17 Miles per gallon on '77 GL1000


Information and questions on GL1000 Goldwings (1975-1979)
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orbitizer
Posts: 3
Joined: Mon May 21, 2012 1:01 pm
Location: Kingman, Kansas
Motorcycle: 1977 GL1000 Goldwing

17 Miles per gallon on '77 GL1000

Postby orbitizer » Fri May 25, 2012 9:19 am



Hi,
I just took my first road trip on my beautiful 1977 Honda Goldwing 1000.
It only has 19000 miles on it and has been a garage queen its whole life.
Problem is that it averaged 17.1 miles per gallon.
My Volvo gets better mileage than this at 85 miles per hour.
This is a terrible motorcycle and will probably sell this lousy piece of poor engineering.
Does anyone else feel this way?
Orbitizer



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WingAdmin
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Re: 17 Miles per gallon on '77 GL1000

Postby WingAdmin » Fri May 25, 2012 9:55 am

It's actually a superior piece of engineering, and running properly will get 40+ mpg. You just need to take the time to make sure it's running well. 17 mpg means you've likely got some carb issues.

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virgilmobile
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Re: 17 Miles per gallon on '77 GL1000

Postby virgilmobile » Fri May 25, 2012 11:37 am

Pull the plugs and look at the tips.If there sooty black,it's running rich.
It's either the slides stuck up or the floats sinking in the bowl,raising the fuel level and effectively running a very rich condition.
By 78 would run around town at 30mpg.Obviously that was either idle ow WOT. :D

If there tan....well your leaking the gas out.The engine is getting the right amount of fuel.
I did have a bike with a rust spot in the bottom.I didn't notice until I parked on asphalt and backed up.Then I noticed the spot.

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JellyBelly
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Location: Southaven, MS
Motorcycle: 2000 Valkyrie GL1500
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Re: 17 Miles per gallon on '77 GL1000

Postby JellyBelly » Fri May 25, 2012 11:40 pm

Time to clean the cabs and set the float levels right my friend.
I love my wings (both Hot and Gold) - check out my blog @ http://wingthing1000.blogspot.com/

Former 76, 77, and 78 GL1000 owner...Upgraded to a Chromed out Valkyrie

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dingdong
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Motorcycle: 1976 gl1000
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Re: 17 Miles per gallon on '77 GL1000

Postby dingdong » Sat May 26, 2012 6:02 am

Wow! A beautiful 1977 wing that is a lousy piece of poor engineering. Had to chuckle at that. What you have is one of the better engineered motorcycles ever built. She just needs some TLC. If you are mechanically inclined you can do this yourself. We would be happy to assist. You also have, there in Kingman, a mc shop, Bobz Bikez. They will work on the bike if you choose not to. Say hello to Steve for me.

Tom
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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JellyBelly
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Re: 17 Miles per gallon on '77 GL1000

Postby JellyBelly » Sat May 26, 2012 7:01 am

To give you an idea of what you will have to do, check out the three videos on my blog. I video taped my exciting adventure in carb rebuilding.

http://wingthing1000.blogspot.com/2012/ ... build.html

I highly recommend buying the kit from Randakk that includes the video.

For a little over $100 you'll be getting better gas mileage in no time.
I love my wings (both Hot and Gold) - check out my blog @ http://wingthing1000.blogspot.com/

Former 76, 77, and 78 GL1000 owner...Upgraded to a Chromed out Valkyrie

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moose4jesus
Posts: 40
Joined: Sun Sep 11, 2011 9:19 pm
Location: Canton, MI
Motorcycle: 1978 GL1000

Re: 17 Miles per gallon on '77 GL1000

Postby moose4jesus » Mon May 28, 2012 2:56 pm

I bought my '78 last year and was averaging 25 mpg at first, then got Randakk's kit and video and rebuilt the carbs and now I'm averaging 40-45 mpg. Highly recommend the DVD it's well done and easy to follow along it took me three full evenings after work to complete.

orbitizer
Posts: 3
Joined: Mon May 21, 2012 1:01 pm
Location: Kingman, Kansas
Motorcycle: 1977 GL1000 Goldwing

