85 Interstate

Information and questions on GL1200 Goldwings (1984-1987)
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Old Goat
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Joined: Tue Sep 06, 2011 8:33 pm
Location: Waynesville, OH
Motorcycle: 1985 Goldwing 1200 Interstate

85 Interstate

Post by Old Goat » Tue Sep 06, 2011 8:39 pm

My 1985 goldwing interstate 1200 will start and run well for 10-15 minutes before shutting itself off. If I try to start immediately after, bike backfires but won't start. Needs to sit 30 min. before restarting. This bike sat in a garage unridden for 2 years prior to my purchasing it. Runs smooth when it runs! I can work on about any machine but am new to working on motorcycles. Would appreciate any help.

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Re: 85 Interstate

Post by HALBUDD » Tue Sep 06, 2011 8:52 pm

First welcome old goat if your bike was setting for two years here are a few things you should check. 1 gas tank for rust or varnish 2 fuel filter 3 timing belts 4 oil and all fluids replace them all . You can also try running sea foam in your gas to help clean your carbs These are just a few things I would start with. Oh and belts,belts if you dont know when they were changed then change them. Good luck Hal P.S. also check your tires !
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Re: 85 Interstate

Post by TonyF » Tue Sep 06, 2011 9:06 pm

You have a bad ignition pulse generator. The Honda service manual will tell you how to test and replace the pulse generators.

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Re: 85 Interstate

Post by starfleetengineer » Mon Sep 12, 2011 11:08 am

TonyF wrote:You have a bad ignition pulse generator. The Honda service manual will tell you how to test and replace the pulse generators.
I would agree. Sounds like the pulse generator has failed or is failing. It would be like a module on a can. When it gets hot it starts to break down and you lose your timing and or spark.
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Re: 85 Interstate

Post by WingAdmin » Tue Sep 13, 2011 5:48 pm

You also might want to check that you haven't got a clogged fuel tank cap that is developing a vacuum. If the bike quits, and you open the fuel tank (accompanied by a whoosh of air), and the bike starts right up after that, then that's your problem.

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