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Discussion Starter #1
i have a 2015 yfz450r
bike has a vortex, barkers exhaust.
it has an idle issue, when bike is first started it will idle fine for about 30 seconds , after that it will die. after that it will not start with out giving it throttle. if you give it throttle it’ll run, bike runs completely fine when in the throttle, once at idle it’ll die. sometimes it’ll do it other times it won’t. not sure where to go with this. any suggestions?
 

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So others can help you you need to give more info. Has it ever worked before with said mods? Spark plug is it original assembly line plug?
 

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Discussion Starter #3
yeah rode it with these mods for a couple years with no issues, and i have already changed spark plug with new original plug
 

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Have you pulled out the fuel pump and looked to see if the pickup filter appears to be free of junk? Pump sounds strong when 1st turned on? Stock fuel cap with stock vent hose? Or those shorty ones with aluminim valve things?
 

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Discussion Starter #5
i have not check fuel
pump screen, sounds strong when key is switched on, stock fuel cap vent, it is not clogged or anything. i will check screen next
 
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