First serious problem since install of new motor (update) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-14-2007, 12:38 PM   #1
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Default First serious problem since install of new motor (update)

Everything has been find all weekend. Did 2 oil changes drove about 150 miles. Then i parked it at my house. Yesterday went down had the brother do a final oil change (while i was taking the exhaust off the other car). Drove home, no problems. This morning let it run for a while (since work called and told me they didnt need me another day (thank god but i will get to that). Went down the road a little (about 1 mile) came home, parked it and a freind said, whats dripping under your car? Back up, look at puddle, fingered it, smelled it and yup oil. Pulled dip stick almost bone dry. Went got the jack checked where it is coming from. I cant really tell. Underneath is pretty covered. Any ideas? No noises and dont think anything is gone.
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Old 08-14-2007, 12:43 PM   #2
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is the motor wet anywhere up top? around the Valve covers or lower intake?

if not.. then im thinking oil pan

i would clean it up. fill with oil and see if you can find the leak.
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Old 08-14-2007, 12:48 PM   #3
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Underneath is soaked. I know it isnt coming from the top, everything up there is nice and clean. I mean is was pretty much pouring out. I just took some pics and they are uploading.

I think that is what i will do, spray it down and check to see if i can find out where it is coming from. It sucks there goes $30 in oil (first time ever using Mobil 1) You know it couldnt have done it with the cheap 7 dollar generic brand ****.
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Old 08-14-2007, 12:57 PM   #4
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Not the best pictures, but it shows how much oil is there and where the most of it is. Any ideas?



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Old 08-14-2007, 01:02 PM   #5
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Just went out and took a light and looked. It isnt the oil pan. I am thinking maybe the oil presure sender unit. Those could cuase an oil leak correct?
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Old 08-14-2007, 01:10 PM   #6
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You should be able to see it through the wheelwell at idle if it'* coming from the sender.
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Old 08-14-2007, 01:12 PM   #7
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check the oil filter if its loose or maybe the ring that happen once to me
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Old 08-14-2007, 01:21 PM   #8
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My guess is the oil sending unit, it can pump out a lot of oil and fails on a lot of cars.
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Old 08-14-2007, 01:28 PM   #9
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I can't see the pics at work but spray it down with some brake clean (if you can get some easy) and see if it comes back in that area.
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Old 08-14-2007, 01:34 PM   #10
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checked the oil filter wasnt that, took it off thinking maybe the borther accidently left on the other rubber, nope

Going into town to get another filter and more oil and some brake cleaner and going to check the sending unit next. I think that is it
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