135p1110/ I would think if you were leaking badly, that low oil may cause codes....hopefully someone more experienced will chime in. Edited March 4, 2015 by 96Pathfinder4x4 Link to comment Share on other sites More sharing options...
Nay-Sayer Posted March 10, 2015 Author Share Posted March 10, 2015 Bump. Link to comment Share on other sites More sharing options...
96Pathfinder4x4 Posted March 10, 2015 Share Posted March 10, 2015 Did you fix the code problems according to the thread? Link to comment Share on other sites More sharing options...
Nay-Sayer Posted March 16, 2015 Author Share Posted March 16, 2015 Did you fix the code problems according to the thread? Not yet. I'm going to have the oil changed to see if that makes the codes go away... Link to comment Share on other sites More sharing options...
Precise1 Posted March 16, 2015 Share Posted March 16, 2015 It very well might... Since the Intake valve timing control solenoid valve uses oil flow to control timing, dirty oil can cause the valve to stuck open or close. Before replacing the valve, change engine oil and filter and reset engine code. http://engine-codes.com/p1110_nissan.html http://engine-codes.com/p1135_nissan.html Odd, it didn't list the codes in the 2002 FSM, I had to resort to Google. B Link to comment Share on other sites More sharing options...
Nay-Sayer Posted March 25, 2015 Author Share Posted March 25, 2015 Changed the oil, cancelled the codes, drove 25 miles and so far the check engine light hasn't come back on. Can anyone recommend a good source for an oil cooler? Thanks. Link to comment Share on other sites More sharing options...
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