GL1500 running rich

Information and questions on GL1500 Goldwings (1988-2000)
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Posts: 3
Joined: Sun Jun 06, 2010 6:25 am
Location: Monroe, IN
Motorcycle: 1996 GL1500 Motor Trike

GL1500 running rich

Post by JoeB27 » Tue Apr 28, 2015 7:16 pm

I bought a 1996 Trike a few weeks ago, noticed when I drove it home (120 miles) it really seemed to suck the gas. It started and ran fine cold, but after warming up and then sitting for about 30 minutes it was a bit hard starting. Would not start unless I opened the throttle about 1/2 way. Then ran fine again the rest of the way home.

After pulling into my garage at home and letting it idle, I could tell by the smell that it was running rich. So, off came the plastic and I dug my way down to the filters. Surprised to see that it had a K&N air filter on it. Cleaned and reoiled it. Replaced the Cruise and Sub filters (had a 1994 some years back so know a bit about 1500 maintenance and weaknesses, including those 2 foam filters). I did find that the K&N was nearly plugged...looked like critters had been nesting in there as there were a bunch of leaves, seeds, etc on the filter. After cleaning everything up, recharging the K&N and putting it all back together I went for a ride tonight. Still running rich and starting hard after warming up. It idles fine, right around 850. But I am getting only mid 20's fuel mileage! I know that trikes are harder on fuel than a 2 wheeler, but never expected mid 20's. I just feel that something isn't right.

So, where do you suggest I start? I know I'm going to have to dig back down to the carb area, but what do I look for?



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Re: GL1500 running rich

Post by robb » Tue Apr 28, 2015 8:54 pm

Might try adding Seafoam to fuel for internal cleaning. The guys with trikes that ride with our group have been overjoyed if they got 35mpg. Mid 20's in town is not uncommon from what I've seen, but general all around mileage of 30 is good.

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Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
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78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: GL1500 running rich

Post by virgilmobile » Wed Apr 29, 2015 9:21 am

Don't forget..after you sync the carbs,its a good idea to do a "idle down" adjustment on the 2 idle jets.

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