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Discussion Starter · #1 ·
First off some history. I purchased the bike and rode for about 20 minutes, on my way home, before it heated up. I stopped and checked it. Oil was boiling, because of all the coolant in it. The previous owner, admittedly not mechanically inclined, had put jb weld in the weep hole to "fix" the leak. I removed the jb weld and had no further problems, no weeping. I flushed the oil 2 times and no more coolant in the oil. I didn't drive it much but had no further problems. That was last year...
This year I am experiencing overheating issues and a grinding noise from the front area of the engine. I am thinking fan or valves. I have removed the air box and all the hoses that went to it and put on pods. So questions:
1. Do I block off the coolant overflow breather hose? It is spewing out antifreeze.
2. Engine noise. Is this more likely from the valves or fan? Can I check the fan for movement by removing the radiator and running it? Will it cause harm?

1982 Honda GL500 Interstate
10,000 miles
Sat for a couple years without care before I got it.
 

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Discussion Starter · #6 · (Edited)
Well thanks for the replies. Sorry for the delay. I eliminated the grinding noise with a valve clearance and timing chain tension service. Im assuming the noise was chain related. I checked the fan. Looks like a 30 year old piece of plastic. There are some noticable wear spots where it must have been hitting something. I checked for flow in radiator. It was moving coolant at op temp. I will soon upgrade to an electric fan and better performing radiator with custom overflow tank.
I rode it all day yesterday and noticed minor oil leaking at tensioner adjusting nut and clutch lever seal. The temp was pretty high at times, almost redline, but seemed to correct itself by dropping to half of the thick white line.
I took it out today and noticed the clutch plates sticking ( it tried to creep forward in first with the clutch lever in) a subtle rev freed them up. I adjusted it with no avail. Also after 20 minutes of steady 60 mph it jumped to red line on temp gauge and stayed until I shut it off.
I figured I would put In some Lucas oil stabilizer to help the clutch.
I opened the oil dipstick with a hot engine on the side stand and oil poured out. The viscosity seemed unusually low. Is this common? There is no coolant in oil but valve covers smelled slightly of fuel. The floats are adjusted properly. Im leaning toward head gasket again?
Thank you.
 
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