1995 Wolverine sputtering and bogging - Yamaha ATV Forum
 
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post #1 of 5 Old 08-14-2018, 11:29 AM Thread Starter
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1995 Wolverine sputtering and bogging

My Wolverine runs great when the fuel tank is almost empty. Once you fill it up it sputters and Boggs and may eventually come out of it. If I drain the fuel tank to almost empty it works great. Fill it back up and the problem is back.

I originally thought it was the non-oxy 91 fuel that I had in it so I drained it and ran it at almost empty until it was out of fuel and ran great. To eliminate bad fuel I put standard MN 87 octane in and filled it up and stuttered and bogged again. Drained the tank to almost empty and ran great again.

Thoughts?
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post #2 of 5 Old 08-14-2018, 04:28 PM
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possibly a bad needle and seat. the higher pressure with the greater volume is causing it to leak and when the pressure drops it can compensate. or a plugged vent in the fuel cap. with low fuel volume you have more air in the tank and it takes longer to create the vacuum that shuts off the flow
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post #3 of 5 Old 08-14-2018, 10:26 PM Thread Starter
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I was thinking plugged vent on the fuel cap by I could blow air through it and I tried riding with it partially off and was the same.

I’ll have to check the needle and seat for it next.

Thanks
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post #4 of 5 Old 09-16-2018, 04:27 PM Thread Starter
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It happen to be the needle and seat. Incase anyone is having the same issue.

Thanks Cory!
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post #5 of 5 Old 09-17-2018, 10:44 AM
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your welcome
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