February 9th, 2017, 01:28 PM | #1 |
ninjette.org newbie
Name: James
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Weird Rattling Noise From Engine At Startup When Cold
Hello everyone, I have a 2007 Ninja EX250r with about 1600 miles on it. I have noticed that upon startup when the engine is cold I hear an odd rattling and ticking noise that sounds like its coming from the lower end of the engine (it almost sounds like marbles rattling around) that eventually goes away as the engine warms up. This typically only happens when it is 40 degrees outside or colder. I recently changed the oil and that didn't make the sound change much. Let me know if anyone has experienced anything similar to this, and sorry if it has already been talked about in previous threads, I couldn't seem to find much! Thanks for the help!
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February 9th, 2017, 01:52 PM | #2 |
????????????????
Name: T
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A video with it running will go a long ways with helping determine the problem/noise.
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February 9th, 2017, 02:47 PM | #3 |
Daily Ninjette rider
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Welcome, James !!!
Cold noises like that mainly come from the cam/valves and and cam chain. Have you serviced those recently?
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February 9th, 2017, 03:24 PM | #4 |
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Does it change when pulling in the clutch lever?
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February 9th, 2017, 03:45 PM | #5 |
Rev Limiter
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What oil are you using?
How long does it take to go away? |
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February 9th, 2017, 07:01 PM | #6 |
ninjette.org newbie
Name: James
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I haven't recently serviced the cam/valves and cam chain. At what mileage marker do those typically need service? Like I mentioned earlier the bike only has just over 1600 miles on it.
The rattling doesn't change at all when pulling in the clutch, and it usually takes 3 or 4 minutes to completely go away. I am running Shell Rotella T6 5W-40. |
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February 9th, 2017, 07:10 PM | #7 | |
Daily Ninjette rider
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Quote:
For a bike that was manufactured 10 years ago, rolling only 160 miles per year, I would suggest a full service: http://faq.ninja250.org/wiki/Service_Schedule I would first remove, clean and lubricate the cam tensioner, caring of not rotating the engine.
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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February 9th, 2017, 07:33 PM | #8 |
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Name: James
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Okay good to know. When I bought the bike from my neighbor back in August of last year had 98 miles on it so it sat for a LONG time. I changed out the spark plugs coolant and have done oil changes at the intervals that were suggested, but no other service has been done. What else is usually involved in a full service, and how much would I usually expect to pay if I just take it to a mechanic somewhere?
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February 10th, 2017, 08:41 AM | #9 | |
Rev Limiter
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Quote:
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February 10th, 2017, 04:14 PM | #10 | |
Daily Ninjette rider
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Quote:
You must decide whether you have the money to use the expensive and rarely detailed services of a shop or if you have the time, tools and place to do the periodic works yourself.
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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February 12th, 2017, 03:30 PM | #11 | |
ninjette.org newbie
Name: James
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Quote:
https://youtu.be/1tBv2l9-BKg |
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February 12th, 2017, 03:47 PM | #12 |
Guy Who Enjoys Riding
Name: Jim
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"This video is unavailable"
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February 12th, 2017, 03:50 PM | #13 |
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Name: James
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February 12th, 2017, 04:06 PM | #14 |
Guy Who Enjoys Riding
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Yes, I can watch the video now, and I hear the noise. Huh. Mine doesn't do that.
Sorry, I don't have any good ideas, but I bet some of the guys with more years on a 250 do. My only wild guess would be a flapping cam chain, but I don't know why that would go away when the engine is warm. |
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February 12th, 2017, 04:25 PM | #15 | |
Rev Limiter
Name: Jay
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Quote:
I think you need to get it fully warm and set the idle mixture and idle speed to 1300. Once it starts, keep it about 2000 or 2500 until you can back the choke off and it will idle normally. If the carbs are adjusted (and synced) properly it won't need too much choke for too long when cold. I didn't hear the noise you were referring to. |
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February 12th, 2017, 04:41 PM | #16 |
Guy Who Enjoys Riding
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He had it idling normally for a short time, but apparently sped it back up to make the noise happen.
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February 12th, 2017, 04:47 PM | #17 |
ninjette.org newbie
Name: James
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This was a completely cold start and I had the choke on. The bike idles at about 1300 rpm when it is fully warmed up with the choke off.
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February 12th, 2017, 05:23 PM | #18 | |
Daily Ninjette rider
Name: Hernan
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Quote:
Please, read this: http://faq.ninja250.org/wiki/What_is..._at_startup%3F
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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February 12th, 2017, 05:50 PM | #19 |
ninjette.org newbie
Name: James
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I don't normally idle it that high when I start up the bike, I try to keep it under 3000, I was just trying to film the noise and adjust the choke a little with my left hand at the same time.
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February 13th, 2017, 07:05 AM | #20 |
????????????????
Name: T
Location: no where
Join Date: Feb 2016 Motorcycle(s): 2007 ninja 250, 14 ninja 300, 09 1125CR Posts: A lot.
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back to the noise subject it does sound like cam chain slap.
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February 16th, 2017, 01:09 PM | #21 |
ninjette.org newbie
Name: James
Location: Lehi
Join Date: Jul 2016 Motorcycle(s): 2007 Kawasaki ninja ex250 Posts: 9
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February 16th, 2017, 01:19 PM | #22 |
????????????????
Name: T
Location: no where
Join Date: Feb 2016 Motorcycle(s): 2007 ninja 250, 14 ninja 300, 09 1125CR Posts: A lot.
MOTM - May '17
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it could be ether, the chain could be bad or the tensioner could be worn or even a combo of both. start with the tensioner and checking that it moves freely and full movement.
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1 out of 1 members found this post helpful. |
February 16th, 2017, 01:21 PM | #23 |
ninjette.org newbie
Name: James
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February 19th, 2017, 05:53 PM | #24 |
ninjette.org guru
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try pulling the clutch and see if it goes away
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February 19th, 2017, 06:11 PM | #25 |
Guy Who Enjoys Riding
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February 19th, 2017, 07:09 PM | #26 |
ninjette.org guru
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Ooops . *hides in the corner*
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February 19th, 2017, 07:14 PM | #27 |
Guy Who Enjoys Riding
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No one is immune to speed reading.
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February 20th, 2017, 08:00 AM | #28 |
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An old standard "do-it-yourself" driveway mechanic diagnostic check:
If the noise you're hearing is matched perfectly to the RPM of the engine, then it's a problem in the crankshaft/connecting rods/pistons area of the engine. If the noise you're hearing is less than the RPM of the engine, then it's a top-end issue (because the valve train rotates at 1/2 crankshaft speed). Getting a "Mechanic's Stethoscope" from Harbor Freight (dirt cheap!) will make it much easier to locate the exact source of the noise. |
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March 18th, 2017, 02:19 PM | #29 |
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And if you step away from the bike and the noise doesn't get softer, it may not be the bike at all.
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