Question about 2006 Yamaha Road Star Midnight Silverado

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Carb puking gas

2006 Yamaha Roadstar Midnight Silverado 1700, 6000 miles, completely stock, pukes gas from carbureter when the engine is hot. Bike will be hard to start, run for a few seconds then die and gas gushes out of airbox. Holding throttle wide open when starting will get it started and burn off excess fuel. Only happens when motor is hot. Also has clattering sound from motor when hot and accelerating and cruising at higher speeds. Sounds like pinging. Have been told that the fuel is boiling in the bowl and/or fuel line because of position of carb. Yamaha says use fuel from large domestic producers and use premium gas. I say bull. Can find no recall or tech service bulletin. Factory says they are aware of problem and its "fuel quality" problem, not theirs. Star Owners website say there have been fires and to report to NTSB. Help!

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  • Wayne Wilson Feb 01, 2009

    I appreciate the response but it didn't tell me much. Pinging noise is the springs? Which springs? What's causing it? How is it fixed?



    No, we use mid-grade fuel.

  • knudsent Mar 08, 2009

    I have a 2006 yamaha roadstar. Sometimes when I start it gas comes out the airbreather with I think is an over flow but when this happens it will kill the bike. It don't do it all the time but more when it is hot. Another wierd thing about it is I will start the bike when it is leaning on the kick stand and it will run fine but as soon as I stand it up to ride it, a lot of gas will pour out and kill the bike.

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I had this same problem. What I discovered was the float needs adjusted on the carb. I set mine lower inthe bowl and it stopped the leaking. Reason for this happening is on hot days the fuel in the bowl will boil. This boiling action dumps in more fuel and the carb spits it out the air breather.

Posted on Sep 23, 2009

  • Tom christophersen Jun 22, 2013

    stick with high octane or regular unleaded fuel, mid grade fuels generally gain octane ratings with alcohol and boils easier, causing many issues in warmer weather

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I have a 2007 Yamaha 1700 midnight star ,had the same problem.this is how you fix it,i put a mikuni hsr 42 carb on it,easy kit42-11,high flow petcock,longer pull cable,and removed the fuel pump.after this mod you will have no problems with gas dumping out ever again.WARRNING!!! YOUR BIKE WILL GROW SOME BALLS,IT WILL HAVE INSTANT THROTTLE RESPONCE,IT WILL FILL LIKE IT IS FUEL INJECTED.IF YOU ARE NOT CAREFULL THE BIKE CAN AND WILL STAND UP ON YOU IN 1ST GEAR!!! NEED ANY MORE MODS LOOK ME UP ON FACEBOOK,BRYAN BALZANO

Posted on May 05, 2013

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I have a 2002 Roadstar 1600. When I turn the key on gas comes gushing out of the air filter. I took the air filter off and tried it. Same thing gas comes pouring out of what looks like an small air hose. If anyone can help I would really apprieciate it....

Posted on Mar 16, 2010

  • Divis L Norris Nov 05, 2012

    Sorry brother i have the same problem.Yamaha dealer said its the alcohol in the gas.guming things up.

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Yep fuel problem are you using hi octane /pinging noise is springs

Posted on Jan 31, 2009

  • charles lill Feb 01, 2009

    sorry burning late candle/ what i meant was valve springs since the bike is completly stock you should try higher octane fuel 87-93 would be a good start depending on the fuel quality in your area you may still get some noise from the engine when hot but this is nothing to worry about this should cure the fuel gush



  • Tom christophersen Jun 22, 2013

    another thing to keep in mind, mid grade fuels gain octane ratings with alcohol and boils easier. stick with regular unleaded or high octane only. and yes , be sure of your fuel level setting in the carb bowl . check it with the hose method on the bike while bike is upright and level.

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1 Answer

What is the oil capacity of the 2006 roadstar silverado?


The Road Star takes 4.3 qts which is 4.07 liters.

In my experience, MOST Yamaha engines have the oil capacity stamped either near the oil filler cap, or if it has one, near the fisheye inspection glass.

The best advice I have seen to date states the following: Having replaced and tightened the drain plug, remove the dipstick and puur in half the oil. Note that this bike has an oil tank, so having added 2 litres or so, put the dipstick back in and tighten it. Start the bike and allow it to run for around 15 seconds to allow the oil to pump from the oil tank to the engine crankcase. Shut the bike off and add the remaining oil before replacing the dipstick again and checking for leaks.

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I have a ttr 230 with twenty hours on it. It was hard to start the other day and will NOT start today. I took carb off and drained it, checked for debris and looked at the float and it seemed fine (there...


Gas running out the puke tube indicates debris in the float valve(Stuck Float)
some just tap the side of the carb and it passes through, some take the carb apart, clean it and reassemble it.

In your case, remove the carb, remove the bowl from the carb., remove the float pin, then the float, and the float valve/needle is hanging on the float tab.

now blow through the tube that the gas line hooks to with compress air to clean out that passage.
air should blow out the hole that the float valve was in.

Reassemble.

You will not have to remove any jets to clean the float bowl chamber.

i suggest you blow through every opening on that carb while you have it off to make sure nothing is clogged.

Your float will now shut off the gas flow like it should, and quit coming out the puke tube.

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http://216.37.204.206/xtremepowersports/Yamaha_OEM/YamahaMC.asp?Type=13&A=509&B=1

Go here and they are $14.00 should be available at any Yamaha dealer.

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