GL1800 Fuel filler cap "blow back" "volcano" - Steve Saunders Goldwing Forums
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post #1 of 12 (permalink) Old 03-29-2012, 03:37 PM Thread Starter
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Hi,



Very, VERY happy new owner of a 2012 GL1800. Last weekend we went for our first longer ride. I stopped for fuel as I was down to 1/4, and when I opened the filler cap along with a hiss came a couple cups of gasoline! I was suprised, my wife was shocked...



Has anyone else experience this?



Is there a "fix"?



Is it a problem that Honda or my dealer needs to address?



Thanks in advance.

-AL
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post #2 of 12 (permalink) Old 03-29-2012, 04:00 PM
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That seems about normal to me Al. Nothing to worry about.
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post #3 of 12 (permalink) Old 03-29-2012, 04:03 PM
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My 2005 has never done that

The cap is vented.

New bike, take it back to the dealer!!

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post #4 of 12 (permalink) Old 03-29-2012, 05:04 PM
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It blew gas out of the tank?

If so, that's odd... Motorcycles historically have a Vacuum in the tank... In contrast, modern cars have Pressure in the tank.

My 2008 Piaggio MP3-500 has a Pressurized tank... It sometimes does the same thing as yours, actually Blowing the gas gap several feet into the air when you open it! <Blam!>


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Front: Bridgestone Battlax BT45, 41psi
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post #5 of 12 (permalink) Old 03-29-2012, 05:19 PM
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I misread your initial post Al, didn't see the bit about gas coming out of the tank. I thought it was just the usual hiss of pressure.
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post #6 of 12 (permalink) Old 03-29-2012, 05:22 PM
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Get your gas cap checked.

The valve in the cap is designed to keep a slight vacuum in the tank, but then allow air into the tank when that pressure gets too high, it also allows pressure to escape through the same valve as cold gas heats up and expands (or starts boiling).

kind of the same way that the radiator cap works.

My gas cap started making a loud buzzing or screaming noise after the bike was parked, A couple of rounds with some cleaner in the valve inside the cap stopped that though.

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post #7 of 12 (permalink) Old 03-29-2012, 08:32 PM
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Welcome to the forum al.ott
And congradts on the new wing.
The winter fuel mix being sold still, boils in the tank when it is warm temps out and a hot engine from riding in traffic. Thus will cause the extra pressure in the gas tanks right now till they switch to the summer blend. There are a number of posts on this around the country from the unusually warm winter and many getting their bikes out for a ride in the warm weather.
Tell the dealer about it, they may check the cap to be sure it is functioning properly.

Stu
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post #8 of 12 (permalink) Old 03-29-2012, 11:00 PM
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newday777 wrote:
Quote:
Welcome to the forum al.ott
And congradts on the new wing.
The winter fuel mix being sold still, boils in the tank when it is warm temps out and a hot engine from riding in traffic. Thus will cause the extra pressure in the gas tanks right now till they switch to the summer blend. There are a number of posts on this around the country from the unusually warm winter and many getting their bikes out for a ride in the warm weather.
Tell the dealer about it, they may check the cap to be sure it is functioning properly.
Never heard of such a thing..and I ride in Colder than you can believe Michigan, where the weather changes often.

Al..that IS a problem!

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post #9 of 12 (permalink) Old 03-29-2012, 11:31 PM
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I started riding in NH in the 70's and was there(NH) last fall for the 2' snow storm and then rode back here mid Nov, arriving Dec 1st. I know what cold riding is bro, and I do agree he needs to go to the dealer.
As far as the posts go, do a forum search. Lots in the past couple weeks.
https://www.goldwingfacts.com/forums/...re+in+the+tank
https://www.goldwingfacts.com/forums/...re+in+the+tank

Stu
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John 14:6 Psalm 118:19-29
CMA Wings of Eagles-Escondido, Patriot Guard Ryder
+2008 Cabernet Red ABS/Airbag bought 6/2013 @16,000
+1983 ASPENCADE Barn find @36,000 to be sold
+1976 CB750K6 @25,000 was Dad's
Previous bikes
-1999 GL1500 ASPENCADE Red Sold barn find restored
-1999 GL1500 SE(@57k)(totaled by cagger @105,000) Feb 2013
-76 CB750K Red(new) sold @ 45k
-75 CB750K Blue(new) 9,000 mi Before cousin totaled it.
74 CB450 Burnt Orange(new) 9,000 miles sold
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post #10 of 12 (permalink) Old 03-30-2012, 11:59 AM
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I would bring it back to the dealer as mentioned something is wrong for sure your building up way to much pressure.

Winter blend will release more fumes as its designed to do as its not made for warmer weather as mentioned.

And they didn't even start making summer blend yet,cant wait to see the price per gallon this summer.:ac tion:

I have done so much with so little,I can do anything !!

08 gl1800
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