88 gl1500 gets horrible gas mileage


Information and questions on GL1500 Goldwings (1988-2000)
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HawksRok12
Posts: 4
Joined: Sat Jun 11, 2016 10:50 pm
Location: cheyenne, wy
Motorcycle: 1988 Honda Goldwing gl 1500

88 gl1500 gets horrible gas mileage

Postby HawksRok12 » Fri Jul 08, 2016 10:28 pm



1988 go 1500 been sitting for a few years, drained fuel and put new. Seems to run good but gets very bad gas mileage any ideas



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Happytrails
Posts: 653
Joined: Wed Sep 04, 2013 6:13 pm
Location: Tarentum, Pennsylvania
Motorcycle: 1991 Goldwing 1500 SE

Re: 88 gl1500 gets horrible gas mileage

Postby Happytrails » Fri Jul 08, 2016 11:21 pm

What kind of mpg are you getting?
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset

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Fiberthree
Posts: 447
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Location: Behind the windshield
Motorcycle: Black 1999 GL1500SE

Re: 88 gl1500 gets horrible gas mileage

Postby Fiberthree » Sat Jul 09, 2016 10:57 am

And what MPG are you expecting?
Ed

WARNING: All posts are subject to influence from an uncontrollable dominant sarcastic gene. Offensive remarks may or may not be intentional.

HawksRok12
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Joined: Sat Jun 11, 2016 10:50 pm
Location: cheyenne, wy
Motorcycle: 1988 Honda Goldwing gl 1500

Re: 88 gl1500 gets horrible gas mileage

Postby HawksRok12 » Sat Jul 09, 2016 11:59 am

I am down to half tank after only 37 miles. From Internet should get 35- 40 mpg

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Fiberthree
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Location: Behind the windshield
Motorcycle: Black 1999 GL1500SE

Re: 88 gl1500 gets horrible gas mileage

Postby Fiberthree » Sat Jul 09, 2016 12:16 pm

You can't go based on the fuel gauge. It is more of a courtesy device than an accurate measuring instrument. Your tank holds 6.1 gallons, so when you say you are down to half a tank after 37 miles, do you actually add three gallons to top it off? If your low fuel light works it should come on when you are down to about one gallon left in the tank.
Ed

WARNING: All posts are subject to influence from an uncontrollable dominant sarcastic gene. Offensive remarks may or may not be intentional.

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Happytrails
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Location: Tarentum, Pennsylvania
Motorcycle: 1991 Goldwing 1500 SE

Re: 88 gl1500 gets horrible gas mileage

Postby Happytrails » Sat Jul 09, 2016 12:26 pm

Could be something wrong but I agree the fuel gauge isn't the most accurate thing on a gl1500. Mine tends to show full tank for a long time then drop like a stone to half a tank. Its a lot more accurate to fill the tank, reset the odometer and then next time you fill up again see how much gas you put in then figure out your mpg with a cellphone app. If your bike is running good and everything seems fine chances are you miscalculated your mpg.

When I'm riding a long distance I'll rely on the odometer more than the fuel gauge when its time to stop and buy gas. :D
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset

HawksRok12
Posts: 4
Joined: Sat Jun 11, 2016 10:50 pm
Location: cheyenne, wy
Motorcycle: 1988 Honda Goldwing gl 1500

Re: 88 gl1500 gets horrible gas mileage

Postby HawksRok12 » Sat Jul 09, 2016 7:04 pm

Thanks for all the input, I will do some more riding and see what it comes out at. I am new to gold wings and I also have an issue with rear brakes. Rebuilt rear master cylinder and reverse bled brakes but still no braking while riding. Did bleed front left first and then rear. Air was bled but brakes still don't work. Any ideas

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Happytrails
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Motorcycle: 1991 Goldwing 1500 SE

Re: 88 gl1500 gets horrible gas mileage

Postby Happytrails » Sat Jul 09, 2016 8:29 pm

Sounds like there is still air in the system.
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset

HawksRok12
Posts: 4
Joined: Sat Jun 11, 2016 10:50 pm
Location: cheyenne, wy
Motorcycle: 1988 Honda Goldwing gl 1500

Re: 88 gl1500 gets horrible gas mileage

Postby HawksRok12 » Sun Jul 10, 2016 8:25 am

Ok, thank you. I will do some more bleeding

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raven41951
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Location: Haverhill, MA
Motorcycle: 2016 GL1800
1994 GL1500SE (sold)
1995 VT1100 C2 Shadow ACE (Gifted)
1975 Kawasaki 500

Re: 88 gl1500 gets horrible gas mileage

Postby raven41951 » Sun Jul 10, 2016 8:48 am

If the bike was sitting for a while you definitely want to change the air filter and the cruise air filter. Mine had a huge mouse house built from steel wool and acorn nut shells. There are several DIYs here that explains the removal of the plastic that allows you to get at the filter. Follow them CLOSELY and be sure to reassemble in the correct order otherwise you will do what I did and spend way too much time on it. You will also want the check and possibly replace the spark plugs during this procedure. There is also a DIY for "reading" spark plugs.