Re: 17 Miles per gallon on '77 GL1000

Postby orbitizer » Thu Jun 14, 2012 9:43 am

Thank you everyone who responded.
I may try Jellybelly and moose4jesus idea of rebuilding the carbs using randakks kit.
I actually had the wonderful mechanic at Bobz Bikz work on it ...he timed it correctly. It now has waaay more power but the mileage is still only about 25 MPG. It runs so good with great acceleration and smoothness. Would it run this nice if the carbs were bad?
I have pretty good mechanical skills but rebuilding those carbs with all those tiny intricate parts seems intimidating.
I rebuilt the engine in my van. Think I can rebuild those carbs?
Thanks again, Geoff
PS thank you Mike at Bobz Bikz you are a great mechanic and wonderful person!!!!!!

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seabee_
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Re: 17 Miles per gallon on '77 GL1000

Postby seabee_ » Thu Jun 14, 2012 10:52 am

The carbs are easier than you think. Just take your time, keep all the individual carb pieces together,(don't inter mix them), watch all the videos and tutorials and take lots of pics along the way. Oh, and use butter tubs and/or zippy bags to keep things contained. It can still run decent with timing correct and carbs so-so, but after you rebuild them and HAVE THEM synched, it will rip your arms off :lol: when you goose that throttle. Oh, and the mpg's will improve also. Good luck and jump right in to the rebuild. You'll be glad you did.
Paul
CE1 Navy Seabees/RET
1981 to 2002
ASE Mechanic

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moose4jesus
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Motorcycle: 1978 GL1000

Re: 17 Miles per gallon on '77 GL1000

Postby moose4jesus » Thu Jun 14, 2012 2:31 pm

Orbitizer, the most difficult carb rebuild task for me was setting the float heights. Randaak explains and shows this thouroughly but it was mostly my own perfectionism setting in that frustrated me and caused doubt. Finally I said 'screw it, it's as good as it can be' and put everything back together.

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Fred Camper
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Re: 17 Miles per gallon on '77 GL1000

Postby Fred Camper » Thu Jun 14, 2012 9:04 pm

Looks like our poster moved on. Too bad, as this forum could have helped him get that bike back on track. My 1977 gets better than 40, way better if I stay off the superslab. These are wonderful bikes for sure.

Kintan
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Location: Lake St. Louis, Missouri
Motorcycle: 1977 GL1000

Re: 17 Miles per gallon on '77 GL1000

Postby Kintan » Fri Jun 15, 2012 9:07 am

Well, I am in the same camp as the original poster with gas mileage. I get about 115 miles per tank before I need a refill. I have paperwork saying that the carbs were synched and were rebuilt. It also has aftermarket exhaust. Could it be a problem of the fuel idle mixture being too rich? Or would it just be the carbs? I am not intimidated about rebuilding them, just wanted to avoid it if I could :)

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Fred Camper
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Re: 17 Miles per gallon on '77 GL1000

Postby Fred Camper » Fri Jun 15, 2012 10:13 am

My bet is that your floats do not seal and let fuel overflow in one or more cars. Setting float level is tricky and beyond the means of a mechanic without Randakk's method. So that is where I would look right after I was sure the ignition system was perfect.

Kintan
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Location: Lake St. Louis, Missouri
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Re: 17 Miles per gallon on '77 GL1000

Postby Kintan » Fri Jun 15, 2012 10:51 am

Roger. I'll get on that the next time I have a day off and no kids to watch lol.

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portugeezer
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Re: 17 Miles per gallon on '77 GL1000

Postby portugeezer » Wed Jun 20, 2012 5:16 pm

Geoff, Last summer I rode my bike to where you live from Chicago! I got 41 MPG. I have a points free ignition that actually helped my mileage. If I were you I would check the plugs to see if they're black. If not are you sure you are not leaking fuel somewhere? 17MPG is crazy low! A new air filter improved my mileage too. Mine was getting about 28MPG at first. I did rebuild my carbs but I don't think that was the problem. Kingman is not a bad place I considered moving to that area. I even stopped at Bobz Bikes! Nice people! Good luck with your bike! Don't give up on it and you'll get it right! ;)

Kintan
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Location: Lake St. Louis, Missouri
Motorcycle: 1977 GL1000

