85 GL1200 Oil in coolant

Information and questions on GL1200 Goldwings (1984-1987)
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85 GL1200 Oil in coolant

Post by 5str48 » Wed Mar 18, 2015 10:54 pm

I'm getting a relatively small amount of oil in the overflow container. No coolant or oil burning out of exhaust as far as I can tell. I know I might have a head gasket problem, but I want to know if there are other areas where oil can get into the cooling system. I'd like to avoid new head gaskets if possible. Any thoughts? Thanks

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Re: 85 GL1200 Oil in coolant

Post by WingAdmin » Thu Mar 19, 2015 1:13 pm

It can happen if the water pump fails in a specific way (both bearings failed) AND the weep hole is plugged. Other than that, you're looking at a head gasket job. Check the compression and bleed-down on your cylinders to find the guilty party.

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Re: 85 GL1200 Oil in coolant

Post by oldishwinger » Thu Mar 19, 2015 5:19 pm

a worn oil seal behind the water pump, will let oil into coolant, it requires removing the front cover, and water pump to reach it. would suggest while in there replace all seals, and waterpump

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Re: 85 GL1200 Oil in coolant

Post by 86pearlblue » Sat Mar 21, 2015 12:02 pm

Are you getting coolant in your oil as well? I find it hard to believe that an issue with the water pump would cause oil in the coolant, as the coolant side of the pump is under pressure and the oil side is not. Therefore, I would not suspect that as the issue, but an inspection couldn't hurt, if for nothing else, to clear out the weep hole.

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