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Oil leak-think the LIM gasket might have struck me

 
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scott37300
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PostPosted: Sat May 07, 2011 5:53 pm    Post subject:  Oil leak-think the LIM gasket might have struck me Reply with quote

Car is a 04 LS 3.8 with around 50,000 miles. Has had a small oil leak for a while now, can see the back passenger side of the engine has oil traces. Once in a while it will leave a drip or two but no noticable oil loss or puddles. In January I drained the coolant because it was original, had some gunk in it but didn't look like oil. Oil has never looked milky at all.

Friday I was doing some work on the car, plugs, wires, thermostat, fuel filter, etc. About a month ago I put some oil leak dye in the oil. Used an engine tilter for the rear plugs and then took some time to see if I could track down the oil leak. Well I didn't come up with a positive place but there was oil in the valleys in between the plenum and the rear valve cover, by the injectors. I assume this is running down the corner of the engine. I don't think it was a rear valve cover leak, don't think the oil would puddle above that. So the only thing I can think of is the intake manifold gasket. Does this sound likely?

Here are some pictures of the oil puddled in the valleys.













Man is that thexton engine tilter worth it's weight in gold! I know you can do it with a ratchet strap but for 35 bucks this tool is well worth it.

Any advice on if this is an intake gasket issue or what else it might be would be much appreciated. Thanks
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00impala123
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PostPosted: Sat May 07, 2011 8:52 pm    Post subject:   Reply with quote

Its most likely an intake gasket. I just did min in December for the second time. both times it looked like that

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scott37300
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PostPosted: Sat May 07, 2011 9:15 pm    Post subject:   Reply with quote

That's what I was thinking. Looks like I know my next project!

Is it alright to drive until I get around to fixing it? It's had this leak for over a year now.

Next question is where is the best place to get parts? I've read the write ups and figure I will do the upper and lower gasket, the two elbows, injector o-rings if needed. Anything else I will need for parts while I'm in there? Any specialty tools I will need for this?

Thanks
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billy101
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2010 Chevrolet Malibu


PostPosted: Sat May 07, 2011 9:51 pm    Post subject:   Reply with quote

scott37300 wrote:
That's what I was thinking. Looks like I know my next project!

Is it alright to drive until I get around to fixing it? It's had this leak for over a year now.

Next question is where is the best place to get parts? I've read the write ups and figure I will do the upper and lower gasket, the two elbows, injector o-rings if needed. Anything else I will need for parts while I'm in there? Any specialty tools I will need for this?

Thanks


If you take the throttlebody off the plenum, you might as well get a new TB gasket as well. When we did my LIM gaskets we changed the waterpump as well because it was right there and easy to get to, might want to think about that as well.
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