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Bike loses power and dies. (Read 22 times)

Noble_Savage

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Fresno, CA

Bike loses power and dies.
08/23/22 at 21:24:24

I've been having this problem for a while. I'll be riding at speed with no problems then I'll lose power for a few seconds then the bike dies. It feels similar to running out of gas, but the tank is full. If i pull over or coast for a few seconds then restart it will run fine for a few mins then it happens again. First time I could tell the battery was struggling so i had it tested and replaced the battery. It was fine for a couple days then happened again. Pulled the tank and carb, checked my lines, cleaned the carb, etc. it ran fine for about a week then happened again today, but i managed to limp home by keeping the enging revved at slow speeds or while stopped. Now i'm thinking it could be the stator/generator. Any thoughts?

2016 S40 15k miles; Emgo reverse cone muffler, removed airbox door, rejet, Raptor petcock.

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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28890 L.A. California Gender:	Re: Bike loses power and dies. Reply #1 - 08/23/22 at 22:18:58 1st thing to look at is the petcock... try turning it to prime. 2nd is your battery charging? rev it up to 4000 rpm and you should have near 14v. If you don't have a voltmeter... get one.
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Noble_Savage YaBB Newbies Offline I know a thing or two about a thing or two. Posts: 9 Fresno, CA	Re: Bike loses power and dies. Reply #2 - 08/24/22 at 07:52:00 I have a raptor petcock and ran it on RES with no improvement. I will try the voltmeter though. Thanks.
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SpamyToo

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Re: Bike loses power and dies.
Reply #3 - 08/24/22 at 08:32:43

Thats a tough one to troubleshoot without seeing it in person.

If you have to keep it alive by keeping the revs up that sounds like its missing on its firing. If it was starving for gas it would die anyways no matter how high you tried to rev it.

This bike has a single plug, so any electrical gremlins will kill it just like your out of gas. So I could be related to anything on the run circuit. Since you said you can initially ride with no problems I tend to think it might be related to the bike heating up, or vibration.

Id check coil wiring, plug wire, control switch wiring. Change the plug. Verify grounds. I remember the stupid horn wiring being important for some reason, cant remember why but it supplies important power or is a needed ground or something like that.

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