Question about Yamaha Motorcycles
This is apparently not a motorcycle and you do not advise what year it is which is very important due to varying systems. BUT if it is at all electronic it sounds like a problem similar to motorcycles and the problem in such a case is often the engine temperature sensor defective and not reading or not reading temperature information correctly and therfoer not sending correct and required information to the computer that controls engine operation.
Posted on Dec 11, 2014
Testimonial: "found the problem replaced carb. I could replace cheaper than rebuild. thank you, Terry"
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Posted on Jan 02, 2017
Since you have thrown the entire ignition system at it, let's think about fuel. If you were running out of gas it would act as you described. I would start by removing the float bowl. Be careful not to spill any gas because we want to look at the level. It should be over half full. Check the float movement. You should be able to push it up without resistance. Looking from the bottom remove the phillips screw that retains the float axle and the float and needle valve should fall out. If the needle valve has three sides or if the rubber tip is worn, replace it. The 3 sided valves have a tendancy to stick closed and all dealer stock should be the 4 sided version by now. After you re-install the float, leave the bowl off and follow the small vacuum hose from the petcock to the carb. Pull it off at the carb end. Look to make sure it isn't damaged. **** lightly (sorry) or use a vacuum pump on the hose. With the petcock on and gas in the tank, a healthy stream of fuel should pour from the needle valve. If not, the petcock diapragm is shot. If none of this helps, take it for a ride and when it acts up, crack the fuel cap loose and if it takes off the vent in the cap is malfunctioning.
Posted on Jan 05, 2009
hi mate have you tried changing plugs because as the plugs get hotter the start to break down then when they cool the fire back up try this
Posted on Aug 26, 2009
Very important... valves get out of adjustment and are easy to set. This is where I would start FOR SURE. Check out www.buggiesgonewild.com and an example of how to do it on EZ GO 295 http://www.buggiesgonewild.com/ezgo-gas-tech/1196-ezgo-295-350-engine-valve-adjustment.html
Posted on Jul 20, 2010
SOURCE: My 1200 sporster when gets
It sounds more like a fuel problem to me. If I had to guess, I'd say that for some reason your bike has started to run lean. The lean mixture is causing your engine to run hot. The heat from the is "perculating" the fuel in your float bowl and causing it not to start. I've seen it before on race cars.
The mixture on your bike may be running lean for any fo several reasons. You could have trash in one of the jets in the carb or you could have a vacuum leak. I'd put my money on the later. There is a hose that comes off the backside and feeds vacuum to the VOES switch. Make sure this hose is intact and doesn't have any cracks in it. I'd also replace the intake gaskets at the heads and the carb seal provided the carb is the original CV carb.
If the carb has been changed to something else, there could be other problems as well. Also, make sure your not running gasoline that has a greater than 10% ethanol mixture in it. The greater the percentage of ethanol (alcohol) the leaner the engine will run.
Posted on Nov 16, 2010
Testimonial: "Thanks mate wasn't thinking of that will try and let you know Cheers."
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