Re: 17 Miles per gallon on '77 GL1000

Postby Kintan » Thu Jun 21, 2012 7:25 am

So I got my spark plugs out. Plugs 1 and 2 were normal looking for used plugs whereas 3 and 4 were nice and black with carbon....so now I start the rebuild process. I have already timed the ignition so here we go!

bluec10
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Joined: Sun Jul 03, 2011 7:33 pm
Location: Manitoba, Canada
Motorcycle: 1979 GL1000

Re: 17 Miles per gallon on '77 GL1000

Postby bluec10 » Sun Jul 01, 2012 1:49 pm

This is the story of my 79. When I got up it was running about 15 to 20 miles to the gallon. I cleaned and synced the carbs and I got it up to 25. Last time I started the bike the pipes were smoking and fuel was dripping from the plenum. Time for Randakk's kit...which will arrive next week.

sfruechte
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Location: La Crosse, WI
Motorcycle: 1977 GL1000

Re: 17 Miles per gallon on '77 GL1000

Postby sfruechte » Sun Jul 01, 2012 5:02 pm

You should never get less than 35 mpg no matter how hard you ride, even with ethanol/gasoline. In 218,000 miles, I have averaged 45 mpg since new and have gotten in the fifties but not consistently. The gas is either going out the tail pipe or on the ground and either one should be pretty obvious with either black smoke or the smell of gas and spots on the ground.

dlarsen1972
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Motorcycle: 1978 GL100

Re: 17 Miles per gallon on '77 GL1000

Postby dlarsen1972 » Tue Aug 07, 2012 10:11 pm

Yes mine gets' about 45 mpg on the highway, but I have a fuel leak on the left side now and it has trouble starting. Is there a way to blow out the needle valve, I just replaced all the fuel lins and it sat a while.i have 45k on it, usually runs good - but now I have a leak. Any suggestions, thanks Dale.

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scotterichmond
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[img]http://images.goldwingdocs.com/scotterichmond_32376/Modestly_restored_1975_GL1000_750/engine_repainted_even_new_embl_3919.jpg[/img]

Re: 17 Miles per gallon on '77 GL1000

Postby scotterichmond » Wed Aug 08, 2012 8:34 am

Here is my thoughts . There are no short cuts when it comes to GL1000 carbs. If it ain't right , they have to come apart and be set RIGHT. period.

And I'll bet money other experienced mechanics would say the same.
ask Randal Washington if there is any short cuts.

sorry guys it just had to be said, i'll sit back and watch now.

sfruechte
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Re: 17 Miles per gallon on '77 GL1000

Postby sfruechte » Wed Aug 08, 2012 6:05 pm

dlarsen1972: Is it leaking out the bowl overflow? If so you might try the old fashioned way of tapping on the carb to help the needle valve to seat. Seafoam might help if the needle seat is getting gummed up. It never hurts to try the easiest stuff first. You can always get carried away later.

highballky
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Re: 17 Miles per gallon on '77 GL1000

Postby highballky » Thu Aug 09, 2012 6:30 pm

I'll bite how much do you want for that piece of ****?

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tom84std
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Re: 17 Miles per gallon on '77 GL1000

Postby tom84std » Thu Aug 09, 2012 11:18 pm

Just out of pity for that poor man I'll give him $500 and take that piece of junk off his hands. Then he can buy himself a fine piece of modern engineering like a Harley.

sfruechte
Posts: 193
Joined: Tue Mar 09, 2010 12:53 pm
Location: La Crosse, WI
Motorcycle: 1977 GL1000

Re: 17 Miles per gallon on '77 GL1000

Postby sfruechte » Fri Aug 10, 2012 8:49 am

One more thing to consider regarding gas mileage is the variability in how you fill the tank. If the nozzle is inserted all the say into the tank and you stop filling when it cicks off with amount to a considerable amount vs. squeezing in as much gas as you can. This can have a large impact when dealing with a small number of gallons in the calculation.

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larrycole
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Re: 17 Miles per gallon on '77 GL1000

Postby larrycole » Fri Aug 10, 2012 10:24 am

Last summer I averaged 38mpg riding two-up, towing a trailer through Utah in 104 degree heat. I've rebuilt the carbs and put in a Dyna S ignition, both of which worked wonders. What is probably the best thing for it is that it is not a restoration, but has been ridden continually since it left the dealer. 140K on it now.

Larry
'76 Yellow




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