Antifreeze leak,,,,


Information and questions on GL1500 Goldwings (1988-2000)
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DenverWinger
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Re: Antifreeze leak,,,,

Post by DenverWinger »



Sassy wrote: Tue Dec 08, 2020 11:55 pm
DenverWinger wrote: Thu Dec 03, 2020 6:40 pm If left sitting for a few weeks (especially in cold weather) mine leaks a little - just a tiny puddle on the garage floor. But if you start it up, as soon as the engine warms up just a little the leak is gone, not to be seen again unless left sitting again.

Been like that since I've had it. As long as it doesn't get any worse I guess I won't worry about it, I just top off the reservoir once in the spring. (it leaks that little).
Is that little drip close to the front of the motor and left of center when on centerstand?
Fred
Not sure, generally don't see a leak. Noticed a small puddle last week, but bike was on the side stand. I've got all four bikes (My 2 wings and Deb's 2 Viragos) all packed into the left side of the garage on their side stands so I have room to get the Pontiac in/out to work on it. It has been giving significant grief (coolant leaks, co-incidentally) lately. :shock:

First time I noticed the leak, almost three years ago, the bike was on center stand, and I noticed a little trail of drips as I backed out of the garage. This was in the spring, first start in many weeks. It appeared to be from the front, roughly center of the engine. But hard to say because I was ON the bike backing it out. With the bike backed into the alley on side stand, warming up, I went back to the garage to get my helmet, noticed it wasn't dripping anymore. I figured I'd ride around the neighborhood 10 mins or so to warm up the engine nicely to get some pressure in the cooling system, then come back to see if I could ID the leak. Of course when I got back home it wasn't leaking. :roll:

I haven't made any effort to run down where the drip is coming from since it doesn't leak when warm or running, only when parked cold. I've only noticed a little puddle maybe a half-dozen times in three years. Never any steam or coolant smell while riding...

Knowing what a PITA these 1500s are to get into where all the coolant-related pieces-parts are, and the bike is currently running to perfection, I have pretty much decided to ignore the leak unless it becomes a problem or I have other reason to go in there.

Evidently your leak has reached "problem" status.... :cry:

As to the video with the antifreeze drip from the head, my 2¢ goes along with what others have said, probably NOT the head gasket. Head gasket leaks on 1500 are extremely rare, and most head gasket leaks (primarily on the 4cyl wings) leak to the combustion chamber and not to external. My guess is the coolant is coming from top-side somewhere (you showed "Long Lake") and just running on the edge of the head gasket in the gap between head and block to drip off the bottom like you see in the video.

I've been running down numerous coolant leaks in Deb's Pontiac. You might find this helpful: Auto parts stores sell U/V coolant dye and ultraviolet flashlights, add the dye directly to the radiator (might need to siphon a little coolant out if filled to the cap). Go take a ride to mix the dye in good. This dye glows a nice fluorescent when you shine the U/V flashlight on it.

You can rent a radiator pressure tester to connect in place of the radiator cap, or what I'm doing on the Pontiac is disconnect the hose from the coolant recovery tank and using the "Blow" attachment on my air hose (with pressure regulator set to 12psi) backfill pressure into the radiator thru the coolant recovery hose.

I didn't mean to hijack the thread, just adding my experiences with coolant leak. :)


♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark
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Re: Antifreeze leak,,,,

Post by WingAdmin »

The O-rings on the coolant crossover pipes are also a popular place for leaks to occur, and when they leak, it drips down onto the top of the engine.
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DenverWinger
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1972 CL350 (1980-1988) sold
1978 Suzuki GS550 (1985-2005) sold
1977 GL1000 (2002-2006) sold

Re: Antifreeze leak,,,,

Post by DenverWinger »

I might add you may have more success using a pressure tester on COLD engine to find leaks that stop when the engine warms. :ugeek:
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark
Sassy
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Re: Antifreeze leak,,,,

Post by Sassy »

Thanks for all the input guys!
Will be back at it in a day or two
Fred
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Re: Antifreeze leak,,,,

Post by Sassy »

WingAdmin wrote: Wed Dec 09, 2020 9:47 am The O-rings on the coolant crossover pipes are also a popular place for leaks to occur, and when they leak, it drips down onto the top of the engine.
I did notice that the bright work on the pipe above the "long Lake" looked a bit stained.
Once I get more skin off the bike I'm sure the problems will present them selves.
Fred
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ct1500
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Re: Antifreeze leak,,,,

Post by ct1500 »

Sassy wrote: Wed Dec 09, 2020 1:28 pm
Once I get more skin off the bike I'm sure the problems will present them selves.
Fred
You really need to pull the fans out and with aid of inspection mirror to see all areas. If you don't have a pressure tester, start engine while fans are out and run long enough watching temp gauge warming engine up to pressurize cooling system.
The most common leak area is around thermostat housing and if leaking there REPLACE for added insurance the plastic thermostat outlet as they warp.
Local and need repair help with your 1500, Valkyrie or ST please click contact
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Sassy
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Re: Antifreeze leak,,,,

