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dannyb · May 27th, 2015, 12:15 AM

Hi everyone,

I just got a stock 2005 Ninja 250 with around 7,000 miles on it. It has a problem where it idles high (around 3000rpm) sometimes, and I'm wondering what you guys think the problem might be?

Here is a video of the issue:
https://youtu.be/-gNxZgNplfM

Link to original page on YouTube.

As you can tell, it idles pretty normally until it warms up (temp guage in the middle), then it will go up to around 3000rpm. If you rev the bike, it will fall back down to normal (~1500rpm) and then go back up to 3000rpm after a few seconds.

The previous owner didn't do any maintenance except cleaning the carbs, apparently. I'm assuming it was broken in properly by the original owner, but I don't know for sure. I'm the third owner.

My friend and I took off the carbs, removed the caps on the idle mixture screws and set it to 2.5 turns. This didn't really fix the problem though. We also looked at the air filter, which seemed fine. Next, we're planning on cleaning and syncing the carbs, checking for vacuum leaks, as well as adjusting the valves. Let me know if there's anything else we should look in to.

Thanks!!

May 27th, 2015, 12:15 AM	#1
dannyb ninjette.org newbie Name: Danny Location: Vancouver Join Date: May 2015 Motorcycle(s): 2005 Ninja 250 Posts: 1	High idle issue Hi everyone, I just got a stock 2005 Ninja 250 with around 7,000 miles on it. It has a problem where it idles high (around 3000rpm) sometimes, and I'm wondering what you guys think the problem might be? Here is a video of the issue: https://youtu.be/-gNxZgNplfM Link to original page on YouTube. As you can tell, it idles pretty normally until it warms up (temp guage in the middle), then it will go up to around 3000rpm. If you rev the bike, it will fall back down to normal (~1500rpm) and then go back up to 3000rpm after a few seconds. The previous owner didn't do any maintenance except cleaning the carbs, apparently. I'm assuming it was broken in properly by the original owner, but I don't know for sure. I'm the third owner. My friend and I took off the carbs, removed the caps on the idle mixture screws and set it to 2.5 turns. This didn't really fix the problem though. We also looked at the air filter, which seemed fine. Next, we're planning on cleaning and syncing the carbs, checking for vacuum leaks, as well as adjusting the valves. Let me know if there's anything else we should look in to. Thanks!!