2013 yfz450r - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums
 
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post #1 of 4 (permalink) Old 11-09-2019, 05:13 PM Thread Starter
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2013 yfz450r

Just picked up two 2013 yfz450r that have been sitting for about 5 years fuel pumps are out I picked up a quantum pump ran great for about a month then started sputtering an back firing not sure what to do any help would be greatly appreciated
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post #2 of 4 (permalink) Old 11-12-2019, 11:22 AM
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Check the fuel pump electrical connections in the tank or the injector would be my best guess.

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post #3 of 4 (permalink) Old 11-13-2019, 12:32 PM
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My 2012 yfz450r did this a couple of weeks ago. It would sputter/pop/backfire while revving it. Turned out to be the stator and pickup coil. Fixed it and now it runs great. Hope this helps!
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post #4 of 4 (permalink) Old 11-17-2019, 01:42 PM Thread Starter
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Figured it out was clogged fuel injector cleaned it runs like new now
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