coolant leak


Information and questions on GL1500 Goldwings (1988-2000)
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roadhog63
Posts: 3
Joined: Thu Jul 28, 2016 3:52 pm
Location: Bemidji, MN USA
Motorcycle: 1990 GL1500 SE Goldwing

coolant leak

Postby roadhog63 » Thu Jul 28, 2016 4:07 pm



I have a 1990 Honda SE Goldwing. I have a coolant leak dripping from the top by the reserve tank, so it appears. I starts dripping after the motor reaches operating temp. I shut the motor off and it quits dripping after a few minutes. I feel around the levelgauge, reserve tank, radiator cap and the upper small hoses that I can reach, but can't feel any leaks. It is coming from that area. I can see it. Just can't find the source. Could it be my radiator cap is stuck and not holding the pressure. The motor doesn't overheat. I believe it is leaking from to high of a spot to be the head gasket. Any ideas out there? Thanks, Don



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Aussie81Interstate
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Location: Penrith Australia
Motorcycle: 1982 CX500 Turbo (restoration project)
1981 GL1100 Interstate (sold)
1988 GL1500

Re: coolant leak

Postby Aussie81Interstate » Thu Jul 28, 2016 4:51 pm

There is a crossover hose from one radiator to the other - and the hose is held in place by a spring clamp either end. you could replace these with screw clamps - or it could be the hose itself needs replacing. Possibly the radiator cap is not sealing and leaking a bit? Further investigation needed Sherlock :)

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Bluewaterhooker0
Posts: 556
Joined: Wed Nov 14, 2012 11:27 pm
Location: Tampa, Fl
Motorcycle: 1997 Goldwing GL 1500 SE

Re: coolant leak

Postby Bluewaterhooker0 » Thu Jul 28, 2016 5:22 pm

From your description, I would take a close look at the assembly of part #'s 8, 11, 2, and 4. Part #2, specifically, a plastic elbow, is prone to cracking. If not #2, then one of the hoses or clamps. When the radiator heats up, the expanded coolant is supposed to flow through that hose and elbow, into the reserve tank. Then on shutdown, as the engine cools, it draws the coolant back into the radiator. You will loose coolant in the radiator, eventually, after enough cycles, because the vacuum part of the sequence is pulling air instead of coolant from the tank. On the Honda parts fiche, it is listed as reserve tank. It can be had from Partzilla and the like.
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DarthJ
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Location: El Paso, TX
Motorcycle: 1993 GL1500A Aspencade

Re: coolant leak

Postby DarthJ » Fri Jul 29, 2016 2:29 pm

I replaced the elbow as a preventative, mine wasn't leaking, but was crazed with cracks. The whole thing with part 2, 6 and 4 (the elbow, plus clamp and tube) is less than $15. If you order all 3, preassemble them, then put them in the tank, the process is a hell of a lot easier than just putting a new elbow in.
If my gal ain't happy, I ain't happy. Thank God she loves bikes.

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FM-USA
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'91 GL1500-I (Dbl-Darkside)
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MADE_IT!_200K_Oct_17/2016
iRide 24/365 99% SmileMiles
================
"You don't buy yourself a
HD to be SATISFIED,...
you buy it to keep your
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================
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Re: coolant leak

Postby FM-USA » Fri Jul 29, 2016 7:20 pm

You say it's at the top of the reservoir.
. . . My rubber cap went weak and dribbled, still called a leak.
. . . To fix that leak, bought a new cap, took about a week.
. . . But alas, didn't pop that new cap on tight, just, just so.
. . . Figured out a different way not loose it again, you know.

Also it's possible a seam let loose. Can use a soldering gun to melt it closed.
"OIL CHANGE?" _FM 07-2009
Know its new taste and be loyal, you'll know when to change that oil.
Taste testing as the miles flow, souring as that acid grows.
And don't flirt with dirt or darkened oil, all the faster your engine will spoil.

roadhog63
Posts: 3
Joined: Thu Jul 28, 2016 3:52 pm
Location: Bemidji, MN USA
Motorcycle: 1990 GL1500 SE Goldwing

Re: coolant leak

Postby roadhog63 » Tue Aug 02, 2016 5:01 pm

Thanks to everyone who answered my question? I appreciate it.

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Bluewaterhooker0
Posts: 556
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Location: Tampa, Fl
Motorcycle: 1997 Goldwing GL 1500 SE

Re: coolant leak

Postby Bluewaterhooker0 » Tue Aug 02, 2016 6:43 pm

roadhog63 wrote:Thanks to everyone who answered my question? I appreciate it.


Did you find the leak ?

