June 17th, 2013, 11:27 AM | #1 |
ninjette.org member
Name: Thomas
Location: Ontario
Join Date: Jun 2012 Motorcycle(s): 2008 Ninja 250R - Kawi Green Posts: 138
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spark plug replacement during other work?
Once my shipment comes in I'm going to be doing new EBC HH front brake pads, a galfer braided stainless steel brake line, possibly a JT 15T sprocket (different shipment time for that) and an oil change...
New spark plugs are $5 each... should I order those and replace them while I'm in there too.. I've got 13-14k miles, I haven't really noticed any performance issues or start up issues, in fact, it started practically instantly after the winter but will new spark plugs be worthwhile to do for only $10 and some time or should I just leave them? (I'm no expert) Also, a month or so ago I had a child sitting on the bike for a photo-op and she rev'd the engine right up to like 11k (near the redline) - not sustained at all, just rev'd and let go and since then, I might be just paranoid, but it seems to be making some kind of vibrating/buzzing sound when I'm riding over 6-7k, can't tell if it's plastics somewhere or coming from the engine? I'm about to take it all apart and looks for loose stuff, do you think that could have caused something in the engine? or probably just something loose somewhere? |
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June 17th, 2013, 11:42 AM | #2 | |
Fast-Guy wannabe
Name: Jason
Location: Brentwood, Ca
Join Date: Oct 2011 Motorcycle(s): 2009 Ninja250, 2011 RM-Z250, 2004 NSR50, Posts: A lot.
MOTM - Jan '13
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Quote:
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June 17th, 2013, 12:00 PM | #3 |
Long Time Rider
Name: Blue
Location: Charlotte, NC
Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.
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Changing spark plugs is not a bad idea especially if they have not been changed yet. Kawasaki recommends replacement @ 7500 miles, so if you have not replaced them on your 2008, there is no time like the present. While you're at it, throw in some Iridium Plugs (for a tiny performance bump) for a few dollars more, also replace the stock air filter if you haven't already done so.
A little high revving shouldn't hurt anything. As far as the vibration goes, just make sure everything is tightened correctly especially everything around the exhaust. Have you had the valves adjusted? |
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June 17th, 2013, 12:03 PM | #4 |
Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
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I agree with rojoracing53
The thread of the plugs is fragile; the less you mess with it, the best. I replace the plugs when adjusting valves after 6K miles and they look still new.
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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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June 17th, 2013, 12:08 PM | #5 |
ninjette.org member
Name: Thomas
Location: Ontario
Join Date: Jun 2012 Motorcycle(s): 2008 Ninja 250R - Kawi Green Posts: 138
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Thanks for the info..
I was thinking of doing the plugs because I'm taking off all the fairings to check for loose parts and also putting in iridium ones.. However it does seem like a fragile job that maybe I should leave to a pro? I dont have the experience/knowledge of hand but I am a technical person and can do most of mechanical/electrical work from tutorials without messing anything up. |
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June 17th, 2013, 12:13 PM | #6 | |
ninjette.org member
Name: Thomas
Location: Ontario
Join Date: Jun 2012 Motorcycle(s): 2008 Ninja 250R - Kawi Green Posts: 138
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Quote:
I haven't done the valves, last guy probably didn't either, not really sure. I bought it at 11200miles. How much would you say is reasonable at a shop for this ?j |
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June 17th, 2013, 12:14 PM | #7 | |
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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You only have to be careful about not crossing the threads and not over-torquing them. See how to: http://faq.ninja250.org/wiki/Changin...d#Installation
__________________________________________________
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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June 17th, 2013, 12:18 PM | #8 | |
ninjette.org member
Name: Thomas
Location: Ontario
Join Date: Jun 2012 Motorcycle(s): 2008 Ninja 250R - Kawi Green Posts: 138
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Quote:
Plz see my post above about valves |
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June 17th, 2013, 12:30 PM | #9 |
Long Time Rider
Name: Blue
Location: Charlotte, NC
Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.
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Depends on the shop and how much the labor rate is. I would say sub $200 is good for a valve job.
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June 17th, 2013, 02:03 PM | #10 |
ninjette.org member
Name: Thomas
Location: Ontario
Join Date: Jun 2012 Motorcycle(s): 2008 Ninja 250R - Kawi Green Posts: 138
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Ok thanks.
So about 2-3 hours? I believe my mechanic is $80/h |
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June 18th, 2013, 06:36 AM | #11 |
Long Time Rider
Name: Blue
Location: Charlotte, NC
Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.
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About that, provided you don't need parts.
Also, looking at the videos you posted in your other thread, you may want to measure the thickness of your brake rotors to make sure they are within spec. That front rotor did not look right. |
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June 18th, 2013, 10:30 AM | #12 |
ninjette.org member
Name: Thomas
Location: Ontario
Join Date: Jun 2012 Motorcycle(s): 2008 Ninja 250R - Kawi Green Posts: 138
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There's a good chance it's not...the pads are worn pretty much completely bare...
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June 18th, 2013, 12:19 PM | #13 | |
Long Time Rider
Name: Blue
Location: Charlotte, NC
Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.
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Quote:
Do you hear a scrubbing or grinding noise when you brake? |
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June 18th, 2013, 12:45 PM | #14 |
ninjette.org member
Name: Thomas
Location: Ontario
Join Date: Jun 2012 Motorcycle(s): 2008 Ninja 250R - Kawi Green Posts: 138
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I had heard it and haven't ridden since. Any brand recommendation on a rotor?
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June 18th, 2013, 12:52 PM | #15 | |
Long Time Rider
Name: Blue
Location: Charlotte, NC
Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.
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Quote:
Others have EBC, Stock and some other brand. |
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June 18th, 2013, 01:38 PM | #16 | |
ninjette.org member
Name: Thomas
Location: Ontario
Join Date: Jun 2012 Motorcycle(s): 2008 Ninja 250R - Kawi Green Posts: 138
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