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ditchbanger78

2002 yz426f cutting out

5 posts in this topic

Hey guys I have a 2002yz426f I'm having problems with, I love the bike tons of power and I got it for cheap. But just recently its starting to cut out at low RPMs like around tight corners at the track or really just low RPMs in general, it only happens after its warm. And it seems like an electrical problem because it just stops running not like bogging out and dieing. It just quites and when it does its extremely hard to start like its flooded, Which also leads me to think its spark. I bought a new plug but haven't put it in yet, figured I'd start with something easy. Any ideas? Much appreciated. Thanks

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Sounds like your fuel mixture might be too rich. I'm not an expert on it though. But grey will probably comment here. Greys pretty good with this.

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i don't think it is the fuel mixture because I hooked my bike up to an EGR machine and found out it was running off the charts rich and did some tuning from there and the cutting out problem never changed. im really leaning toward it probably being electrical, has anyone ever had a prob with the ignition coil say after the bike warms up and the coil is warm it starts cutting out?

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... has anyone ever had a prob with the ignition coil say after the bike warms up and the coil is warm it starts cutting out?

 

Yes.  Try testing the coil resistance while it's acting up.  Stator coils also.

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