October 17th, 2015, 02:49 PM | #1 |
ninjette.org member
Name: Tang
Location: California
Join Date: Mar 2012 Motorcycle(s): 2006 Ninja 250 Posts: 44
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Rough idle and a couple of misfires
Hi,
I decided to do the spark plugs and oil/filter change by myself today. After everything's done, the bike becomes kind of rough at idle and I think I heard a couple of misfires at slow speed. It seems to run fine at higher RPM/speed. What could be the problem? By the way, I dropped one of the new spark plugs off the bike, I don't know if that was the main cause. Thanks, Tang |
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October 17th, 2015, 03:10 PM | #2 | |
ninjette.org member
Name: Ash
Location: Las Vegas
Join Date: Sep 2015 Motorcycle(s): Kawasaki ninja ex250 2007 Posts: 85
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Quote:
If you think there might be too much try dumping out the oil again and filling it with the same oil but use that little oil window on the side and make sure it doesn't exceed 3/4s full. Usually Immediate problems are directly related to the last thing that happened on the machine. I supposed you should make sure your spark boots are shoved onto the plugs really good too. Also, You had to take the tank off to get to the sparks. So make sure you're pipes are going the right way and non got disconnected accidentally. and that your valve is set to "on" I'll come on and give you some pictures in a sec. |
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October 17th, 2015, 03:19 PM | #3 | |
ninjette.org member
Name: Tang
Location: California
Join Date: Mar 2012 Motorcycle(s): 2006 Ninja 250 Posts: 44
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Quote:
I double checked everything to make sure they were connected/installed correctly, but I did have a little too much oil filled in (a little above the max level when I looked at the circular glass). I hope having too much oil is the cause. I'll run it for a week and see if it improved. |
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October 17th, 2015, 03:36 PM | #4 |
ninjette.org member
Name: Ash
Location: Las Vegas
Join Date: Sep 2015 Motorcycle(s): Kawasaki ninja ex250 2007 Posts: 85
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Hey, Here are those photos I promised. Double check to make sure you're all plugged in, A couple of these aren't cataloged I'm sorry I never followed them cause they didn't need to be removed, but the ones I did highlight are likely the ones you had to take off. I hope this helps The carb has a few puff and vacuum tubes too. Make sure none of those pulled out when you pulled on the fuel plumbing. those would be obvious cause they'll be twisted toward their port not not more than an inch or two away.
I only mention it cause That actually DID happen to me while relocating my radiator overflow tube. **B is a vent tube or something Don't connect it to anything.** Last futzed with by f0r54ken; October 17th, 2015 at 03:42 PM. Reason: A touch more intel. |
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October 17th, 2015, 03:44 PM | #5 | |
in your machine
Name: Scott
Location: Summer Shade, Ky.
Join Date: Oct 2014 Motorcycle(s): 98 Ninja 250/F12 aka ZX-2R "SERENITY", 91 Ninja 500/A5 aka ZX-5R "Phoenix", 84 Honda GL1200A "SIREN" Posts: A lot.
Blog Entries: 25
MOTM - Jun '17, May '16, Mar '15
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Did you renew the HT leads, and disassemble the caps?
Make sure you disassemble the caps, and clean them, and yes the caps get cruddy. Here my write-up, Quote:
Here's some pictures that might be helpful. I took these when I replaced the wires themselves, as it was a good time for a write-up, and the wires were OEM from 1998. Wires are just 7mm copper core, with clear silicone jacket
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violente et ignorantia ZX-2R BLOG Twitter and Instagram = Ghostt_Scott I'm not here to change your mind, just to inform. |
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October 17th, 2015, 03:53 PM | #6 | |
ninjette.org member
Name: Tang
Location: California
Join Date: Mar 2012 Motorcycle(s): 2006 Ninja 250 Posts: 44
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Quote:
I was able to remove the tank by removing the 3 tubes (A, B, C) in the third picture and D and E in the second picture. They're all connected and none of the came loose. |
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October 17th, 2015, 03:57 PM | #7 |
ninjette.org member
Name: Tang
Location: California
Join Date: Mar 2012 Motorcycle(s): 2006 Ninja 250 Posts: 44
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October 17th, 2015, 04:05 PM | #8 |
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Name: Gordon
Location: new york
Join Date: Sep 2009 Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R Posts: A lot.
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October 17th, 2015, 04:10 PM | #9 | |
ninjette.org member
Name: Tang
Location: California
Join Date: Mar 2012 Motorcycle(s): 2006 Ninja 250 Posts: 44
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Quote:
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October 17th, 2015, 04:12 PM | #10 | |
ninjette.org member
Name: Ash
Location: Las Vegas
Join Date: Sep 2015 Motorcycle(s): Kawasaki ninja ex250 2007 Posts: 85
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Quote:
Something else I did to check the Fuel flow was to take a glass bottle to D after disconnecting it and put that tube into the bottle. and crank the ingition. don't crank it for long your bike will still turn on. Make sure you're ready to hit your engine's killswitch. You can check the flowpoint to the carb from there. Mine came out at a decent rate. something equivalent to a low stream from a faucet. Also don't put that gas from the bottle back in Just get rid of it. |
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October 17th, 2015, 07:29 PM | #11 | |
in your machine
Name: Scott
Location: Summer Shade, Ky.
Join Date: Oct 2014 Motorcycle(s): 98 Ninja 250/F12 aka ZX-2R "SERENITY", 91 Ninja 500/A5 aka ZX-5R "Phoenix", 84 Honda GL1200A "SIREN" Posts: A lot.
Blog Entries: 25
MOTM - Jun '17, May '16, Mar '15
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Quote:
Worse case, go out and by some 7mm solid core HT leads, depending on the age of bike the old ones probably need to be replaced, and when installing the new ones, be sure to leave them long enough for future trimming and renewing the ends to the coils, and caps. Also a dab of dielectric grease in all areas. For the above reasons and others is why I converted to coil over plugs from a zx6. https://www.ninjette.org/forums/blog.php?b=8379
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violente et ignorantia ZX-2R BLOG Twitter and Instagram = Ghostt_Scott I'm not here to change your mind, just to inform. |
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October 21st, 2015, 12:42 PM | #12 |
ninjette.org member
Name: Tang
Location: California
Join Date: Mar 2012 Motorcycle(s): 2006 Ninja 250 Posts: 44
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So the gap of the spark plug that I dropped was too small. I am not sure if it was caused by the dropping because it took a little force to open up the gap again. The idle's good again after adjusting the gap.
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October 21st, 2015, 12:54 PM | #13 |
in your machine
Name: Scott
Location: Summer Shade, Ky.
Join Date: Oct 2014 Motorcycle(s): 98 Ninja 250/F12 aka ZX-2R "SERENITY", 91 Ninja 500/A5 aka ZX-5R "Phoenix", 84 Honda GL1200A "SIREN" Posts: A lot.
Blog Entries: 25
MOTM - Jun '17, May '16, Mar '15
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Good deal
__________________________________________________
violente et ignorantia ZX-2R BLOG Twitter and Instagram = Ghostt_Scott I'm not here to change your mind, just to inform. |
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