Fuel pump relay - What is this?


Information and questions on GL1100 Goldwings (1980-1983)
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maritimeboy
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Location: Fredericton, New Brunswick
Motorcycle: 1980 GL1100

Fuel pump relay - What is this?

Postby maritimeboy » Fri Sep 30, 2016 9:19 pm



Having suspected fuel issues and seen this mentioned. '80 GL11 has a mechanical fuel pump, right?

Cheers


Some days your the statue, some days your the Pigeon!

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virgilmobile
Posts: 7660
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Fuel pump relay - What is this?

Postby virgilmobile » Fri Sep 30, 2016 9:24 pm

Yes it came with a mechanical fuel pump.So did the GL1000.The 1200 was outfitted with a electric pulse pump...The 1500 has the submersed fuel pump in the tank.

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virgilmobile
Posts: 7660
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Fuel pump relay - What is this?

Postby virgilmobile » Fri Sep 30, 2016 9:25 pm

What "issues" are you having?

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virgilmobile
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Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Fuel pump relay - What is this?

Postby virgilmobile » Fri Sep 30, 2016 9:29 pm

Also keep in mind that(just like me)somebody may have replaced it with a electric one.

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maritimeboy
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Re: Fuel pump relay - What is this?

Postby maritimeboy » Fri Sep 30, 2016 9:31 pm

Both coils were severely split so I installed new ones. Assuming that was my issue, my chin hit the ground when I tried to start it. Cold start and full choke, it fired right up at about 3. As it warmed up I gradually closed the choke and it died after a couple if minutes...as it did before the coil change. When it did run, it was smoother.

Any thoughts?

Cheers
Some days your the statue, some days your the Pigeon!

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maritimeboy
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Joined: Sat Sep 10, 2016 8:31 pm
Location: Fredericton, New Brunswick
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Re: Fuel pump relay - What is this?

Postby maritimeboy » Fri Sep 30, 2016 9:35 pm

virgilmobile wrote:Also keep in mind that(just like me)somebody may have replaced it with a electric one.

Looks like a mechanical. Don't see any wires to it.
Some days your the statue, some days your the Pigeon!

User avatar
virgilmobile
Posts: 7660
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Fuel pump relay - What is this?

Postby virgilmobile » Fri Sep 30, 2016 9:57 pm

I will ask a few questions.
After it died..were you able to restart it right away or did it take much cranking.?

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virgilmobile
Posts: 7660
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Fuel pump relay - What is this?

Postby virgilmobile » Fri Sep 30, 2016 10:14 pm

To determine the problem,you will need to identify what area the problem is at...Either electrical or fuel..
Electrical is easiest to check..Have a spare spark plug handy..When it quits pull one plug wire , attach the spare plug , crank it over and check for good spark..
Fuel is a bit harder...Get farmiliar with one of the carb fuel drain screws...You would run the bike till it quits again...Shut off the fuel valve at the fuel tank and open the carb drain screw....Capture and see how much fuel is in the carb when the bike dies...As I recall..each carb holds about a full shot glass of fuel.
Once you determine why it quits , they you can isolate that system...
Fuel pump problems can be isolated by using an elivated ( 3-4 feet above the carbs) fuel supply gravity feeding the carbs directly.
Often a clogged fuel filter will starve the carbs of fuel , just as a failing pump or clogged screen in the fuel tank.
Each one can be bypassed with a seperate fuel supply for testing.




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