84 1200 heating up again


Information and questions on GL1200 Goldwings (1984-1987)
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goofy1989
Posts: 9
Joined: Fri Feb 19, 2010 9:55 pm
Location: anson, texas
Motorcycle: 1984 gl1200
1984 1200 interstate

84 1200 heating up again

Postby goofy1989 » Sun Feb 21, 2010 2:41 pm



This is my first 1200 not my first Honda. I bought this bike about a month ago with water pump out and one head gasket leaking cheap. Put in shop had new water pump and both head gaskets replaced. Went on a 100 mile run with my farther n law no problems mpg was 30. Next day went one a 150 mile run with my twin brother and the last ten miles left bank started knocking and started heating up again. No leaks, oil level is fine, but have oil on left saddle bags. It did not get past half way but warmer than had been.
What else can cause this and do I need a complete motor overhaul.



goofy1989
Posts: 9
Joined: Fri Feb 19, 2010 9:55 pm
Location: anson, texas
Motorcycle: 1984 gl1200
1984 1200 interstate

Re: 84 1200 heating up again

Postby goofy1989 » Sun Feb 21, 2010 2:51 pm

this bike runs real quiet and starts right up every time. very clean also minus oil on right side.

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WingAdmin
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 84 1200 heating up again

Postby WingAdmin » Sun Feb 21, 2010 7:42 pm

Well the first thing to do is to determine where the oil is coming from.

Next, check both your coolant and oil, to see if you've got either in the other. Coolant in the oil will make the oil a muddy brown color. Oil in the coolant will be visible in the radiator neck, as it's lighter than water and will migrate its way up there.

It could also be something as simple as air in the coolant system from when the coolant was replaced. Running the engine with the radiator cap off for a few minutes will normally take care of that.

goofy1989
Posts: 9
Joined: Fri Feb 19, 2010 9:55 pm
Location: anson, texas
Motorcycle: 1984 gl1200
1984 1200 interstate

Re: 84 1200 heating up again

Postby goofy1989 » Mon Feb 22, 2010 12:49 am

water is clean and oil is clear. is there transmission oil on left side bottom or under?

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WingAdmin
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Posts: 17045
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 84 1200 heating up again

Postby WingAdmin » Mon Feb 22, 2010 7:57 am

The transmission uses engine oil - there's no separate transmission fluid like in a car, so there's oil pretty well everywhere inside the engine case.

I'd clean the engine as best you can, go out for a short ride, and see if you can tell where the oil is coming from.

goofy1989
Posts: 9
Joined: Fri Feb 19, 2010 9:55 pm
Location: anson, texas
Motorcycle: 1984 gl1200
1984 1200 interstate

Re: 84 1200 heating up again

Postby goofy1989 » Thu Feb 25, 2010 11:53 am

oil leak is from shifter. is this hard to change?

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WingAdmin
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Posts: 17045
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 84 1200 heating up again

Postby WingAdmin » Thu Feb 25, 2010 12:14 pm

It's very easy to change. First remove the shifter from the shifter shaft. Then pry out the old seal with a thin screwdriver - this is easier to do than it sounds.

Before installing the new seal (it should be an OEM seal - aftermarkets don't seem to fit as well), wrap some masking tape around the splined end on the shaft, to protect the new seal. Also coat the inside of the new seal with oil, to help it slide into place.

Push the new seal on and into place as well as you can with your fingers. Then use a deep 3/4" socket with a rubber mallet to gently push it the rest of the way into place.

Remove the masking tape, replace the shifter, and you're done! Shouldn't take more than 15-20 minutes.

goofy1989
Posts: 9
Joined: Fri Feb 19, 2010 9:55 pm
Location: anson, texas
Motorcycle: 1984 gl1200
1984 1200 interstate

Re: 84 1200 heating up again

Postby goofy1989 » Mon Apr 12, 2010 1:01 am

:P I got the shifter seal changed. thanks. got the heating problem fixed. had air in system. now I have an oil leak, mainly on the left side. it is not the shifter seal. I have no oil leaks on ground, before or after i take a ride but, while i'm riding there is oil on the bags, foot pegs, and on my boots.???????? and the oil level is fine????? I rode about 700 miles last week and very little oil was used by the oil level, not even enough to really show, but oil everywhere??// And I got about 35 mpg with my wife and I both on board.

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tricky
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Re: 84 1200 heating up again

Postby tricky » Mon Apr 12, 2010 7:08 am

It could be the rubber seals on the valve covers, if they weren't changed during the head gasket change.

If you do find it is them, you could put a coat of grease on them.

also careful on tightening the bolts they have shoulders on them so the rubber gaskets are not squashed too much.




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