I have a 79 gl1000 that has an oil leak. The leak is from a small hole in the crankcase . I have seen this hole on every other 1000 and 1100 I have looked at, but mine is the only one that leaks. What is the purpose of this hole and is there an easy fix for this leak?
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79 GL1000
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maintainer
- Posts: 291
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- Motorcycle: 1977 GL 1000
1982 GL 1100 Interstate (Sold)
Re: 79 GL1000
Where is it?
Could be the weep hole for the waterpump.
When the internal seal goes bad, they can drip either oil or coolant depending on which one is bad.
Could be the weep hole for the waterpump.
When the internal seal goes bad, they can drip either oil or coolant depending on which one is bad.
1982 GL 1100 Interstate SOLD
1977 GL 1000 Standard (naked can be good, who knew?)
1977 GL 1000 Standard (naked can be good, who knew?)
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Old Guard
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Re: 79 GL1000
can this hole be plugged without adverse effects?
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deanbw
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Re: 79 GL1000
NO.....that hole is there to let coolant or oil out if seal is bad. If you have a water pump seal going out you need to pull the front cover and replace the seals at the very least, pump should be replaced as long as you're there but that's your call. If you plug the hole, then oil or coolant can go places it does not belong, and coolant in the wrong places can be a very bad thing.Old Guard wrote:can this hole be plugged without adverse effects?
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Old Guard
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- Joined: Sat Mar 12, 2016 8:38 pm
- Location: Lincoln, Il, USA
- Motorcycle: 1979 GL 1000, 1982 GL1100, !983 GL1100
Re: 79 GL1000
There is no coolant leaking, only oil, so what seal would cause this?
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spiralout
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1980 GL1100I (with '77 1000 engine)
1996 GL1500 SE
Re: 79 GL1000
Old Guard wrote:There is no coolant leaking, only oil, so what seal would cause this?
deanbw wrote: NO.....that hole is there to let coolant or oil out if seal is bad. If you have a water pump seal going out ...
maintainer wrote: Could be the weep hole for the waterpump.
When the internal seal goes bad, they can drip either oil or coolant depending on which one is bad.
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deanbw
- Posts: 280
- Joined: Sun Nov 30, 2014 2:30 am
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- Motorcycle: 1986 gl1200a aspencade . Honda xl600r, '68 z50, '82z50, '80cx500c, '00 klr250
Re: 79 GL1000
The pump has a seal for coolant at the impeller end and a seal for oil at the rear where the drive is, my guess is because it is oil and not coolant it is the oil seal on the water pump. Pull the front cover, remove water pump and you have the choice of rebuilding the pump or replacing the pump. I just bought a factory honda pump and replaced it, pretty cheap I think, for the years you get out of it and the job it does. http://parts.southernhonda.com/p/Honda_ ... 9-681.htmlOld Guard wrote:There is no coolant leaking, only oil, so what seal would cause this?