Bending spark plugs

Discussion in 'Motor, Transmission, Electrical, Intake & Exhaust' started by Casey350, Jul 2, 2019.

Yamaha Raptor 350 & Warrior Forum

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  1. Jul 2, 2019 #1

    Casey350

    Casey350

    Casey350

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    I've been having some issues lately with my warrior, I did the airbox mod and K&N filter with clamp kit, I also installed a full dg Krome power exhaust with a DJ jet kit based on their recommendations with an addition of a 45 pilot jet. I rode it once and had a ton of backfiring and high idle, found broken top motor mount and 2 cracks in the boot. Just replaced the motor mount and boot both OEM. Bike seem to be running well but I removed plug to swap with a new one, color looked good but it looked as if the top L portion was slightly bent. The gap appeared smaller than out of the box. I doubt there would be any tip left if it was hitting the piston but what could cause this issue?
     

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