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Minor Oil Leaks resolved, maybe? LONG Posted by pme [Email]  (#1496)  [Profile/Gallery]
(more from pme) on Wed, 25 Mar 2015 10:25:43
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Hi all:
Thanks to some scrolling around the board, and a few helpful pictures in an old BMillar post (thanks, Brett!), I think I have largely mitigated a couple of annoying leaks!
2003 9-5 Arc Sedan (V6 - 237,500 miles)
Originally I had a small leak on the back of the block, drivers side corner, that was working its way down to the exhaust and stinking up the cabin. Ruled out the pressure switch, and started looking a bit more closely at the oil separator, which is back there. Was having trouble figuring out how best to get a closer look when I found an old post from BMillar's V6 days, right after he had replaced the oil separator. His photo was a great help in figuring out what hoses went from where to where, and seeing exactly where the oil separator was.
Following the hose from the throttle body to the separator, I found that the short hose from the TB to the check valve was oil-soaked and had a hole in it, and the check valve was allowing some flow both ways. Replacing the check valve and shorter hose was a no brainer, and I was able to fit some 5/32" vacuum line that I had around nicely on the connections.
Next step was to get the hose from the check valve to the nipple on the separator off, and see if the nipple was plugged. Didn't think the hose was in bad shape until I saw it weeping from a crack by the nipple and it was so brittle it snapped off at the nipple. Creative razor blade cuts and needle nosed pliers got the residuals off the nipple.
I used a fine wire to reopen the plugged hole in the nipple, and was able to get the opening fully open. I only had the 5/32" hose around, it fit easily on the check valve, but really didn't fit on the nipple. I got it on with a bit of lubrication and figured I'd see how things went.
After the last of what was there burned off, I went a few weeks with no more smells. Very happy.
Then, I started to see a drop or two under the car in the garage. My Indy isolated it to seepage from the rear main seal. Said we should just keep an eye on it.
The fact that the hose I used was so small compared to what came off was bothering me, so I went out and got some 7/32" hose, changed it out, and while I was there gave the nipple orifice another swab, this time with a pipe cleaner dipped in a little gasoline as a solvent. It was still nice and clean.
Had a drip again the first night and second night, and none for the past couple of days! Could it be that just getting that much more flow through that PCV system relieved the pressure?
Anyway, it was fun to poke around and see what I could do, for pretty cheap parts and just a little research and patience.
And if the drips stay away, all the better!!
~pme
->Posting last edited on Wed, 25 Mar 2015 17:07:52.
, Wed, 25 Mar 2015 10:25:43 <-- Viewing This Message
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