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!
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.
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
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....
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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.
Any oil that is JASO MA certified motorcycle oil. 10w-40 for cold climate. 20w-50 for warm climate/touring.
Car oils use different additives. Do not use any oil that says Energy
Conserving on the label . It will shorten the life of your wet clutch
and transmission gears. If you use Synthetic oils, they will help your
bike run cooler and shift easier.
The Yamaha Roadstar has a dry sump oil system. What this means is that the oil is stored in an oil tank to reduce the size of the engine. By storing the oil in the tank (which is under the seat and has the filler cap/dipstick, the engine does not need a sump under the crankshaft to store the oil. In this type of system the oil is pumped back to the tank after making its rounds through the engine. When you shut the bike off the oil will settle in the engine until you run the engine. The procedure to check the oil is to warm up the engine and allow it to idle for approximately 3 minutes. Do not rev up the motor during this time as it will cause the oil level to not read correctly. After shutting off the motor, check the oil level and adjust it to keep it in the proper level on the dipstick.
Hi Dickduchemin, I am sorry you can't find the first and best tool you ever bought for your Yamaha but despair not for a mere $15.00 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day. 2006 Yamaha Motorcycle Service Repair Manuals