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Old 08-09-2011, 05:57 PM   #1
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Oil Leak.

I have a oil leak coming from somewhere on the front of my engine. I know it's engine oil and it only comes out when the engine is running. I washed the engine bay and underneath and it is all over the front of my engine and has been blown down the side and underneath from the fan. Has anyone else had this same issue? If so can you give me an idea of where it may be coming from. All the gaskets look good and don't see any evidence of them leaking. It looks like it may be a seal but can't see them because of the pulleys.
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Old 08-09-2011, 06:43 PM   #2
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Re: Oil Leak.

Front main most likely or power steering falling down onto belts?
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Old 08-09-2011, 06:45 PM   #3
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Re: Oil Leak.

I've had mine replaced before and the person who installed it didn't get it to seat right and it still leaked and I lost my engine cause of it. Its not overly hard to do with the correct tools.
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Old 08-09-2011, 08:55 PM   #4
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Re: Oil Leak.

I've been searching Chiltons and the parts stores and none of them show a front main seal. Is there a different name for it? Is it part of the timing cover?
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Old 08-09-2011, 09:48 PM   #5
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Re: Oil Leak.

The seal is in the cover right behind the crankshaft dampener. The GM part number is supposed to be 89017622 and will cost you about $15 at the dealer.

But wash the engine down with simple green and water and let it idle so the fan isn't running at full speed and use a bright light to try and watch for the leak.
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Old 08-09-2011, 09:52 PM   #6
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Re: Oil Leak.

I did, it's coming from the front main seal. Has anyone on the site replaced one yet? I was looking through the Chilton's manual but wasn't able to find anything about it. I want to know what all tools I will need to complete this. I want to knock it out this weekend and won't have another vehicle to do part or tool runs with.
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Old 08-09-2011, 09:57 PM   #7
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Re: Oil Leak.

This should help. But if it was me I would be creative when it comes to changing the seal.

I would remove crankshaft balancer and then using a small chisel or punch I would very very carefully collapse the sides of the seal where it fits into the cover without damaging the cover itself. The I would use a sharp chisel to cut one side of the seal in two and pull it out.

I would clean the end of the crankshaft and lubricate it with engine oil, then slide the new seal against the cover. Using a large socket or piece of pipe and hammer I would carefully tap the seal into place.

Note: whether I tried this or not depends on if the seal has an outer metal ring or not.
Attached Files
File Type: doc Water Pump.doc (88.0 KB, 70 views)
File Type: doc Water Pump 2.doc (20.0 KB, 67 views)
File Type: doc Crankshaft Balancer.doc (79.5 KB, 81 views)
File Type: doc Crankshaft Balancer 2.doc (59.5 KB, 140 views)
File Type: doc Engine Front Cover.doc (57.0 KB, 143 views)
File Type: doc Engine Front Cover 2.doc (75.0 KB, 68 views)
File Type: doc Engine Front Cover 3.doc (20.0 KB, 79 views)
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Old 08-10-2011, 07:43 AM   #8
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Re: Oil Leak.

So I called the local dealership and they told me you can get just the front crankshaft oil seal, you have to buy the whole timing cover and replace it. I called Autozone and they have a timing cover gasket set that looks as though it has the oil seal in it. The dealership said that the reason they don't carry just the seal is because they have been having issue with it so they just replace the timing cover instead. Here is a pic of the set that Autozone carries.

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Old 08-10-2011, 07:53 AM   #9
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Re: Oil Leak.

Sounds about right. What is the parts cost difference between the gasket set and the timing chain cover? Might be worth spending the extra $$$
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Old 08-10-2011, 08:08 AM   #10
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Re: Oil Leak.

Gasket set is $23 and the cover is $160. You can only get the cover at the dealership too.
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Old 08-10-2011, 08:14 AM   #11
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Re: Oil Leak.

Have you tried GMpartsdirect.com?

I just found the Timing Cover for $97 and the seal for $8.47
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Old 08-10-2011, 08:18 AM   #12
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Re: Oil Leak.

No I haven't tried them.
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Old 08-10-2011, 08:20 AM   #13
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Re: Oil Leak.

Be sure to look at the shipping from GMPD as it can suck ass

Check this place OEM Parts From GM Acdelco and Ford Motorcraft as they have pretty good prices and flat rate shipping or free shipping for over 75
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Old 08-10-2011, 09:05 AM   #14
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Re: Oil Leak.

Has anyone replaced either the oil seal or the timing cover on the Nation? I just don't wanna waste money and time by getting the seal and end up having to replace the whole cover anyway.
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Old 08-10-2011, 09:31 AM   #15
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Re: Oil Leak.

Like I said I've had it done and it still leaked. But a simpler removal method is take a screw and run it into the seal itself and then use a prybar and pry on the screw to remove seal.
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Old 08-10-2011, 09:43 AM   #16
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Re: Oil Leak.

I'm not worried about the seal removal and install. The dealership just told me that there was a reason they don't replace only the seal so I don't wanna waste money but sometimes the dealers are just looking for more money too, Hell he was the parts guy and tried to get me to come trade it in for a Silverado. I know the seal install would be a lot easier than the cover. There is a lot of stuff to drop to do the cover and a lot of gaskets to replace.
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Old 08-10-2011, 10:14 AM   #17
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Re: Oil Leak.

My front main still leaked after replacing it though
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Old 08-10-2011, 10:25 AM   #18
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Re: Oil Leak.

If you want to fix it without replacing anything, go buy a bottle of AT205 and add it to the engine and change your oil and filter as well.

What this product will do is cause the rubber seal to slightly expand this seal and stop the leak plus it will not damage anything.

You can get this at any auto parts store for around $18.00 dollars and it does work.
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Old 08-10-2011, 01:27 PM   #19
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Re: Oil Leak.

Wow -.- willing to expand the other seals at the same time and make them break faster then? Just replace the seal. Use the tool for it because the seal is finicky and if not sitting right doesn't like to seal.
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Old 08-10-2011, 02:34 PM   #20
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Re: Oil Leak.

Quote:
Originally Posted by M_O_Z View Post
My front main still leaked after replacing it though
Need to check with the part store and see if they carry speedy sleeves. They are thin piece of metal which fits over the harmonic balancer snout. This will cure your oil leak for sure. It gives the new seal a clean area to ride on instead of the previous spot where the old seal was previously. Fel Pro makes these sleeves so they should be readily available. This speedy sleeve will save you from buying a new balancer.
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