Question about 2006 Yamaha V Star 1100 Silverado

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Hard starting when cold, runs rough at idle and any steady speed.

To start it when cold, I have full choke it will satrt after a few trys, then it stalls. Try to start again, it will start and stall, after several trys it will run slow and stall if given gas. After getting it to stay running even with giving it gas, it runs rough. Feels like it it miss firing at an idle and running at any steady speed, when giviong it gas its runs up to speed without a problem, Please Help, I have changed the sparks plugs, the gas, the gas filter and the air filter without any improvements, what should I change next???

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  • esimao Nov 27, 2008

    The best advice I have received yet, I will take it a Yamaha dealer to clean the carbs, It will be awhile before I can do that. I will let you know how it comes out, Thanks Alot, Ed...

  • gasgom May 24, 2009

    You mentioned you can prevent gummy mess using fuel stabilizers - do you prefer a brand, if so which one? Also, how does one keep the carbs empty when bike is about to be stored?

  • Anonymous Mar 17, 2014

    turns over good... and smells like it is flooding after trying too start it a few times with the choke on when its cold. just doesn't sound as if its trying to fire.



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Your carburetors need to be cleaned. The pilot jets are at least partially plugged.

If you are comfortable doing this yourself, you need to remove the seats, fuel tank, and air induction system before you will be able to get the carbs out. Be carefull when removing the fuel tank, there is a wire harness that will need to be un plugged from it to remove it. The wire harness plug runs under the plastic tray under the seat. There are 3 plastic rivits that will need to be removed to get to the plug. The carbs come out as a pair, and can be tough to get back in the boots.

You need to remove the float bowls, remove the jets, and blow carb cleaner and compressed air through them all. The pilot jets are most likely the only culprit, but you might as well clean everything if your going to all the trouble. You should also blow carb cleaner and compressed air through all of the other passages while your at it. Make sure that you can see through the jets and there is no debris left in them. Make sure to clean the floats, needle valves, and float bowls as well.

Then re-assemble

This happens when the bike sits for long periods. The fuel we get now days has a very short shelf life before it goes bad. Fuel oxydizes over time, and it happens even faster in a small amount that is vented which is exactly as it is when its in the carburetors of a motorcycle. When fuel oxydizes and evaporates, it leaves a gummy mess behind. The pilot jets are the smallest passages that sit in the fuel, so they naturally plug first.

You can prevent this by keeping fuel stabilizer in your fuel when ever the bike will be sitting for long periods of time. Myself personally, when I store one for the winter, I like to leave the carbs empty.

Posted on Nov 26, 2008

  • Joshua Denney
    Joshua Denney Jan 10, 2015

    I was having the same problem about 2 months ago and clean out my carbs just as you described above. When I went to start the bike after the carb clean it cranked right up and sounds great, the only problem is now I have a check engine light on. Any suggestions or comments?!?!?!



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