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August 26th, 2014, 10:18 PM
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#1 |
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ninjette.org newbie
Name: Tyler
Location: Carlisle
Join Date: Jul 2014 Motorcycle(s): 07 Ninja 250R Posts: 4
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Need some help!!
Okay let me give you all the rundown. When the choke is on at idle my exhaust pops alittle and when im taking off or cruising I can feel and hear something popping from underneath. My friends dad thinks that it might need a new spark plug and ignition coil. Any thoughts?
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August 26th, 2014, 10:46 PM
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#2 | |
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Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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Quote:
We will need more info: How long have you had the bike? Any recent modifications or service work? How continuous is that sound when at speed?
__________________________________________________
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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August 26th, 2014, 10:57 PM
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#3 |
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ninjette.org newbie
Name: Tyler
Location: Carlisle
Join Date: Jul 2014 Motorcycle(s): 07 Ninja 250R Posts: 4
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The bike itself is a 2007 and Ive owned it since early 2013. Other than an oil change nothing, the only mods ive done to the bike are turn signals. And the sound is only under acceleration.
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August 27th, 2014, 12:52 AM
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#4 | |
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Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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Quote:
It could be electrical or fuel related or valve timing. The easiest thing is to check for any loose wire or connector in the ignition circuit (check all plugs of each coil) and then disconnecting one spark plug cable at a time (leaving plugs in place) to identify the side. If electrons are not to be blamed, jump on the fuel supply system, because that is the sound of fuel starvation. If no luck, then check the valve's gaps or clearances and adjust accordingly. This guide may help you: http://faq.ninja250.org/wiki/Troubleshooting
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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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August 27th, 2014, 02:17 AM
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#5 |
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sammich maker
Name: snot
Location: West Ohio - in the kitchen
Join Date: Feb 2012 Motorcycle(s): 2013 white 300, 09 KLX 250 SF, 09 thunder blue 250(traded) Posts: A lot.
MOTM - Apr '15
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Welcome Tyler, keep us posted on your progress.
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August 27th, 2014, 07:27 AM
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#6 |
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Rev Limiter
Name: Jay
Location: WI
Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot.
MOTM - Jun '18, Oct '16
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A couple different things come to mind -
Air filter or intake partially plugged. Chain and sprockets are out of adjustment or very worn. You need to try to isolate where the sound is coming from. Is it definitely a popping from the exhaust? When you said the sound comes from "underneath", only during acceleration, I wasn't sure. |
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August 27th, 2014, 07:49 AM
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#7 | |
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The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
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Check that airbox Check that chain and slack Lube chain Test ride and let us know. 
__________________________________________________
Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
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August 27th, 2014, 07:55 AM
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#8 |
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Wrench wench
Name: The Stigette
Location: DC/MD/VA
Join Date: Jun 2014 Motorcycle(s): TWO HUNDRED FORTY EIGHT CUBIC CENTIMETERS (R.I.P.), SIX HUNDRED FORTY FIVE CUBIC CENTIMETERS Posts: 415
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My bike does this when my carbs haven't been cleaned in forever and the pilot jets are a little clogged. Does it happen only at low speed/idle?
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August 27th, 2014, 08:40 AM
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#9 | |
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Rev Limiter
Name: Jay
Location: WI
Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot.
MOTM - Jun '18, Oct '16
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Quote:
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August 27th, 2014, 10:26 AM
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#10 |
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Wrench wench
Name: The Stigette
Location: DC/MD/VA
Join Date: Jun 2014 Motorcycle(s): TWO HUNDRED FORTY EIGHT CUBIC CENTIMETERS (R.I.P.), SIX HUNDRED FORTY FIVE CUBIC CENTIMETERS Posts: 415
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Oh yeah, that and seafoam is something I shove in there regularly. Carbs haven't been cleaned in like 4k miles, I'm terminally lazy
 No additive is a substitute for a good teardown and cleaning...
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August 28th, 2014, 10:53 PM
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#11 |
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ninjette.org newbie
Name: Tyler
Location: Carlisle
Join Date: Jul 2014 Motorcycle(s): 07 Ninja 250R Posts: 4
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Thanks everyone for the suggestions!! I'll look her over this morning and see if I can find something. Hopefully its nothing major, I really dont want to take it to a motorcycle shop. < broke college student problems :P
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August 29th, 2014, 04:53 AM
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#12 | |
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Rev Limiter
Name: Jay
Location: WI
Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot.
MOTM - Jun '18, Oct '16
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One treatment of Techron per season should do all the cleaning you need. Techron is a superior cleaner to Seafoam IMO. |
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August 29th, 2014, 08:51 PM
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#13 |
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ninjette.org newbie
Name: Tyler
Location: Carlisle
Join Date: Jul 2014 Motorcycle(s): 07 Ninja 250R Posts: 4
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Well, I just ordered 110.00 worth of parts for my bike. These are for the other things that need fixed lol.
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