new to me and running very rough 1990

Information and questions on GL1500 Goldwings (1988-2000)
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tim phelps
Posts: 3
Joined: Sun Mar 04, 2018 10:32 pm
Location: somerset, ky,
Motorcycle: 1990 honda goldwing 1500

new to me and running very rough 1990

Post by tim phelps » Fri Apr 13, 2018 3:58 pm

just got this and it runs rough, coughs and splutters on take off and when trying to excellerate . it does have a "sweet spot" once moving between 2500 and 4000 rpms. it idles rough until it really warms up, it idles almost 1500 rpms. while at idle pull in the clutch put into first and without releasing clutch it starts running rough and rpms drops and tries to die. any ideals ?

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Posts: 279
Joined: Mon Oct 23, 2017 10:40 am
Location: Smokey Point, WA - USA
Motorcycle: 2000 GL1500 SE
2005 Honda CRF230F

Previous bikes:
2003 Honda Ruckus
1993 Honda Elite SR
1986 Honda CR125R
1979 Yamaha GT80

Re: new to me and running very rough 1990

Post by Stew » Fri Apr 13, 2018 6:16 pm

Rough idle until hot, idles high... that sounds like symptoms of a vacuum leak to me. There are a lot of vacuum lines to check, that would be a great starting point.
Winging it every chance I get 8-)

19,119 miles when I got it from dad Oct 15, 2017 --- 22,872 miles and counting as of June 27, 2018!

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Posts: 136
Joined: Tue Jul 11, 2017 11:43 pm
Location: Morgan Hill, CA.
Motorcycle: 1991 GL1500 Interstate (Cinnamon Beige)

Re: new to me and running very rough 1990

Post by bluthundr31 » Sat Apr 14, 2018 2:06 am

The "new-to-me" part makes me wonder how much solid "background" you have on that new ride. Since that beast is 27-28 yrs old (like mine), get every ounce of background on it that you can, it'll help us troubleshoot your problem.
As stated previously, checking the vacuum lines sounds like a solid place to start. Could possibly be the spark plugs too tho, , , or a clogged/dirty Air filter, , , or bad fuel/carbs. , , , Let us know if the vacuum lines are OK after you check em. We'll go from there

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