Fuelindication


Information and questions on GL1000 Goldwings (1975-1979)
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grandpa
Posts: 73
Joined: Sat Aug 07, 2010 3:23 pm
Location: Denmark
Motorcycle: 1978 GL1000 Interstate

Fuelindication

Postby grandpa » Sat Jan 15, 2011 9:08 am



Hi
On my 1978 GW I have something going on with the fuelindicator. When I top up the fueltank the instrument showes full. When I start driving the instrument rather quick goes down to reserve. But When I top up the tank again I can only put about 2 gall/8-10 liter.

Does someone out there know about what to do or doe's someone have the ohms for the fuelsystem so I can simulate feks. empty - half full - full tank. :?:

I have empty the tank via "main" supply and when I turned the handle to Reserve nothing happend. I can se there is still fuel in the tank. I would like to remove the fuel tap but is it posible without damage the gaskit and do I have to be carefull in a special way.

I can tell that fuel does NOT taste well. :mrgreen:

Grandpa.



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WingAdmin
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Posts: 17050
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Fuelindication

Postby WingAdmin » Sat Jan 15, 2011 10:51 pm

A quick question - is your temperature gauge also misbehaving?

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grandpa
Posts: 73
Joined: Sat Aug 07, 2010 3:23 pm
Location: Denmark
Motorcycle: 1978 GL1000 Interstate

Re: Fuelindication

Postby grandpa » Sun Jan 16, 2011 4:12 am

Hi
I know what you are thinking about. The 7 volt regulator.
The temp indicator is under normal operation in the lover end of the scal but if I park the bike and let the engine on, the temp indication will rise to about 3/4 and then fall a little back again which I think is normal when the fan turns on.

But I will of course check the 7 volt regulator.

And in the manual I have the ohms figure for the tempindicator so I will check that out as well.

Any ideas why I cant get the reservefuel out of the tap.

Have a nice weekend, and happy birthday, just a little late.

Grandpa.

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grandpa
Posts: 73
Joined: Sat Aug 07, 2010 3:23 pm
Location: Denmark
Motorcycle: 1978 GL1000 Interstate

Re: Fuelindication

Postby grandpa » Sun Jan 16, 2011 8:14 am

Hi again.
I found the 7 volt regulator. It was placed and screwed to the botton of the temp and fuel indicator. I checked it and the result was 7.10 volt which should be okay.
But at the same time I checked the 12 volt supply and that was only 10,8 volt and checkin the battery I had 12,4 volt.

This tells me that the regulator is OK but there is heavy resistens( lose connection, bad connection etc.) which can create a voltages drop of almost 2 volt with that little drawn power. But that is an other challenged. Maybe also why I got the bike cheap. But I new there was some electrical problems when I bought it.

Brgds Grandpa :D

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dingdong
Posts: 2865
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Fuelindication

Postby dingdong » Mon Jan 17, 2011 9:20 am

One of the biggest problems and the most over looked problem with the old Wings is loose and corroded electrical connectors. Might as well get started cleaning and tightening.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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WingAdmin
Site Admin
Posts: 17050
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Fuelindication

Postby WingAdmin » Mon Jan 17, 2011 10:14 am

Your temperature gauge sounds like it is operating normally. I'd have a look at the fuel sender.

For the 1978 GL1000, the sensor should read 70-90 ohms when the tank is empty, and 3-10 ohms when the tank is full.

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grandpa
Posts: 73
Joined: Sat Aug 07, 2010 3:23 pm
Location: Denmark
Motorcycle: 1978 GL1000 Interstate

Re: Fuelindication

Postby grandpa » Tue Jan 18, 2011 7:44 am

Hi.

I just checked the fuelsender. Full 7 ohm and empty 83 ohm. Sounds ok. I also checked if there is some break in between but no failure. I connectet the sender to the system and checked the indicator. It seem to work ok. But at the same time I have found very poor connection. So now I puy all together an see what happend.

Dingdong, you are shure right. I have found a lot of not only poor but very poor connection. Mostly spade connection.

During this operation I also foundout that voltageregulator is removed. The connectors where wrapped in tape, so now I have to figure out how the voltage is regulatede. And there is instaled a rectifiren which is not original.
It is an E20263 SCHNABEL, 12V 3phase, Regulator/Rectifire. There are 3 yellow to the stator and Black(ground) Red( Plus)
I can't find anything on the net about it so anny information will be helpfull. :?:




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