94 gl 1500i fuel pump


Information and questions on GL1500 Goldwings (1988-2000)
Post Reply
User avatar
Tim 1956
Posts: 43
Joined: Mon Mar 09, 2020 8:20 pm
Location: Okeechobee, Florida usa
Motorcycle: 1994 Honda GL 1500i Goldwing (Interstate)

94 gl 1500i fuel pump

Post by Tim 1956 »



To make a long story short. Trouble shooting my half choke or more running bike recently, I found the fuel pump internal 90 degree hose was cracked almost all the way through, so it was leaking badly inside the tank. Also, my fuel pump relay does not work when you turn on the ign. key. Fuel will only come out the top plate pipe of the fuel pump when I hit the starter button. Can't find that 9/16 i.d. or so 90 degree submersible fuel line and exactly where the fuel pump relay is at. It appears any submersible fuel line larger than 5/16 i.d. can't be found. May have to purchase an entire fuel pump used or new. Have to find the relay before I can order one of those. Thanks.
Tim
:? :roll:



User avatar
DenverWinger
Posts: 1688
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
1980 GL1100 STD Vetter (2005-)
1993 GL1500 Aspencade (2017-)
1983 Trav-Lite Camper (2010-)
Past rides
1972 CL350 (1980-1988) sold
1978 Suzuki GS550 (1985-2005) sold
1977 GL1000 (2002-2006) sold

Re: 94 gl 1500i fuel pump

Post by DenverWinger »

A '94 doesn't have a fuel pump relay, the power for the pump comes directly from the ECU.

Additionally, in the '94 model the pump does not run at all when you first switch the key on. It doesn't run until you hit the Starter button. It was only the '88/'89 models that had the relay and would run the pump a couple seconds when you first turned on the key. So your pump is operating as it should.

Not sure where to find fuel line, Maybe someone else will chime in on that.
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark

User avatar
bluthundr31
Posts: 573
Joined: Tue Jul 11, 2017 11:43 pm
Location: Morgan Hill, CA.
Motorcycle: 1991 GL1500 Interstate (Cinnamon Beige)

Re: 94 gl 1500i fuel pump

Post by bluthundr31 »

DenverWinger is 100% correct about the fuel pump, (great info 'ol friend).

I went through the fuel pump "adventure" a few years back and had no problem with the fuel hose. Check out the Gates #27093 at Amazon for the right hose. I ordered 12" and used about 11 1/2" of it. It is still working flawlessly today. TIP: That dam "bend" in the hose as it comes out of the pump will "kink" if it is too sharp. Some folks have had luck using a 90degree brass elbow there.

User avatar
Tim 1956
Posts: 43
Joined: Mon Mar 09, 2020 8:20 pm
Location: Okeechobee, Florida usa
Motorcycle: 1994 Honda GL 1500i Goldwing (Interstate)

Re: 94 gl 1500i fuel pump

Post by Tim 1956 »

thank you both so much. The other info I found said there was a relay behind the right saddle bag after you removed it. The gates fuel line I found is the link you sent me, but it is 1" id and mine is only about 9/16 id by measuring the tube on the pump. Am I wrong on the I.D.?
Thank you both again.
Tim

User avatar
Tim 1956
Posts: 43
Joined: Mon Mar 09, 2020 8:20 pm
Location: Okeechobee, Florida usa
Motorcycle: 1994 Honda GL 1500i Goldwing (Interstate)

Re: 94 gl 1500i fuel pump

Post by Tim 1956 »

Here is a relay on ebay that is for the 92-94 fuel pump relay. What is the large hose for in the fuel pump? is it just to keep the fuel pump from cavitating. I have no pressure anymore when I open my gas cap. I don't know what to think now.
Thanks.
Tim
Attachments



User avatar
DenverWinger
Posts: 1688
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
1980 GL1100 STD Vetter (2005-)
1993 GL1500 Aspencade (2017-)
1983 Trav-Lite Camper (2010-)
Past rides
1972 CL350 (1980-1988) sold
1978 Suzuki GS550 (1985-2005) sold
1977 GL1000 (2002-2006) sold

Re: 94 gl 1500i fuel pump

Post by DenverWinger »

There is NO RELAY for the fuel pump on a '94 interstate. This page from the Electrical Troubleshooting manual shows power for the fuel pump coming directly from the Engine Control Unit.

The circled text says "Hot in Start or with engine running".


♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark

User avatar
dingdong
Posts: 4012
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500A
2004 NRX1800 Rune SOLD

Re: 94 gl 1500i fuel pump

Post by dingdong »

If it runs with choke (enrichener) the fuel pump is working as it should. The enrichener on 1500s just increases the fuel flow. You probably have a problem in the carbs not the pump.
Since you have 2 threads on the same subject I hope you see this.

