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Old 11-10-2010, 10:39 PM   #1 (permalink)
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Join Date: Aug 2010
Location: LAX, CA
Car: 1986 528e Auto,
Posts: 71
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Oil Leak - 1986 528E

I changed the oil and filter, and since it was a quart low I resolved to check it more frequently. I thought I had dropped the filter on the oil pressure sensor wire as it was dangling, so I put another female spade on it it and reconnected it. The oil light worked like it was supposed to, and everything seemed good. A week later my wife says it smells like hot oil, I check and it's a quart low. It LOOKED like the oil filter leaked, so I replaced it and added another quart of oil. The next week the same smell, the same quart low, the same appearance of oil on the exhaust. So I removed the filter, took my green scotchpad and made everything shiny, checked for dents and scratches, got another filter and some more oil. A week later, the same ol same ol.
I go back underneath the running car with a couple of rags and a flashlight, looking for leaks. I bumped the rubber boob for the oil pressure wire- and it leaked a bit of oil. ?!?! It didn't seem to leak at idle- there were only a couple of spots in my space. It leaked out a quart every 200 miles or so, probably at driving rpm (@1500-2000) pressures. It only cost $10 to replace with a cheap chinese part. A week later- no oil leak, no oil smell and the oil level stays the same. It doesn't leak anymore but it now flickers the oil light at idle and warmed up in gear (like at a stop light). I've heard of these going bad once in a while- but never one leaking without being damaged. My old one still looks pretty good.
Then again, after 25 years that ain't bad. The flicker bothers me, tho. I may put in an oil pressure gauge just to check.
This is twice- the last time it was the oil level sensor. Hopefully I'm running out of things to fix.
LOL :rolleyes

Last edited by gidgaf; 11-10-2010 at 10:52 PM.
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