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Blueninja2007 · March 6th, 2018, 07:40 AM

Hello everyone, this is my first time posting on my new account, my ninja 250 (88-07) model sputters and suddenly looses it power between 7500 - 9000 RPM and then once I hit 9500 rpm all my power come right back, I have to down shift to get my rpms to 10k to go above 60. This has been an on going issue for awhile now. I have cleaned both carbs twice, cleaned the air filter and changed the spark plugs, drained and cleaned the tank 3 times and I have run seafome threw the engine more times than I can count. Nothing seems to work and I really don't like having to take my engine to redline to drive above 60, the bike used to run great and have all the power in the world, now it's like a moped once you go above 60 and leaves me no choice but to downshift to go faster and then return to the lower gear to hold my speed. I need help to determine the problem. This ninja has been well cared for and well maintained and is kept indoors when not in use. Thanks-Josh.

March 6th, 2018, 07:40 AM	#1
Blueninja2007 ninjette.org newbie Name: Josh Location: Orland Maine 04472 Join Date: Mar 2018 Motorcycle(s): 2007 Kawasaki ninja EX250 Posts: 4	Ninja 250 power loss at high RPM Hello everyone, this is my first time posting on my new account, my ninja 250 (88-07) model sputters and suddenly looses it power between 7500 - 9000 RPM and then once I hit 9500 rpm all my power come right back, I have to down shift to get my rpms to 10k to go above 60. This has been an on going issue for awhile now. I have cleaned both carbs twice, cleaned the air filter and changed the spark plugs, drained and cleaned the tank 3 times and I have run seafome threw the engine more times than I can count. Nothing seems to work and I really don't like having to take my engine to redline to drive above 60, the bike used to run great and have all the power in the world, now it's like a moped once you go above 60 and leaves me no choice but to downshift to go faster and then return to the lower gear to hold my speed. I need help to determine the problem. This ninja has been well cared for and well maintained and is kept indoors when not in use. Thanks-Josh.