Overheating issue still not solved in 79 - Steve Saunders Goldwing Forums

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post #1 of 21 (permalink) Old 04-10-2005, 10:18 PM Thread Starter
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(short story: 79 had been overheating. bought new waterpump - bike already had a new pump "in situ." checked thermo and that was fine. looked at radiator - that appears fine (have extra in case))

I will end up putting it all back together this week and hopefully have it fired up by the coming weekend, but I do not have high hopes to have resolved the overheating issue, since I will have done very little to change my existing situation.

any more ideas before I bolt it all up?


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post #2 of 21 (permalink) Old 04-10-2005, 10:55 PM
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sanfelice wrote:
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(short story: 79 had been overheating. bought new waterpump - bike already had a new pump "in situ." checked thermo and that was fine. looked at radiator - that appears fine (have extra in case))

I will end up putting it all back together this week and hopefully have it fired up by the coming weekend, but I do not have high hopes to have resolved the overheating issue, since I will have done very little to change my existing situation.

any more ideas before I bolt it all up?
I don't have any good ideas, just long shots. How about the ignition timing and carburation, sometimes overheating isn't caused by the cooling system. Do the plugs look okay? Has the fan been coming on when the bike gets hot? Is the coolant a 50/50 mix and not water heavy?

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post #3 of 21 (permalink) Old 04-10-2005, 11:28 PM Thread Starter
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the fan was *not* coming on, so I wired it to the ACC and it was on all the time. The carburetion I thought was ok, but I will have to check the plugs again. It did pop a few times when I started it up this winter after having sat for a few months.

Yes, it's fairly presumptive of me to be posting this now, since I have not got the bike put back together just yet but I thought I could start on some new lead if anyone has any.


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post #4 of 21 (permalink) Old 04-10-2005, 11:31 PM
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sanfelice wrote:
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the fan was *not* coming on, so I wired it to the ACC and it was on all the time. The carburetion I thought was ok, but I will have to check the plugs again. It did pop a few times when I started it up this winter after having sat for a few months.

Yes, it's fairly presumptive of me to be posting this now, since I have not got the bike put back together just yet but I thought I could start on some new lead if anyone has any.
Nope it's not presumptive, good idea if someone can help out with some ideas before you button up. Sorry I can't. It is irritating, you know it's just got to be something pretty simple.

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post #5 of 21 (permalink) Old 04-11-2005, 12:31 AM
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Could air possibly be trapped in the system somewhere? Are you sure the pump is actually moving the water? Could still be a bad pump.

Bob

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post #6 of 21 (permalink) Old 04-11-2005, 02:03 AM
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If all is as you say and the electric fan is working, check the top radiator hose when the engine warms up. If the hose is too hard and you can't squeeze it easily, then a head gasket may be failing.

Ted Kelly.
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post #7 of 21 (permalink) Old 04-11-2005, 03:20 PM Thread Starter
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Hmm. Thanks for the tip. I don't relish the idea of doing this job again, but I'll know how to do it next time


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post #8 of 21 (permalink) Old 04-11-2005, 03:50 PM Thread Starter
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AZWinger wrote:
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Could air possibly be trapped in the system somewhere? Are you sure the pump is actually moving the water? Could still be a bad pump.

Bob

I am not sure that the pump is moving the water, but it is a new pump - and if it's still attached to the drive, how could it not move water? It is not loose nor is is "wonky" from side to side, so I simply assumed it was doing its job.

Would like to hear if there was a way to test this outside of the bike.


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post #9 of 21 (permalink) Old 04-11-2005, 04:41 PM
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in cars you can often see whether there is flow looking at the open radiator you should be able to "feel" tem,perature changes on the radiator when the thermostat opens.

I agree, if the pump turns it works. you could use the old srewdriver handle on the ear and tip to the water pump housing to "hear" if it turns while you run the engine, if not the problem is in the shaft that connects with the water pump...

is it possible you have a plugged up line somewhere in the engine from some debrie that got into the coolant side
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post #10 of 21 (permalink) Old 04-11-2005, 05:10 PM
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Not to tell you what to do, but if I had it tore down that much I'd put a hose on the input side of the pump, put it in a pan of water, start the bike and see if it pumped the pan dry. Turn the bike off after that. Oh, you have to prime the pump and hose (ensure they are full of water). The pump is not a self prime pump, so as some one else said - an air embolism will kill the pump - filled with air it won't pump. While at it hook the house water hose to the radiator and motor - force water through them to ensure they are flowing. If none of this helps, trade it for an '05 GL1800, I did - Good luck.

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