User avatar
Tim 1956
Posts: 43
Joined: Mon Mar 09, 2020 8:20 pm
Location: Okeechobee, Florida usa
Motorcycle: 1994 Honda GL 1500i Goldwing (Interstate)

Re: 94 gl 1500i fuel pump

Post by Tim 1956 »

I have rebuilt the carbs about 6 months ago. they are fine. It was running great and the I had to pull the choke on for it to idle in traffic. everywhere I look on ebay they show 92-96 fuel pump relays. If I could find the 9/16 i.d. submersible hose for the fuel pump I would be able to check it out. I may have to buy a used fuel pump instead. Thank you both for all your help. I don't know why everything is so different on ebay. Where do they get their information and relays? My 12v line to my fuel pump is dead with the key on. Only power with the starter switch. Why do I not have power with the key on normal running position? That defeats the purpose. It would be running off of vacuum pressure. All fuses are good and the other relays on the left side are all good. I've switched them all around as they are all the same and everything still works.
Thanks.
Tim :|

User avatar
bellboy40
Posts: 799
Joined: Fri Nov 27, 2009 1:13 pm
Location: Brewton, AL
Motorcycle: 2000 GL1500SE Candy Spectra Red

Re: 94 gl 1500i fuel pump

Post by bellboy40 »

It has been mentioned a few times already, your fuel pump is working as designed. Forget what ebay says, they are wrong. That fuel pump only gets power when you are pushing the starter button and when it starts it will keep the power to it as long as the bike is running.

User avatar
WingAdmin
Site Admin
Posts: 21612
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (sold)
1998 XV250 Virago (sold)
2012 Suzuki Burgman 400 (wife's!)
2007 Aspen Sentry Trailer

Re: 94 gl 1500i fuel pump

Post by WingAdmin »

Tim 1956 wrote:
Wed Jan 06, 2021 5:14 am
thank you both so much. The other info I found said there was a relay behind the right saddle bag after you removed it. The gates fuel line I found is the link you sent me, but it is 1" id and mine is only about 9/16 id by measuring the tube on the pump. Am I wrong on the I.D.?
Thank you both again.
Tim
That Gates hose is 5/16" ID and 1/2" OD, despite what it says on Amazon: https://www.amazon.com/Gates-27093-Fuel ... ref=sr_1_1

You can see the actual specs for it on the Gates site: https://www.gates.com/us/en/search.p.42 ... 05184.html

User avatar
Tim 1956
Posts: 43
Joined: Mon Mar 09, 2020 8:20 pm
Location: Okeechobee, Florida usa
Motorcycle: 1994 Honda GL 1500i Goldwing (Interstate)

Re: 94 gl 1500i fuel pump

Post by Tim 1956 »

Yes, it is way to tiny. Maybe for the other fuel line inside that feeds the outlet tube to the carbs, but not the huge one with the 90 degree bend.
Thanks so much. ;)
Tim

User avatar
Tim 1956
Posts: 43
Joined: Mon Mar 09, 2020 8:20 pm
Location: Okeechobee, Florida usa
Motorcycle: 1994 Honda GL 1500i Goldwing (Interstate)

Re: 94 gl 1500i fuel pump

Post by Tim 1956 »

I have spent the past 2 hours or so removing fairing parts and pulling the outgoing fuel line to the carbs and it was pumping out gas. However when I removed the vacuum line to the petcock and let it run, it would never shut down for lack of gas. If anything, the petcock is not closing and it's open all the time. But I had plenty of gas spraying out of the out tube. I also check each spark plug pulling them off and it would make a slight difference and you could hear the spark. Now when it sets there idling it idles perfectly until I start revving the engine for a few seconds or so using more gas and then it starts idling rough and surging. I am really at a loss now and don't know what to check next as it all checks out ok. Plenty of gas from both ends. Thanks so much for all your suggestions and help. :)
Tim

User avatar
ct1500
Posts: 1456
Joined: Wed Nov 10, 2010 8:09 pm
Location: Glastonbury,CT
Motorcycle: 1988 GL1500
Contact:

Re: 94 gl 1500i fuel pump

Post by ct1500 »

Tim 1956 wrote:
Thu Jan 07, 2021 12:02 pm
. However when I removed the vacuum line to the petcock and let it run, it would never shut down for lack of gas. If anything, the petcock is not closing and it's open all the time.
That is somewhat common on the 1500 due to manufacturing variation for the engine continuing to run at idle after removing petcock vacuum hose and is not an indicator of failure. With valve opened under vacuum and fuel pump pressure present, pump pressure will overcome the return spring slightly within diaphragm of petcock not allowing it to close completely when vacuum line is then removed.
The sure fire way of running carbs dry is to remove vacuum line prior to starting when valve is completely closed. If the valve is working correctly OEM fuel pump pressure cannot then force open a completely closed valve. :D
Local and need repair help with your 1500, Valkyrie or ST please click contact
Nothing leaves my shop till its' perfect
This is what I do

User avatar
Tim 1956
Posts: 43
Joined: Mon Mar 09, 2020 8:20 pm
Location: Okeechobee, Florida usa
Motorcycle: 1994 Honda GL 1500i Goldwing (Interstate)

