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Craig_Bendickson Craig_Bendickson
9/14/2018 7:02 PM

I’ve had a few problems with plugs fouling on the starting gate lately. The bike will run awesome for awhile and then all of a sudden will start fouling plugs. Plug looks fine and dry each time I remove it and starts first kick when I install a new plug. I’ve changed the pilot jet to one step leaner and have tried air screw numerous times but doesn’t seem to clear it up. I run 92 octane pump gas at 50:1 with yamalube “R” oil. Anybody else have issues with these bikes?

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Racer_Twentynine Racer_Twentynine
9/14/2018 8:50 PM

I learned the hard way......
CdI box, yeah its an expensive part but i chased the exact symptoms you described for a while and also on a KTM65.
I hope you arent buying the "KTM" plug for $16 each. Autoparts stores have the same plug for $3 it just comes in the NGK box intead of an orange box.

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moto551 moto551
9/15/2018 6:53 PM

Stop running yamalube.

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Paw Paw 271 Paw Paw 271
9/16/2018 4:26 PM

Do an ohms test on your coil, both primary and secondary sides. It could be breaking down when it gets warm.

Paw Paw

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Richard Tease II Richard Tease II
9/16/2018 7:07 PM
moto551 wrote:

Stop running yamalube.

Why? Yamalube 2R is made in France , smells like Motul 800, looks exactly the same as Motul 800 and burns the same smell as Motul 800 its also cheaper.

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9/16/2018 8:48 PM
moto551 wrote:

Stop running yamalube.

Richard Tease II wrote:

Why? Yamalube 2R is made ...more

Are you in the US? The Yamalube-2R in the US looks and smells nothing like Motul 800. It's not even full-synth. It's synthetic blend.

Powerband in every gear !

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Dixon893 Dixon893
9/25/2018 4:23 AM

Was having a similar problem with my boys 16, put in a jet kit and switched to 90 octane rec gas from the pump premium. I'm using amsoil dominator and haven't had an issue, might be luck idk.

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XC706 XC706
9/25/2018 8:12 PM
Craig_Bendickson wrote:

I’ve had a few problems ...more

Are you running Shell Nitro fuel by chance?

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