1976 GL1000 Won't run & tach not reading


Information and questions on GL1000 Goldwings (1975-1979)
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DShrontz123
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Joined: Sun Jun 20, 2010 8:17 pm
Location: Salem, Ohio
Motorcycle: 1976 GL1000 LTD

1976 GL1000 Won't run & tach not reading

Postby DShrontz123 » Sun Jun 20, 2010 8:33 pm



I just purchased a 1976 GL1000 two days ago. It seems to be in really nice shape with 21k on it. I know it sat for a while so have treated the fuel system with seafoam as it was popping a bit during deceleration. I took it for it's maiden voyage so to speak today and it was running better throughout the day. Then it cut out as if starved for gas. The tach quit working too. Then it felt like it was running on two cylinders. Finally she quit. I have changed the fuel filter, had the fuel pump apart, and removed petcock to ensure that I have free flowing fuel from tank. Honestly I don't like the way it flows yet but I am reasonable certain it is not a lack of fuel. I trailered it home and when I tryed a restart in the garage she fired up and ran for about three minutes and then cut off again. No tach at all when running. Has anyone else run into this?



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dingdong
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Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: 1976 GL1000 Won't run & tach not reading

Postby dingdong » Mon Jun 21, 2010 8:22 am

Well, I hate to tell you this but it sounds like you possibly broke the timing belt on the right side. The symptoms all point to this. The fuel pump and the tach are both driven by the right side cam. Also with the belt broken the bike will only run on the two left side cylinders. Bad part of this is that the valves are damaged and possibly the pistons. Pull the right side timing cover and check. Good luck, I hope I'm wrong.
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.

DShrontz123
Posts: 4
Joined: Sun Jun 20, 2010 8:17 pm
Location: Salem, Ohio
Motorcycle: 1976 GL1000 LTD

Re: 1976 GL1000 Won't run & tach not reading

Postby DShrontz123 » Mon Jun 21, 2010 3:57 pm

Thank you. That sounds perfectly rational. I haven't had a chance to even purchase a manual for it yet. Guess I should have before I jumped on it. I will let you know what I find.

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78AzWing
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Location: San Tan Valley, Arizona
Motorcycle: 1978 GL1000 UnDressed and Progressively Weber Carbureted

Re: 1976 GL1000 Won't run & tach not reading

Postby 78AzWing » Wed Jul 07, 2010 8:29 am

If you broke one of the belts, it would not run at all.
Certainly not for three minutes like you stated. The carb bowls don't hold that much fuel in them to begin with. Maybe 30 to 45 seconds worth.

But you do need to pull the timing gear covers to check the belts. And if you did not see them getting installed, you want to replace them anyway. It is absolutely impossible to be able to determine how long they have untill failure. They don't give warning signs. One minute they are good, the next minute they are broken. And you have to pull the heads to see if you have holed pistons, or just bent valve stems.

Sounds more like something that gets loose when it gets warm. Connection in a wire some where maybe. The ignition switch needing cleaned. The shutoff switch getting bumped. That sorta thing.

How much SeaFoam did you put in your tank? It tends to loosen up the junk in there and you could have something that is floating around and getting sucked up against the end of the fuel pickup tube.
Meddle not in the affairs of Dragons
For thee are Krunchie and taste goode with Ketchup!

DShrontz123
Posts: 4
Joined: Sun Jun 20, 2010 8:17 pm
Location: Salem, Ohio
Motorcycle: 1976 GL1000 LTD

Re: 1976 GL1000 Won't run & tach not reading

Postby DShrontz123 » Wed Jul 07, 2010 9:01 am

I want to say thank you to those who replied. It was indeed the right side cam belt. It in turn took out both exhaust valves. I have replaced both belts, replaced the valves and got it back up and running. I have been riding it for the last six days. It is still blowing some junk out as it goes through new gas. It seems to be idling better now and (knock on wood) is performing pretty well over all. I am planning on re-adjusting the valve lash this weekend as there in a slight bit of "tick" going on.

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78AzWing
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Motorcycle: 1978 GL1000 UnDressed and Progressively Weber Carbureted

Re: 1976 GL1000 Won't run & tach not reading

Postby 78AzWing » Wed Jul 07, 2010 9:53 am

You may find that there is a tick to your bike all the time. Others have reported it also.
Seems to be one of the idiosyncrasies of the bike. They tick a little.

So, Tach is working, belts replaced, SeaFoam through the carbs. Have they been synched yet?

Have fun.

Which belts did you use? Napa, Gates, Honda?
Meddle not in the affairs of Dragons
For thee are Krunchie and taste goode with Ketchup!

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dingdong
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Motorcycle: 1976 gl1000
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Re: 1976 GL1000 Won't run & tach not reading

Postby dingdong » Wed Jul 07, 2010 9:56 am

Good that you got the bike running again. I'll take a Bud for my diagnosis, thank you! ;) ;)
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.

DShrontz123
Posts: 4
Joined: Sun Jun 20, 2010 8:17 pm
Location: Salem, Ohio
Motorcycle: 1976 GL1000 LTD

Re: 1976 GL1000 Won't run & tach not reading

Postby DShrontz123 » Wed Jul 07, 2010 11:58 am

I used Gates Belts. I haven't sinc'd the carbs yet as I wanted to see how things went with the Seafoam and running it a while first. The idle has jumped up after riding it and I am slowly backing off the set screw. She isn't doing bad, but has a little low speed surge. If it continues for much longer I plan to.




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