br9es or br9ecs 600 srx

Don't forget if you run an es plug you have a chance a detonation. Not only will you damage your piston but your crankshaft rod as well. Detonation is when your piston isn't fully (only a fraction) at the top and you get combustion.

Like we are all saying clean your Carbs , check your fuel mixture screw, verify all jets, make sure they are stock (if motor is stock), make sure choke is fully off... These are all the things you need to look at.

I guess you can run ES plugs but it's a chance your'e taking, at least run premium fuel, it put's better ods on your side. ;)!
 



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