October 13th, 2018, 06:38 PM | #1 |
ninjette.org newbie
Name: Michael
Location: Florida
Join Date: Oct 2018 Motorcycle(s): Ninja 250 Posts: 4
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2006 Ninja 250 Engine ticking between 2k-4k RPM
Hello all,
I have a 2006 Ninja 250 that I have had for about a month now. Sitting at 10,333 miles. I got the bike at just around 9,900 miles, give or take. On my last ride, I noticed a ticking sound coming from the front side of the engine that I had not noticed before. This sound only seems to come on between 2k-4k RPM and will 'typically' go away once it gets back to idle, some times it takes a moment. Beyond the sound, the bike runs just fine as far as I can tell, but I'd certainly like to make sure it stays that way. Here is a video of the sound in action - https://streamable.com/8mmwz Edit: Here is another video, emphasizing the noise - https://streamable.com/4fid8 Edit: I see in the video that the idle appears to be above 1,500 RPMs, bad camera angle. I have it dialed in at 1,400-1,500. For what it is worth, I have not adjusted the valves yet, I know that is recommended at 10,000 miles and I will be getting around to that. However, given the sound, anything else I should be looking at when I do that? |
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October 13th, 2018, 07:46 PM | #2 |
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Name: -
Location: -
Join Date: May 2009 Motorcycle(s): - Posts: A lot.
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You've definitely got a "ticking sound" there, although I would say it's more of a "clatter". Good job on the videos, often people post cell phone videos that are so bad you can't hear the noise they're talking about.
It sounds like something's up with the engine's Cam Chain. In the video it sounds like the Cam Chain isn't being properly tensioned which means it will lash when the engine RPMs decelerate. When you rev the engine the Cam Chain gets pulled into an smooth, organized form, but when the engine slows it sends a shock through the Cam Chain and it gets disorganized and lashes for a while, then slowly smoothes back out. I think your first troubleshooting step should be to remove, clean, re-grease and properly re-install the Cam Chain Tensioner (following the Service Manual, base manual, procedure Chapter 4, pages 4-7 to 4-8, instead of just guessing at how the thing is supposed to be handled). It could be as simple as a tensioner thats not doing its job. |
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October 13th, 2018, 08:20 PM | #3 | |
ninjette.org newbie
Name: Michael
Location: Florida
Join Date: Oct 2018 Motorcycle(s): Ninja 250 Posts: 4
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Quote:
I think you are right. After I posted this I did some research, the sound from my end definitely sounds like a chain moving around so my research lead to the CCT causing a bit of a fuss, evidently it's a super common issue with these bikes. So I lead I popped off my CCT, cleaned it, lubed it up real nice (with engine oil), and reinstalled as per procedure and the sound has disappeared. Fortunately the CCT looked to be in good shape, no burring or scoring, just the oil that was on it looked a bit old and gummy, which is strange the oil in the engine is only a couple of months old. Oh well, I know now that this is something to keep a constant eye on. Thanks for the reply! |
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1 out of 1 members found this post helpful. |
October 13th, 2018, 08:29 PM | #4 | |
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Name: -
Location: -
Join Date: May 2009 Motorcycle(s): - Posts: A lot.
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Quote:
I use Lucas Engine Assembly Lube when I refurbish the CCT on my '05 EX250. |
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