85 1200 Aspencade: Oil from water pump weep hole - Steve Saunders Goldwing Forums

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post #1 of 30 (permalink) Old 05-12-2019, 11:45 PM Thread Starter
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85 1200 Aspencade: Oil from water pump weep hole

My bike dropped about a 6" diameter oil spot on the floor of my garage, shortly after riding about 120 miles. I had just changed the oil (and filter) with 3 quarts and 13 ounces of 15W40. (13 oz = about .4 quarts, if my math teacher did a good job.) The oem dip stick showed the level (cold) just at the full line. Could too much oil have caused a leak from the weep hole?

I'm grasping at straws here because I had the same problem back in 2016 (thread dated August 16, no# available) after working on the water pump and replacing the gasket. Problem was an o-ring then.

Note: Bike hasn't been ridden much in the last couple years.

Thanks, Pete

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post #2 of 30 (permalink) Old 05-13-2019, 12:09 AM
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If oil is coming out the weep hole it is a very good bet the o-ring or seal on the pump has failed. That is the purpose of the hole. Overfilling has nothing to do with it.
There is 36 ounces in a quart. If you added 13 ounces that is closer to a third of a quart.

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post #3 of 30 (permalink) Old 05-13-2019, 12:15 AM
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No, high oil level won't do that. The wrong anti-freeze will, but once it's done there's no going back. You could go in and replace the o-ring again, but the way you describe the leak, I'd just replace the pump.

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post #4 of 30 (permalink) Old 05-13-2019, 05:57 AM
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Quote:
Originally Posted by Bike...and Dennis View Post
No, high oil level won't do that. The wrong anti-freeze will, but once it's done there's no going back. You could go in and replace the o-ring again, but the way you describe the leak, I'd just replace the pump.
It's not the water pump leaking oil, it is the oil pump seal. What it will do though is wash the grease out of the water pump bearing.

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post #5 of 30 (permalink) Old 05-13-2019, 06:10 AM
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What DaveO430 said
Oil leak from the weep hole on the water pump is caused by an worn out oil seal for the water pump axle . This oil seal is located in the oil pump housing .
An oil leak from the weep hole wont be cured by replacing any gaskets,O-rings or the water pump itself .

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post #6 of 30 (permalink) Old 05-13-2019, 08:32 AM
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Originally Posted by redwing52 View Post
There is 36 ounces in a quart.

32 ounces in a quart.


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post #7 of 30 (permalink) Old 05-13-2019, 10:22 AM Thread Starter
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My thanks to you all for your posts. I was afraid that simply overfilling the oil was too simple an explanation.

Does the engine have to come out to replace the oil pump seal? (Fingers crossed here.) Thanks.

Pete

82 GL1100-I -- PA
85 GL1200-A -- ID

Last edited by PAPete; 05-13-2019 at 11:04 AM. Reason: Emphasis
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post #8 of 30 (permalink) Old 05-13-2019, 10:44 AM
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Originally Posted by PAPete View Post
My thanks to you all for your posts. I was afraid that simply overfilling the oil was too simple an explanation.

Does the engine have to come out to replace the oil pump seal? (Fingers crossed here.) Thanks.
Are you sure it is oil and not coolant mixed with grease and gunk?
If memory serves me there is an o-ring to keep oil out of the weep hole cavity and another to keep coolant out. If the o-ring that seals oil out has an issue you could have your problem. Also, are you using new crush seal washers on the water pump retaining bolts. Oil can seep by the bolts and leak from there as well.

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post #9 of 30 (permalink) Old 05-13-2019, 10:46 AM
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32 ounces in a quart.


Rayjoe
Ooops...why did I type that? Like the old excuse. I'm really getting old. Meant to say 36 eggs in three dozen!!!
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post #10 of 30 (permalink) Old 05-13-2019, 11:56 AM
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Quote:
Originally Posted by DaveO430 View Post
It's not the water pump leaking oil, it is the oil pump seal. What it will do though is wash the grease out of the water pump bearing.
Quote:
Originally Posted by SMEDEN(=the blacksmith) View Post
What DaveO430 said
Oil leak from the weep hole on the water pump is caused by an worn out oil seal for the water pump axle . This oil seal is located in the oil pump housing .
An oil leak from the weep hole wont be cured by replacing any gaskets,O-rings or the water pump itself .
Okay, so you're saying that the o-rings shown here aren't causing the problem, it's an o-ring inside the pump? If that's so, how does Pete replace the o-ring without replacing the pump?

A very long time ago, Bike had oil leaking from the weep hole and the mechanic said it was the pump. He replaced said pump and the leak stopped.
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