98 gl1500 lower cowl melting


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Harrenwarris
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98 gl1500 lower cowl melting

Post by Harrenwarris » Sun Jun 30, 2019 9:55 pm



My right side lower cowl, radiator vent and lower (shin) heater vent are starting to melt and sag. Has anyone else ran into this issue? I did notice that the vent was closed, so maybe it was retaining too much heat on that side.



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WingAdmin
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Re: 98 gl1500 lower cowl melting

Post by WingAdmin » Sun Jun 30, 2019 10:12 pm

Harrenwarris wrote:
Sun Jun 30, 2019 9:55 pm
My right side lower cowl, radiator vent and lower (shin) heater vent are starting to melt and sag. Has anyone else ran into this issue? I did notice that the vent was closed, so maybe it was retaining too much heat on that side.
Something is definitely wrong. You should NEVER see this, under any circumstances. This means the air coming out of there is over 220°F (105°C) which is the temperature at which ABS begins to soften. If the air is that hot, then the coolant is even hotter. And why is it only happening on one side? That makes me suspect that the OTHER radiator is not doing much in the way of removing heat - perhaps it is blocked? As a result, the remaining radiator is having to dump ALL of the heat, with the result you're seeing. That's my best guess.

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CrystalPistol
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Re: 98 gl1500 lower cowl melting

Post by CrystalPistol » Mon Jul 01, 2019 12:20 am

Exhaust leaking from hole or header O ring maybe?

How about the hot air pipe?
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Sadanorakman
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Re: 98 gl1500 lower cowl melting

Post by Sadanorakman » Mon Jul 01, 2019 1:49 am

Wow, melting!

I would like to think its an exhaust leak rather than heat from the radiator, although I suppose the latter may be possible. Please let us know what you find!
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Erdeniz Umman
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Re: 98 gl1500 lower cowl melting

Post by Erdeniz Umman » Mon Jul 01, 2019 1:54 am

I suspect the fan does not work at the designed temp range or at all.

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Sadanorakman
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Re: 98 gl1500 lower cowl melting

Post by Sadanorakman » Mon Jul 01, 2019 8:35 am

Erdeniz Umman wrote:
Mon Jul 01, 2019 1:54 am
I suspect the fan does not work at the designed temp range or at all.
Then surely the engine would overheat when stationary?
Every day's a school day....What have you learned today?

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Erdeniz Umman
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Re: 98 gl1500 lower cowl melting

Post by Erdeniz Umman » Mon Jul 01, 2019 9:10 am

Sadanorakman wrote:
Mon Jul 01, 2019 8:35 am
Erdeniz Umman wrote:
Mon Jul 01, 2019 1:54 am
I suspect the fan does not work at the designed temp range or at all.
Then surely the engine would overheat when stationary?
It can be, if both left and right fans will not work. But I think the right fan is the culprit in this case.

Harrenwarris
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Re: 98 gl1500 lower cowl melting

Post by Harrenwarris » Mon Jul 01, 2019 9:18 am

Both fans work, no blockage of the radiator, I will check for exhaust leak, but the headers come out on the underside and the melting is coming from above the right side cylinders. Maybe melting is the wrong word it is getting hot enough to sag and contort like Tupperware



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