GL1200 Fuel pump test

Information and questions on GL1200 Goldwings (1984-1987)
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Posts: 9
Joined: Sun Sep 11, 2011 11:21 pm
Location: ashland, va.
Motorcycle: 1986 GL1200 Aspencade

GL1200 Fuel pump test

Postby hondavidson » Wed Oct 05, 2011 3:31 pm

I have been rebuilding my 86 GL1200A. I had the carbs rebuilt at shop and was started and running wuth an IV to the carbs. I had a rust problem with tank and since have cleaned all out and ran gas from tank until all clear. Problem is that when I hook to gas line and try to start the gas doesn't flow. Should the fuel pump come on when key is on? If I run test leads directly from the battery to the fuel pump shouldn't it come on? When I did it nothing happened. I figured I would do a direct test to the pump before going to the relay.

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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: GL1200 Fuel pump test

Postby virgilmobile » Wed Oct 05, 2011 4:14 pm

The electric fuel pump only has electric from the bike while the engine is cranking or running.It is a pulse type,meaning it goes ...thump thump thump.
Apply 12 volts direct to it and it should start thumping away.You must include the ground wire.The pump is grounded inside but is rubber mounted to the bike.
If it doesn't....2 things may have happened..It burned up or the contacts are contaminated.
One screw under the rubber cap will release the cover and expose the switch.
It is activated by a center rod.
I have posted some info about it here...viewtopic.php?f=12&t=8642

normal resistance between the 2 wires is about 2-3 ohms.Operate the center rod with a pair of needle nose in and out to see the switch contacts operate.

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