GL1500 auto fuel valve problem


Information and questions on GL1500 Goldwings (1988-2000)
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wishbone63
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GL1500 auto fuel valve problem

Post by wishbone63 » Tue Jan 26, 2016 2:31 pm



I have a GL1500 and the auto fuel petcock valve is shooting gas out a little hole on the bottom of the valve as it sits above the tank. Can this be fixed or do I need a new valve?



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wingman12
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Re: GL1500 auto fuel valve problem

Post by wingman12 » Tue Jan 26, 2016 3:15 pm

good afternoon, there is a petcock rebuild kit on Cyclemax for $23.00 I wish I had know this when mine went back several years back. The petcock is expensive from mother Honda but a reasonably easy repair. see this link http://cyclemax.com/inc/sdetail/gl1500_ ... 8744/20457 . :D :D

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WingAdmin
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Re: GL1500 auto fuel valve problem

Post by WingAdmin » Tue Jan 26, 2016 3:25 pm

There is a diaphragm inside it that is used to operate a valve that controls fuel flow. If the diaphragm wears out/cracks, gasoline can come out the bottom like you're seeing. The Cyclemax repair kit is a simple fix.

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wishbone63
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Motorcycle: 1983 Honda Goldwing interstate, Honda CRF 250F, Honda XR600R.

Re: GL1500 auto fuel valve problem

Post by wishbone63 » Tue Jan 26, 2016 7:13 pm

Thanks! I will pick up the rebuild kit.

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wingman12
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Re: GL1500 auto fuel valve problem

Post by wingman12 » Tue Jan 26, 2016 8:27 pm

please us know how the repair goes, :D :D

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Charlie1Horse
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1992 GL1500I Interstate

Re: GL1500 auto fuel valve problem

Post by Charlie1Horse » Tue Jan 26, 2016 10:02 pm

Here you can find a rebuild kit for $21.95. http://www.goldwingonline.com/index.php. I bought one for mine and it was really straight forward, easy after removing the radio. Replace the fuel filter while you are in there, it's right beside the fuel shutoff valve, sale price $5.95.
Russell

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wishbone63
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Motorcycle: 1983 Honda Goldwing interstate, Honda CRF 250F, Honda XR600R.

Re: GL1500 auto fuel valve problem

Post by wishbone63 » Tue Feb 02, 2016 11:44 am

I bought a rebuild kit from amazon, installed it and no more fuel valve problem. The cost on Amazon was $21.00.

AndyFromWI
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Motorcycle: 1997 GL1500SE

Re: GL1500 auto fuel valve problem

Post by AndyFromWI » Mon Feb 13, 2017 8:09 am

Suggestion, test the rebuild before you install.

I also purchased a rebuild kit from amazon, the rubber diaphragm was bent because of the way it was folded before it was inserted into the packaging. I did not think it was going to be a problem once installed. I rebuilt the auto fuel valve, re-installed, and the bike started. A week later I could not start the 1997 gl1500 SE, spent a lot of time troubleshooting.. Finally I removed the auto fuel valve, but I did not have a pressure tester, I almost ordered one, then thought.... DUH, just do a simple test.

So here is the test, put a small hose on the small nipple, see if you can suck and it locks, you can put your tongue, on the end of the hose and if the diaphragm is working correctly it should hold suction. Note be gentle, it just takes a little.

In my case, I tried this test and it failed. As I understand it, the valve is designed to BLOCK fuel flow from the Tank (via the fuel pump), into the carburetor, when there is NOT suction. Once you have suction in the small nipple, this opens the valve and fuel can flow.

I re-opened the valve, re-seated the parts, put it back together and the suction test worked.
Then for a second test, I applied suction to my little tube, bent the tube to seal the suction, then tested putting pressure on the outer larger nipple (input from the fuel tank), the valve was open.
Once I released the suction, applied pressure on the outer larger nipple, pressure was felt, and the valve was closed...... The valve worked this time.

Here is a screen shot of testing vacuum with a small hose.

I could have saved a lot of time and trouble if I would have simply tested this first.

One other suggestion, take pictures when you pull the unit apart. It would be easy to install something in the wrong direction.
-andy
Attachments

small hose to test vacuum, be gentle
small hose to test vacuum, be gentle


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shomann
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Re: GL1500 auto fuel valve problem

Post by shomann » Mon Feb 13, 2017 10:23 am

This should help


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joeincalif
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Re: GL1500 auto fuel valve problem

Post by joeincalif » Mon Feb 13, 2017 10:30 am

You can by pass the auto shut off valve in an emergency by taking off the hose that goes into the valve and connecting it directly to the fuel filter. The first 1500 wings did not have that valve but if the fuel tank was full when you parked the bike gas would leak into the cylinder. So Honda added the ASO valve.


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