Post by Sassy »

Yes!,,, last time I was crawling around that thing I thought :idea: "I need a dentist mirror"
k, I was thinking the fans should come out.
May be able to do more tomorrow.
Fred
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Elmobile
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Re: Antifreeze leak,,,,

Post by Elmobile »

I replied earlier that I ran into the same issue: thermostat housing leaking. I obviously replaced the seal and I resurfaced the housing. No issues since last March until about 2 weeks ago... We had a very cold night here in Nova Scotia where the temperature deepened to -10C (14F) and guess what; I had a small puddle of green fluid under the bike! :shock:
So if you ever get to do this job, please, follow CT1500 advice and replace the housing. Considering what a bear this job is, it will be money well invested. I see how mine goes next summer before I get into that AGAIN...
Note that I had to remove the fans and warm up the engine to actually clearly see where the leak was...
Cheers.
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Re: Antifreeze leak,,,,

Post by Sassy »

Thank you for the update/ advice.
Fred
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Re: Antifreeze leak,,,,

Post by Sassy »

Pulled the fans out today, somebody else has been in here, wrong bolts, wire connectors not properly located etc.
Tomorrow will start and run up the temp.
Fred
Last edited by Sassy on Thu Dec 10, 2020 11:26 pm, edited 1 time in total.
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ct1500
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Re: Antifreeze leak,,,,

Post by ct1500 »

Sassy wrote: Thu Dec 10, 2020 6:06 pm Pulled the fans out today, somebody else has been in here, wrong bolts, wire connectors not ptoperly located etc.
Tomorrow will start and run up the temp.
Fred
You don't know what you're up against until the plastic comes off these things. :(
Local and need repair help with your 1500, Valkyrie or ST please click contact
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This is what I do
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Re: Antifreeze leak,,,,

Post by Sassy »

This morning after tightening the hose clamp on the thermostat housing maybe a turn and
a bit everything dried up.
Went back this afternoon ran the temps up again no vapour nothing! So, just a loose clamp!
Guess I'll do the belt change and watch for any green stuff.
Where it leaked on the head in the video still bothers me but been nothing since. I will post back here when I get the chance to ride it.
Spring?

Thank you all for your guidance and advice.
Fred



Forgot the before pic


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Re: Antifreeze leak,,,,

Post by WingAdmin »

The simple fixes are always the best!
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Re: Antifreeze leak,,,,

Post by Sassy »

So I guess it is more than a loose clamp. After leaving it sit for a week waiting for parts to install the cam belts long Lake is back, there's a puddle below the stat housing and the stat housing is wet again. So back to the parts counter for a stat housing and gasket,, and I'll try again.
I thought dogs and Harleys marked their spot, that isn't really a club I want to be part of.
Fred






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Re: Antifreeze leak,,,,

Post by Sassy »

Hey guys, phoned the Honda dealership this am to order the stat housing and gasket snd they said the housing is NLA!
Has anyone else experienced this problem or is it a
Canada thing?
Fred
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4given
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Re: Antifreeze leak,,,,

Post by 4given »

It looks like it is available from Cyclemax.
“Fight the fight and do what is right“
Sassy
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Re: Antifreeze leak,,,,

Post by Sassy »

Thank you!
Ordered,,,, only 76$ CDn!!!
Not including gasket, found one here.
Fred
jdn40
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Re: Antifreeze leak,,,,

Post by jdn40 »

funny you should bring this up . i just noticed a very small leak ( maybe a drop or two ) started on my 96 . m thinking the cold weather has something to do with it .
rstoops1
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Re: Antifreeze leak,,,,

Post by rstoops1 »

Over the past three, or four years I have noticed an anti-freeze odor sometimes when 2001 1800A is running. There is no water loss, nor are there any signs of leaking. This past summer I tore it down to the bare bones, all plastic panels were removed. I could find no signs of leakage at all. Everything was clean and tight. Beats the heck out of me what's going on so I'm not going to worry about it until something obvious shows up.

Some of these things can drive you crazy if you let them.
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newday777
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1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

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1999A Restored from PO neglect & sold at 19,000 miles

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Re: Antifreeze leak,,,,

Post by newday777 »

rstoops1 wrote: Fri Jan 01, 2021 7:58 am Over the past three, or four years I have noticed an anti-freeze odor sometimes when 2001 1800A is running. There is no water loss, nor are there any signs of leaking. This past summer I tore it down to the bare bones, all plastic panels were removed. I could find no signs of leakage at all. Everything was clean and tight. Beats the heck out of me what's going on so I'm not going to worry about it until something obvious shows up.

Some of these things can drive you crazy if you let them.
Did you remove the gas tank to access the hose clamps? That is where they are on the 1800s and how to access them.
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marks146
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Re: Antifreeze leak,,,,

Post by marks146 »

What a coincidence. I'm having the same exact issue. I started smelling coolant steam shortly after I changed the timing belts this summer. I thought I must have spilled coolant on the engine when I was refilling the system, so I tried to ignore it hoping it would go away. It didn't go away. As a matter of fact I started seeing a couple of drips on the floor under the bike as the temps dropped here in Pennsylvania. So I'm very interested in what you find.