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FM-USA
Posts: 1999
Joined: Wed May 18, 2011 8:40 am
Location: USA-ILL-60085
Motorcycle: .
'91 GL1500-I (Dbl-Darkside)
Acquired:__51K_Jun_??/2007
MADE_IT!_200K_Oct_17/2016
iRide 24/365 99% SmileMiles
================
"You don't buy yourself a
HD to be SATISFIED,...
you buy it to keep your
HD friends PACIFIED."
================
|
ANTAGONISTS need not post.
|
==================

Re: coolant leak

Postby FM-USA » Tue Aug 02, 2016 9:43 pm

Bluewaterhooker0 wrote:
roadhog63 wrote:Thanks to everyone who answered my question? I appreciate it.


Did you find the leak ?

YA, curious here too.

Clarification to my lost CAP.
I gave up trying to pop that cap on the reservoir. Never seemed to get it all the way on, no room to properly maneuver. So I basically corked it, I used a rubber plug.
"OIL CHANGE?" _FM 07-2009
Know its new taste and be loyal, you'll know when to change that oil.
Taste testing as the miles flow, souring as that acid grows.
And don't flirt with dirt or darkened oil, all the faster your engine will spoil.

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Bluewaterhooker0
Posts: 556
Joined: Wed Nov 14, 2012 11:27 pm
Location: Tampa, Fl
Motorcycle: 1997 Goldwing GL 1500 SE

Re: coolant leak

Postby Bluewaterhooker0 » Wed Aug 03, 2016 9:57 am

FM-USA wrote:
Bluewaterhooker0 wrote:
roadhog63 wrote:Thanks to everyone who answered my question? I appreciate it.


Did you find the leak ?

YA, curious here too.

Clarification to my lost CAP.
I gave up trying to pop that cap on the reservoir. Never seemed to get it all the way on, no room to properly maneuver. So I basically corked it, I used a rubber plug.


Doesn't that cap provide venting for when the bottle receives coolant ? Or, is it vented elsewhere ? They are a tight fit. Just takes some finagling. What about the 'dip stick' for coolant level ?

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FM-USA
Posts: 1999
Joined: Wed May 18, 2011 8:40 am
Location: USA-ILL-60085
Motorcycle: .
'91 GL1500-I (Dbl-Darkside)
Acquired:__51K_Jun_??/2007
MADE_IT!_200K_Oct_17/2016
iRide 24/365 99% SmileMiles
================
"You don't buy yourself a
HD to be SATISFIED,...
you buy it to keep your
HD friends PACIFIED."
================
|
ANTAGONISTS need not post.
|
==================

Re: coolant leak

Postby FM-USA » Wed Aug 03, 2016 10:46 am

Vented via overflow tube to under the bike, left side.
I don't need a dip stick, I can see the coolants level through the semi transparent bottle.
"OIL CHANGE?" _FM 07-2009
Know its new taste and be loyal, you'll know when to change that oil.
Taste testing as the miles flow, souring as that acid grows.
And don't flirt with dirt or darkened oil, all the faster your engine will spoil.

roadhog63
Posts: 3
Joined: Thu Jul 28, 2016 3:52 pm
Location: Bemidji, MN USA
Motorcycle: 1990 GL1500 SE Goldwing

Re: coolant leak

Postby roadhog63 » Wed Aug 03, 2016 11:07 am

Still can't find where the leak is really coming from. I pressed and released my radiator cap a few times, it was very stiff for a system of 13 psi or so. After doing so I went for a 35 minute ride, stopped and check for leaks. Didn't see anything until I got home and there was only a couple of drops and quit. I ordered a new radiator cap.

User avatar
FM-USA
Posts: 1999
Joined: Wed May 18, 2011 8:40 am
Location: USA-ILL-60085
Motorcycle: .
'91 GL1500-I (Dbl-Darkside)
Acquired:__51K_Jun_??/2007
MADE_IT!_200K_Oct_17/2016
iRide 24/365 99% SmileMiles
================
"You don't buy yourself a
HD to be SATISFIED,...
you buy it to keep your
HD friends PACIFIED."
================
|
ANTAGONISTS need not post.
|
==================

Re: coolant leak

Postby FM-USA » Wed Aug 03, 2016 10:25 pm

What I have read on other sites is, filling the radiator and overflow bottle the Wing will eventually find its happy level. The system has to BURP.

All water cooled vehicles do this but goes unnoticed unless it's in there driveway.
.


"OIL CHANGE?" _FM 07-2009
Know its new taste and be loyal, you'll know when to change that oil.
Taste testing as the miles flow, souring as that acid grows.
And don't flirt with dirt or darkened oil, all the faster your engine will spoil.


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