There are a ton of other things that will need to be checked as well. Check through the DIYs for removal from storage items.

To clarify the fuel gauge: The tank holds 6.1 gallons. The fuel gauge reads empty at the 1 gallon mark (which is when the low fuel light should come on) leaving the remaining gallon as a "reserve". The fuel gauges are notoriously misleading and only provide an approximation of the fuel level, unless you have taken the pains to calibrate it.
The best way to check mileage is starting with a full tank, reset trip meter and ride until the tank reads empty, then fill the tank and calculate your MPG. Short trips can be a misleading indicator of mileage, be sure to empty the tank, even if it takes more than 1, 2 or 3 rides. Repeat several times to be sure. Mine varies from 35 to 50 mpg depending on the type of riding I do. Interstate highway speeds over 3000 rpm (70+) will use more fuel. State highways (45-55) will give higher mileage. Mine is a mix of the two plus back roads (which I love the best) and I average in the 37mpg area.

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Happytrails
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Location: Tarentum, Pennsylvania
Motorcycle: 1991 Goldwing 1500 SE

Re: 88 gl1500 gets horrible gas mileage

Postby Happytrails » Sun Jul 10, 2016 9:03 am

HawksRok12 wrote:Ok, thank you. I will do some more bleeding


After the brake lines are completely empty it can be difficult to get all the air out once you refill it. Some people bench bleed the master cylinders and that works very good. I just use a mighty vac to sort of prime the system (this worked great on my truck too!). Then I bleed it normally. If you get most of the air out your should have brakes but they may feel slightly soft. You can rest weight on the rear brake pedal overnite and that will help to get more air out of the system. And I also installed speed bleeders to make it easy to 1 person bleed the brakes. I only did this on the rear brakes but might do this for the clutch and front brakes because it works so well. :D :D
Last edited by Happytrails on Sun Jul 10, 2016 9:06 am, edited 1 time in total.
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset

User avatar
Happytrails
Posts: 653
Joined: Wed Sep 04, 2013 6:13 pm
Location: Tarentum, Pennsylvania
Motorcycle: 1991 Goldwing 1500 SE

Re: 88 gl1500 gets horrible gas mileage

Postby Happytrails » Sun Jul 10, 2016 9:04 am

double post........ sorry :D :D
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset

nayron
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Location: Fort Smith, Arkansas
Motorcycle: 1983 Honda Goldwing GL1100

Re: 88 gl1500 gets horrible gas mileage

Postby nayron » Wed Jul 13, 2016 10:40 am

This question is for Happytrails.
Where did you get the speed bleaders and how are they installed?

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Happytrails
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Location: Tarentum, Pennsylvania
Motorcycle: 1991 Goldwing 1500 SE

Re: 88 gl1500 gets horrible gas mileage

Postby Happytrails » Wed Jul 13, 2016 1:07 pm

nayron wrote:This question is for Happytrails.
Where did you get the speed bleaders and how are they installed?


Got them from http://www.speedbleeder.com

You unscrew you oem bleeder screws and screw the speedbleeders in. There website explains it better than I can. Was tentative at first because of price but they work so well.
Last edited by Happytrails on Wed Jul 13, 2016 4:18 pm, edited 1 time in total.
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset

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MikeB
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Location: Tacoma, WA
Motorcycle: 1998 - GL1500 Aspencade.
2003 - GL1800A

Re: 88 gl1500 gets horrible gas mileage

Postby MikeB » Wed Jul 13, 2016 1:35 pm

Speed Bleeders are truly the one person bleeding system. The internal valve is the key to its operation.



With no pressure applied to the line, the valve stays closed. When pressure is applied via the lever or peddle, it passes fluid and air in the line. Releasing the lever or peddle allows the valve to close.

So, simply open the valve about half a turn and bleed your system then close the valve. It doesn't get any easier.


MikeB
Tacoma, WA, USA


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