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'90 GL1500 SE sputtering

834 Views 8 Replies 7 Participants Last post by  da_bull, 
tommckay
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My Wing just started this, frustrating.

I rode it last Thursday the 17th and it ran perfect. Then went away for the weekend. It rained yesterday so I didn't ride. I get it out today and it started fine, but when I took off down the road I experienced "holy crap! what happened?"

The bike sputters (read as bad missing) from a stop and then wakes up and runs well as I accelerate, but then misses intermittently at cruise. When you crank the throttle from cruise, it stumbles a bit before it takes off again.

I just had a complete tune up done on it this last spring, and it has run great all summer. Now from 1 ride to the next, good to bad.

Any Ideas?
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hummer5205
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Sounds like to me you some bad gas !Maybe some water in it !I would get some HEET (gas line drier) run some sea foam 1 half for a tank & 1 half for the other !Maybe check the timming belts/check for vacume leak ! Good luck in this matter !
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treker8098
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Keep an eye on the fuel shut off valve near the gas cap. I do not know of any tests but there is a thin diaphragm that is accuated by the vacumm line. If there is a small tear the fuel will not flow very well. Not saying this is it, but something to keep in mind. They are easy to repair.
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SpiderBob
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How is your gasfilter?
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tommckay
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Fuel Filter was changed with an OEM Honda unit at tune up. I hope it didn't fall apart like other's I read about. Being OEM I would think not, but stranger things could happen I guess.
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D
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The engine requires three things to run. Fuel, spark and air.

I would first rule out the fuel:

1. Put good fresh gas in the tank.

2. Check the auto fuel shut-off valve.

3. Run some Sea Foam through the system.

Next check for spark at each spark plug.

Next check the air filter and the air duct operation (at the front of the air filter housing).
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zimmerleemark
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all good info. i also thinking water or vacuum leak. good luck,

mark:waving:
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tommckay
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I've never tried Seafoam before, but I've heard many say it's some good stuff. What's the recommended way to run it thru?
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da_bull
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Read the can, for exacts, but I used 1/2 can for a full tank and again a full tank for the other half can. Dont let it sit in your tank, use it when you know you are going to run the tank through. Worked wonders for me.
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