ninjette.org - View Single Post - 300 seems to be running at 50% power. Severe idling problems. Turns off

F9zSlavik · December 9th, 2019, 12:07 AM

Wasn't sure how to title this thread

https://youtu.be/n0b-8LUPogk

Main symptoms: Bike seems to be working on 1 cylinder. 2nd cylinder works but struggles to stay on. Hard to describe see video. When you power it on, it turns on fine, after about a minute, RPMS drops significantly, causes the bike to go below 1k rps and occasionally will jump 1.5k-2k (normal) rpms. Leave it on long enough and it will turn off. When you do full throttle in N, the bike SLOWLY climbs its RPM scale. Sometimes it will climb normal and give out.

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 went ahead and took out the Sparks Plugs and the Coils.

See pictures below. I see what looks like GUNK on the coils, they look like rust and gunk. Is that normal? That wasn't there 2 weeks ago when I worked on it. The spark plug has about 300 miles on it and they look like they already have a few thousand miles on it.

https://drive.google.com/open?id=1J7...QfYwUhaLYJ2kxy

https://drive.google.com/open?id=1JA...ZgTdFoMfjNWeGN

I regret selling my Ninja 250 :,(

December 9th, 2019, 12:07 AM	#1
F9zSlavik ninjette.org member Name: Gabriel Location: San Diego Join Date: May 2019 Motorcycle(s): Ninja 250 2005 / SFV650 2013 Posts: 41	300 seems to be running at 50% power. Severe idling problems. Turns off Wasn't sure how to title this thread https://youtu.be/n0b-8LUPogk Main symptoms: Bike seems to be working on 1 cylinder. 2nd cylinder works but struggles to stay on. Hard to describe see video. When you power it on, it turns on fine, after about a minute, RPMS drops significantly, causes the bike to go below 1k rps and occasionally will jump 1.5k-2k (normal) rpms. Leave it on long enough and it will turn off. When you do full throttle in N, the bike SLOWLY climbs its RPM scale. Sometimes it will climb normal and give out. 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 went ahead and took out the Sparks Plugs and the Coils. See pictures below. I see what looks like GUNK on the coils, they look like rust and gunk. Is that normal? That wasn't there 2 weeks ago when I worked on it. The spark plug has about 300 miles on it and they look like they already have a few thousand miles on it. https://drive.google.com/open?id=1J7...QfYwUhaLYJ2kxy https://drive.google.com/open?id=1JA...ZgTdFoMfjNWeGN I regret selling my Ninja 250 :,(