Power loss and almost died: 300+ mile trip 1997 GL1500 - Page 2 - Steve Saunders Goldwing Forums

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post #11 of 18 (permalink) Old 11-25-2018, 11:32 PM
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Originally Posted by tlbranth View Post
Hmmmmm!

Actually, after the first incident last year I put in a new filter and checked the old. There was nothing in it. Good idea though.
Might be the screen in the tank?????????

Mike

Worked on the "big rigs" for 45 years now just riding my Wing whenever I can. Gets cold in Wisconsin.
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post #12 of 18 (permalink) Old 11-26-2018, 10:45 AM
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Perhaps water, but I would also look at the vacuum lines and the vacuum fuel shutoff valve.

+1... If it happens again, then by-pass the Fuel Shutoff Valve... Those things seem to always go bad


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GL1500, 1990SE, 220k miles
Front: Bridgestone Battlax BT45, 41psi
Rear: Austone 175R16, 50psi

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post #13 of 18 (permalink) Old 11-26-2018, 11:39 AM
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+1... If it happens again, then by-pass the Fuel Shutoff Valve... Those things seem to always go bad
You mean the petcock? I would expect that to just plumb fail. Or could it screw up sporadically?

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post #14 of 18 (permalink) Old 11-26-2018, 01:20 PM
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Originally Posted by tlbranth View Post
You mean the petcock? I would expect that to just plumb fail. Or could it screw up sporadically?

...yes "Petcock". They can "partially" fail, or "totally" fail.


The internal rubber diaphragm goes bad, and/or the vacuum source (to operate it) is bad/weak/intermittent.


They just suck, really... cause more harm than good


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GL1500, 1990SE, 220k miles
Front: Bridgestone Battlax BT45, 41psi
Rear: Austone 175R16, 50psi

GL1800, 2003, 60K miles [following virginity reconstruction]
Front: Bridgestone Battlax BT45, 41psi
Rear: Pirelli Winter Snowcontrol Series3, Run Flat, 41 psi
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post #15 of 18 (permalink) Old 11-26-2018, 02:59 PM
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Originally Posted by ALEX BERECZKY View Post
...yes "Petcock". They can "partially" fail, or "totally" fail.


The internal rubber diaphragm goes bad, and/or the vacuum source (to operate it) is bad/weak/intermittent.


They just suck, really... cause more harm than good



personally, that should have been an electric fuel shutoff valve from the factory.


because it will not open until the engine creates vacuum.
that wastes the first two revolutions of the engine.

~ John


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post #16 of 18 (permalink) Old 11-26-2018, 06:57 PM
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Well I did pick up a repair kit some time ago. Maybe I should just put it on.

Terry

Don't own a Vanagon.
Don't work at Boeing.
Life is good.

1970 CB750
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2002 VT750
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post #17 of 18 (permalink) Old 06-26-2019, 10:39 AM
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Reporting back - I saw a list of symptoms for bad petcock on GoldwingDocs, one of which matched mine i.e. engine dies and then restarts and continues running. So I rebuilt the petcock with a Showchrome kit and have had no problems since. I just concluded a 2500 miler without a hiccup. The old diaphragm was not torn but was a bit limp which, it seems, would account for the symptoms.

Terry

Don't own a Vanagon.
Don't work at Boeing.
Life is good.

1970 CB750
1975 GL1000
1999 GL1500 SE
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post #18 of 18 (permalink) Old 06-27-2019, 04:55 AM
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Originally Posted by redwing52 View Post
Was just reading Terry's post and a thought came to mind. I have no idea if it is a valid solution in either case but just some old fashion comm9n sense. If you assume there is some debris in the gas tank it would lay pretty much harmless at the bottom. When you fill the tank the fuel rushing in could churn up the debris and put it temporarily in suspension. The sreen on the end of the pick up tube or filter could filter it out and restrict or stop the flow of fuel. The pressure would hold the bebris in place. When the bike dies or a long decel or idle would allow the debris an opportunity to drop off anf fall harmlessley back to the bottom of the tank. I would think it would be more likely when you are filling a really low tank, but maybe not?? Just something else to consider.
I saw that exact problem once in a car. Would lose power, then die, but when restarted would usually be fine for a while. After checking the usual suspects and noticing it had a brand new fuel cap, I dropped the tank and found a blue service station paper towel in the tank. No doubt someone's idea of a make shift gas cap at one time.
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