fuel pump on 1985 gl 1200 interstate


Information and questions on GL1200 Goldwings (1984-1987)
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tracyt
Posts: 6
Joined: Tue Mar 27, 2012 4:34 pm
Location: Fayetteville, North Carolina
Motorcycle: 1985 gl1200 interstate

fuel pump on 1985 gl 1200 interstate

Postby tracyt » Tue Mar 27, 2012 7:14 pm



Hello,is the fuel pump on a 1985 gl 1200 interstate supposed to get hot after 10 miles?



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virgilmobile
Posts: 7655
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 on 1985 gl 1200 interstate

Postby virgilmobile » Tue Mar 27, 2012 7:43 pm

Well hot is a relative term.It is bolted to the engine and it's hot.
So hot you can't even tap it is not normal The pump may be binding.When your riding again,around a mile or so,reach down and feel the pump.It should be warm and going thump,thump,about once every 2 or 3 seconds.When first started the pump may thump 2 or 3 times a second and then slow down to once every 6-7 seconds.
Now the pump should really go THUMP,like tapping with a rubber mallet. If it's dragging,it may stay energized and overheat.
You can actually remove the rear cover(with the wires) and watch the pump work.
A small shaft that's connected to the spring and diaphragm operate a trigger switch.
I did repair a pump that ticked really loud.I believe that the noise damper may be binding up your shaft and not letting the pump to cycle quick.
http://www.goldwingdocs.com/forum/viewt ... =12&t=8642

tracyt
Posts: 6
Joined: Tue Mar 27, 2012 4:34 pm
Location: Fayetteville, North Carolina
Motorcycle: 1985 gl1200 interstate

Re: fuel pump on 1985 gl 1200 interstate

Postby tracyt » Wed Mar 28, 2012 6:34 am

ok thanks for the reply...would a bad fuel pump cause the bike to start skipping after 10 miles then completely lose power? then after it sits for a while crank up and run smoothly until it happens again?

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

Re: fuel pump on 1985 gl 1200 interstate

Postby virgilmobile » Wed Mar 28, 2012 6:43 am

That could be a cause.fuel starvation.
Another is a thermal pulse generator,causing the spark to die off.Even on just 2 cylinders.
If you don't want to mess with the pump,it can be replaced with a pump frpm a 87honda prelude.I think there 3.5 psi pumps.Autozone has them,about$65.

tracyt
Posts: 6
Joined: Tue Mar 27, 2012 4:34 pm
Location: Fayetteville, North Carolina
Motorcycle: 1985 gl1200 interstate

Re: fuel pump on 1985 gl 1200 interstate

Postby tracyt » Wed Mar 28, 2012 6:49 am

thanks so much virgilmobile...where is the thermal pg located?i have a wrecked 87 1200 interstate so i could replace it with the one off of that one. i have replaced coils,ignition(beside the battery) and tried the fuel pump off the 87 but that pump is bad...i will try the prelude fp if its not the pg...thanks again,y'all are such a great help...this site is awesome :D

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virgilmobile
Posts: 7655
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 on 1985 gl 1200 interstate

Postby virgilmobile » Wed Mar 28, 2012 10:23 am

I don't have acess to my service manuals,I'm in the field.look at the downloaded manual under ignition system for the bike.it's labeled as pulse coil.there's 2 of them.you can take apart the extra pump to see if it's fixable.one of my posts shows how.

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virgilmobile
Posts: 7655
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 on 1985 gl 1200 interstate

Postby virgilmobile » Wed Mar 28, 2012 2:24 pm

It appears your lucky,the 84 has the pulse generators in the back of the engine.Yours are in the front.Oh,and when I said "thermal generator coil",I did mean that the coil can open when it gets hot,or it becomes "thermal" ....terminology....potato..potatoe :roll:

tracyt
Posts: 6
Joined: Tue Mar 27, 2012 4:34 pm
Location: Fayetteville, North Carolina
Motorcycle: 1985 gl1200 interstate

Re: fuel pump on 1985 gl 1200 interstate

Postby tracyt » Wed Mar 28, 2012 4:31 pm

oh my :shock: ...this might be a challenge...im new to wings and only a lil mechanically incline,but its worth a try... :D thanks...i'll keep y'all up to date...thanks so much

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virgilmobile
Posts: 7655
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 on 1985 gl 1200 interstate

Postby virgilmobile » Wed Mar 28, 2012 5:56 pm

If your first step is to change out the PG .Might I suggest doing the spare bike first.you know,as a learning curve.You have to remove one timing belt(by the book) to get the wiring out.If this is really true,turn the crank where the PG mount till both cam pulleys show UP and the timing marks are lined up.this is so the belt can go back on correctly.This is very important on the bike your fixing.If you remove the belt,it MUST go back on exactly the way it came off,direction and tension

saltydog
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Location: Pottsboro, TX
Motorcycle: 1986 GL1200 Aspencade

Re: fuel pump on 1985 gl 1200 interstate

Postby saltydog » Wed Mar 28, 2012 6:15 pm

I just bought a E3186 airtex pump from Rock Auto for 22 bucks. They did have one left.

tracyt
Posts: 6
Joined: Tue Mar 27, 2012 4:34 pm
Location: Fayetteville, North Carolina
Motorcycle: 1985 gl1200 interstate

Re: fuel pump on 1985 gl 1200 interstate

Postby tracyt » Sun Apr 15, 2012 7:17 pm

Ok...i got the pg out of the "wrecked" GW...I did NOT have to remove the timing belt(Thank God).Now I've gotta take the other Wing apart to put the pg in. I HOPE this will fix my problem...This site is the best :!: :D

tracyt
Posts: 6
Joined: Tue Mar 27, 2012 4:34 pm
Location: Fayetteville, North Carolina
Motorcycle: 1985 gl1200 interstate

Re: fuel pump on 1985 gl 1200 interstate

Postby tracyt » Sun Apr 15, 2012 7:20 pm

Thanks virgilmobile and saltydog




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