Fuel pump problem ...


Information and questions on GL1200 Goldwings (1984-1987)
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gery73
Posts: 6
Joined: Fri Jun 05, 2020 6:34 am
Location: Poland
Motorcycle: Gł 1200 Interstate 1985

Fuel pump problem ...

Post by gery73 »



Hi everyone.

I am new to this forum and welcome everyone. I'm from Poland.

I bought a gl 1200 from 85 and I have a problem with the fuel supply system. A non-original fuel pump was installed in this motorcycle, to which a separate power supply system was made, I bought the original fuel pump and connected to the connector near the fuel filler. And here I have a problem - the pump starts working only when the engine is running, when I turn the starter does not give fuel and the motorcycle does not want to start. Please, do you have any ideas and shouldn't it be that when I turn the ignition key the pump should start and pump up the fuel?
And one more thing after turning off the motorcycle after about 2 minutes I hear gurgling in the fuel tank - and the motorcycle does not want to ignite anymore. Please, give me some ideas.

thanks gerard

Ps: Forgive my English ...



dburk77
Posts: 2
Joined: Thu Jun 18, 2020 4:04 pm
Location: United States
Motorcycle: 1984 GL1200A Aspencade

Re: Fuel pump problem ...

Post by dburk77 »

Gerard,

From the other posts I've read on this site the pump receives a signal from the pulse generators so it isn't a run of the mill constant running electrical fuel pump like you may be expecting. I'm working on an 84 GL1200A. I don't have signal going to the fuel pump at the fuel pump connection. Based on the wiring diagram my next stop is to find and check the fuel pump relay. If that is not where I am losing signal then I will be forced to come to terms with that fact that it may be the pulse generators which on the 84 are mounted on the rear of the motor. If you end up at the pulse generators on your 85 then luckily those are located at the front of the motor. Good luck I hope this helped ya out some.

Burk

gery73
Posts: 6
Joined: Fri Jun 05, 2020 6:34 am
Location: Poland
Motorcycle: Gł 1200 Interstate 1985

Re: Fuel pump problem ...

Post by gery73 »

Hello

I've solved the problem. The problem was the bad main grounding of the motorcycle (left side of the engine) which caused - in my opinion, bad impulses to the ignition coils - that's why the motorcycle fired poorly. I caught it while riding a motorcycle and watching the voltmeter and then measured the battery charge, which was 12.65 V - not enough. I thought I was going to replace the alternator - and this is how you know a lot of work. Fortunately it was only tarnished ground. Now the motorcycle fires easily and the charging is at 14 V.

Thank you for your interest and your response.

P.S. Colleagues, check the correct ground connection - it really causes a lot of faults in our Goldwings.

I greet Gerard

dburk77
Posts: 2
Joined: Thu Jun 18, 2020 4:04 pm
Location: United States
Motorcycle: 1984 GL1200A Aspencade

Re: Fuel pump problem ...

Post by dburk77 »

Gerard,

Good deal. I also cleaned all the grounds I could find. I am hoping for my sake it's only the relay.


Burk

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landisr
Posts: 754
Joined: Tue Jul 28, 2009 12:18 pm
Location: Gilbert, AZ
Motorcycle: 1976 GL1000
1976 GL1000LTD
1994 GL1500A

Re: Fuel pump problem ...

Post by landisr »

Welcome to the assylum, Gerard. Congrats on finding your problem and thanks for sharing this new tip.

And your English is just fine. :lol:

Ron in AZ


I'm not so sure about an inner child, but I have an inner idiot that surfaces every now and then.. :mrgreen:

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