Question about 2000 Yamaha V Star Classic

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I have a 2000z xvs 650 At around 50 to 55 mph it tryes to back fire or spudder i have to come off the throttle a little for it to stop. what could it be

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  • Yamaha Master
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Clean the carburetta internals !

Posted on Feb 19, 2014

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SOURCE: XVS 1100 idle

at sea level there is 14.7 psi of air pressure, the higher you go the thinner the air. thus, need more air and less fuel. adjuster your idle air screw mixture.

Posted on Dec 27, 2009

edwar355
  • 71 Answers

SOURCE: 02 Yamaha xvs 650 dragstar classic that misfires when it warms up

First I would change all the spark plugs, and if that didn't make a difference then it sounds like the coil(s) are warming up and breaking down........when it starts to skip take a good pair of pliers with good rubber on them and pull each spark plug wire, when you get to the one that the running doesn't change then I would replace that particular coil

Posted on Feb 17, 2010

dmsr63
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SOURCE: hi i have purchased a yamaha xvs 650 vstar classic

popping on decel is from a lean condition. More likely from a lean, or too small pilot jet.

Posted on Jan 24, 2011

heimlich
  • 1978 Answers

SOURCE: hi i have purchased a yamaha xvs 650 vstar classic

If the mechanic did not replace the exhaust pipe gaskets in the head or on any connections between the head pipes and the mufflers , the air leaks could be igniting unburned fuel in the exhaust , causing the popping and back firing. Try replacing any gaskets in the exhaust system.
If you have a flat spot or hesitation when accelerating than you probably also need to rejet the carburetors. Bigger main jets should fix that condition. A jet kit may also contain differently tapered needles for the slides to help compensate for the change in the acceleration curve.

Posted on Jan 24, 2011

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Hi i have purchased a yamaha xvs 650 vstar classic 2003 model fitted with BUB exhaust pipes and i am getting poping and back fireing when decellarating and have been told the carby may need rejetting,could...


If the mechanic did not replace the exhaust pipe gaskets in the head or on any connections between the head pipes and the mufflers , the air leaks could be igniting unburned fuel in the exhaust , causing the popping and back firing. Try replacing any gaskets in the exhaust system.
If you have a flat spot or hesitation when accelerating than you probably also need to rejet the carburetors. Bigger main jets should fix that condition. A jet kit may also contain differently tapered needles for the slides to help compensate for the change in the acceleration curve.

Jan 24, 2011 | 2003 Yamaha XVS 650 Dragstar Classic

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Ive got a 650 xvs it started to missfire about 50-75 miles ago now its so bad i cant ride it (slowly got worse, i think it could be a carb diaphram ? i had to put it on res fuel for a short while, but this...


Tony, i would suggest first thing is to check the plugs and see if they are fouled, or if the front and rear are burning the same. when a diaphram goes bad it will make bike sluggish and not preform well above 1/2 throttle, and it can case bike to possibly foul a plug. so check the plugs first. then if you need more help just ask.

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