Join Date: Dec 2019
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2014 Ninja 300 / Bike running at 50% power, seems like it runs on 1 cylinder
Hello everyone, this is my first post. I am part of SVRider and Ninjetta forum. I am happy to be part of this new forum.
Main symptoms: Bike is running on 50% power with the occasion 100%. When you power it on, it turns on fine, after about a minute, RPMS drops significantly. Causes the bike to go from below 1k rps to 2k rpms. Leave it long enough and it will turn off. When you do full throttle in N, the bike SLOWLY climbs its RPM scale.
Modification done to it: Exhaust only and K&N Air Filter. Nothing else. Slip on.
Issue started about 2-3 weeks ago. Bike was running great, I would notice it would idle kind of weird after the exhaust swap, idle would very slight drop but nothing that caused me to have any concerns. It wasn't until I performed a tune up on that the issue got really bad. I did an OIL change on it, I used Rotella oil as I like to do my oil changes quite frequently. I added iridium spark plugs on it. Everything worked great for about 50 miles and that's when the bike would run on 50% power. See video. I thought, OK maybe it did not like the iridium sparks plugs. I added stock spark plugs, worked just fine for about 200 miles and now I have the EXACT same issue.
I am about to take the sparks plug off again. What should I be looking for? Could my COILS be bad? The bike barely has 6k miles on it.