I have most of the side plastics off because I am doing the dash and radio lights and a couple of filters. I just finished putting Progressive springs, seals and all balls front wheel bearings in.

I got the bike for what I thought was a low price ($2000 w/75,000 miles) but I probably have half that much more into it. I won't go into the grocery list of things I've changed to make it like new. I have aspirations of taking extended trips on it so I want it near perfect as I can get it.

And WingAdmin, you've been a fantastic mentor and teacher throughout. Thank you sir.

So back to the coolant leak. I just ordered two O-rings for the pipes. I'll be going over all the hose clamps when I get to the cruise and sub-filters after the temps rise. It's cold in my garage. :(
-- Mark

1994 GL1500 Aspencade, 2013 Suzuki C50T
Sassy
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Re: Antifreeze leak,,,,

Post by Sassy »

I realize the small leaks you guys are talking about really aren't a problem as long as the fluid levels are
monitoured. Its the odour, I dont like it and the wife, whom I trying to get back riding would hate it.
I haven't received parts yet to do the thermostat cover but I want to do that while it is still cold so I can heat cycle the motor to see if the problem is solved.
I'll post a pic later where Im working, you wont feel so bad,, lol.
Fred
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newday777
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Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
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1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Antifreeze leak,,,,

Post by newday777 »

marks146 wrote: Sun Jan 03, 2021 3:00 am What a coincidence. I'm having the same exact issue. I started smelling coolant steam shortly after I changed the timing belts this summer. I thought I must have spilled coolant on the engine when I was refilling the system, so I tried to ignore it hoping it would go away. It didn't go away. As a matter of fact I started seeing a couple of drips on the floor under the bike as the temps dropped here in Pennsylvania. So I'm very interested in what you find.

I have most of the side plastics off because I am doing the dash and radio lights and a couple of filters. I just finished putting Progressive springs, seals and all balls front wheel bearings in.

I got the bike for what I thought was a low price ($2000 w/75,000 miles) but I probably have half that much more into it. I won't go into the grocery list of things I've changed to make it like new. I have aspirations of taking extended trips on it so I want it near perfect as I can get it.

And WingAdmin, you've been a fantastic mentor and teacher throughout. Thank you sir.

So back to the coolant leak. I just ordered two O-rings for the pipes. I'll be going over all the hose clamps when I get to the cruise and sub-filters after the temps rise. It's cold in my garage. :(
Welcome to the forum and the wing Mark.
Sounds like you've been busy on your wing and digging right in on it. I understand the cold garage having grown up in the cold garage country of NH and on occasion have spent a couple more winters up there when I've needed to..... :?
The 1500 is a fine bike to tour on, I did a couple cross country trips on my 99 before it's demise and I upgraded to my 08. Keep this updated here(bookmark it) to what you find your leak is, as that will help others later who come across this thread using the search tool. Keep warm and happy new year to you.
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newday777
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1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Antifreeze leak,,,,

Post by newday777 »

Sassy wrote: Sun Jan 03, 2021 9:26 am I realize the small leaks you guys are talking about really aren't a problem as long as the fluid levels are
monitoured. Its the odour, I dont like it and the wife, whom I trying to get back riding would hate it.
I haven't received parts yet to do the thermostat cover but I want to do that while it is still cold so I can heat cycle the motor to see if the problem is solved.
I'll post a pic later where Im working, you wont feel so bad,, lol.
Fred

Fred
You do have, according to your video, a lot of steam which is unusual along with the "lake" puddle, so I understand your concern (and the possibility of the wife's too).

As WingAdmin mentioned look also at the cross over coolant tubes on top of the heads(thin aluminum w/ orings on either end) as orings, #25 & 26 on them could be your leak spot and there are 2 small hoses going to the carbs to heat the carbs that if someone worked on the carbs and didn't get them on properly or pinched the lines could be leaking down on the cylinders???

These 6 cylinder wings are intriguing and complex, Honda started the development of them long before the 1988 release of the 1500. I remember back in 1976 when I was a young lad of 20 working in the parts department seeing the picture from 1972 of the M1, the development of the 6 cylinder bike Honda was working on. My thoughts then, as I was thoroughly enamored with my 750/4 at that point were, why the heck would anyone need a 6 cylinder bike of 1500 cc???? I hadn't even done a cross country ride outside of New England at that point either....
I certainly didn't have an engineering mindset nor the forethought that Mr Honda did, which were always way ahead of the times.
https://www.motorcyclecruiser.com/cruis ... -timeline/
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Sassy
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Re: Antifreeze leak,,,,

Post by Sassy »

Newday777, thanks for the link. Great read on the
6 cyl history!
Mark, at least you got a garage,,,,,
My work area,,




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