Re: 94 gl 1500i fuel pump

Post by Tim 1956 »

I had the petcock off of the bike and blew through both ends and still could blow through. Took it all apart and the diaphragm and stop plunger on the other side were in perfect seating and like new since I rebuilt it about 8 months ago. I did the bypass with extra gas hose because I did not see or understand what the other person said that I could unplug the outlet hose and replug it back onto the filter end after removing that hose. I did not understand that. Either way. The gas flows fine but did not solve my problem. Still waiting on someone to answer my other post about the left and right cylinder banks. I pulled the top of the air cleaner off and air filter out and sprayed plenty of carb cleaner with the long straw on it into all the portholes that run down to each jet. I am letting them soak overnight. Can't imagine what would be going on inside there if anything. It never sits idle for more than a week. So no gas is gummed up and a new fuel filter. Thanks for your response. ;)
Tim

User avatar
ct1500
Posts: 1456
Joined: Wed Nov 10, 2010 8:09 pm
Location: Glastonbury,CT
Motorcycle: 1988 GL1500
Contact:

Re: 94 gl 1500i fuel pump

Post by ct1500 »

Tim 1956 wrote:
Fri Jan 08, 2021 4:55 pm
I had the petcock off of the bike and blew through both ends and still could blow through.
Tim
With the fuel valve assembled and off the bike in no way should you be able to blow thru the fuel ports. It is not assembled correctly. Watch this video for correct assembly, noting the metal plunger nub gets attached to the small rubber teet on the other side of center section with the spring on the rearward section where vacuum line attaches.
Regardless though that part malfunction will not cause your running problem. :)


   Never miss a video: Subscribe to the GoldwingDocs YouTube channel today!
Last edited by ct1500 on Fri Jan 08, 2021 7:39 pm, edited 1 time in total.
Local and need repair help with your 1500, Valkyrie or ST please click contact
Nothing leaves my shop till its' perfect
This is what I do

User avatar
Tim 1956
Posts: 43
Joined: Mon Mar 09, 2020 8:20 pm
Location: Okeechobee, Florida usa
Motorcycle: 1994 Honda GL 1500i Goldwing (Interstate)

Re: 94 gl 1500i fuel pump

Post by Tim 1956 »

Thanks. My dementia is not that bad.... yet. :-) Very simple to put back together and only one way to put it back together. You have no choice. ;)
Tim

User avatar
Tim 1956
Posts: 43
Joined: Mon Mar 09, 2020 8:20 pm
Location: Okeechobee, Florida usa
Motorcycle: 1994 Honda GL 1500i Goldwing (Interstate)

Re: 94 gl 1500i fuel pump

Post by Tim 1956 »

Tim 1956 wrote:
Tue Jan 05, 2021 9:56 pm
To make a long story short. Trouble shooting my half choke or more running bike recently, I found the fuel pump internal 90 degree hose was cracked almost all the way through, so it was leaking badly inside the tank. Also, my fuel pump relay does not work when you turn on the ign. key. Fuel will only come out the top plate pipe of the fuel pump when I hit the starter button. Can't find that 9/16 i.d. or so 90 degree submersible fuel line and exactly where the fuel pump relay is at. It appears any submersible fuel line larger than 5/16 i.d. can't be found. May have to purchase an entire fuel pump used or new. Have to find the relay before I can order one of those. Thanks.
Tim
:? :roll:
I guess I have landed on the poo poo list. I am not getting any responses about my left and right cylinder banks firing. I have taken off the air cleaner and sprayed carb cleaner down into all the ports in both carbs. I know what is the slow jet in each carb. I am getting a "tip file" this morning and will stick it in and out of each port hole to see if there are blockages. Easier than removing the carbs and then more carb cleaner and letting it soak. Thanks everyone for your help and ideas. I really do appreciate it. Don't write me off please because I have a difficult time understanding some comments. That is just me. Always has been. :)
Tim

User avatar
DenverWinger
Posts: 1688
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
1980 GL1100 STD Vetter (2005-)
1993 GL1500 Aspencade (2017-)
1983 Trav-Lite Camper (2010-)
Past rides
1972 CL350 (1980-1988) sold
1978 Suzuki GS550 (1985-2005) sold
1977 GL1000 (2002-2006) sold

Re: 94 gl 1500i fuel pump

Post by DenverWinger »

No poo poo list....

I responded in other thread. Confusing when you have two separate threads on same subject. :)
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark

User avatar
Tim 1956
Posts: 43
Joined: Mon Mar 09, 2020 8:20 pm
Location: Okeechobee, Florida usa
Motorcycle: 1994 Honda GL 1500i Goldwing (Interstate)

Re: 94 gl 1500i fuel pump

Post by Tim 1956 »

I have no idea how I started 2 threads. I need a youtube video to watch how to use this site. I don't even know how to respond back to my own comments so others will see it and now stay on the same thread.
So confusing. Sorry and thanks. :oops:
Tim



Post Reply