'77 GL1000 Rough running

Information and questions on GL1000 Goldwings (1975-1979)
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Posts: 2
Joined: Sat Jul 24, 2010 7:30 am
Location: United Kingdom
Motorcycle: 1977 GL1000 K2

'77 GL1000 Rough running

Post by kd774 » Sat Sep 25, 2010 9:46 am

Hi guys
Just bought my bike, previous owner claimed fuel tank and carbs had just been cleaned out. Starts without problem but as it gets warm it it starts to splutter & cough. On acceleration not much power away from standing start. Feels like its not running on all cylinders. When stopping at junctions engine races and takes several seconds to return to tickover. Have changed plugs and caps with no change. Should I change the coils or have the carbs/ petrol tank serviced?

Posts: 211
Joined: Tue Mar 09, 2010 12:53 pm
Location: La Crosse, WI
Motorcycle: 1977 GL1000

Re: '77 GL1000 Rough running

Post by sfruechte » Fri Oct 01, 2010 1:37 pm

Check the air cutoff valve and slow air lines. The air cutoff valve can be removed without removing the carbs but you do have to remove the air cleaner. You may have a bad diaphram, leaky valve or leaky hoses.

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Posts: 423
Joined: Tue Mar 09, 2010 12:58 pm
Location: Placerville, CA
Motorcycle: 1976 Naked Yellow

Re: '77 GL1000 Rough running

Post by Placerville » Fri Oct 01, 2010 1:46 pm

When were the carbs last rebuilt? If the PO can't tell you, they need to be rebuilt. By a kit from Rankakks and do it yourself or send them off to Pistol Pete and have him do it. Is your fuel pump weeping fuel (from the two small holes underneath? If so, the diaphragm is shot. Get a new pump (available from Mother Honda). Drain your tank of fuel. Look in the filler neck with a flashlight. Do you see rust? If so, your tank needs to be cleaned. To do a 100% job, take it out of the bike and have it cleaned at a radiator shop. Read more about this at Randakks site. You can clean it on the bike as well with Muriatic Acid. I did. Rebuilt the petcock while your at it. Change your fuel lines and filter. If the above doesn't fix the problem, it needed to be done anyway so you're ahead!
Placerville- 1976 Yellow

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