November 28th, 2013, 06:03 PM | #1 |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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Back to fixing the broken beast.
I bought a ninja 250 on craiglist in october. I took a break from fixing it because of midterms and test from school. The issue my ninja have is idling. I could not make it idle anymore, I mean sometimes it could idle at 3k but it will eventually die off. The bike idle goes up or down when i turn the handlebar. I often take it out for a ride but after high rev to down shift at a stop light it would turn off or stall. The bike doesnt idle at all i do not know why. When i first bought it i notice it doesnt idle but i didnt know anything about bikes and what is idling. However, 2 weeks ago i cleaned out carbs (it was already cleaned when i opened it). I do not know what to do next. I plan to drill out the plugs for the idle mixture screw i think that's the issue. I plan to actually do everything by myself (DIY) because I am running out of money.
If you guys are near I live in Irvine California come take a look and give me some tips. If you guys could comment and ask more questions and help me find the issue it would be much appreciated. I know it's thanksgiving so HAPPY THANKSGIVING. Unfortunately, my family does not celebrate this awesome eating holiday. |
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November 28th, 2013, 06:33 PM | #2 |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
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Basics brah!
Gas + air + spark Easy checks first: Carbs cleaned - done Functional Petcock - check Fuel filter - check Strong charge on battery - check Airbox clean - check Air filter clean - check Mist carb cleaner around carbs/intake boots/vac lines (vac leak check) - check Harder: Check spark - pull spark plug and leave connected inside boot, ground against engine case and turn it over to visually check spark (the bluer the better) Drill plugs and turn mix screws all the way and then 2.5 turns out Stock exhaust and jetting?
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November 29th, 2013, 01:33 AM | #3 | |
ninjette.org member
Name: Loc
Location: Irvine
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Quote:
and is there video on using mist carb cleaner around boots and vac lines? For the spark plugs what do you mean leave connected inside boot? what boot? what do you mean ground against the engine case? THANKS BRO! I plan on selling this and getting a newer generation! I want to fix it so the buyer of the bike doesnt have to do it. |
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November 29th, 2013, 07:11 AM | #4 |
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.
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No problem, always glad to help.
Give a man a fish and he eats for a day. Teach him to fish, he eats forever. Here are some videos and comments that will help. Vacuum leak check
Link to original page on YouTube.
Link to original page on YouTube.
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November 29th, 2013, 07:33 AM | #5 | |
ninjette.org member
Name: George
Location: Ottawa, Canada
Join Date: Jun 2011 Motorcycle(s): EX250, C10 Concours Posts: 109
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Quote:
More generally, idle issues are governed by mung in the pilot jets, mixture screws, or the little transition ports near the bottom of the butterfly. Cleaning procedure: http://faq.ninja250.org/wiki/Cleaning_the_carbs_2 |
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November 29th, 2013, 08:16 AM | #6 |
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.
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How the h did I miss that easy one. /sigh..... Good catch George.
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Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
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December 2nd, 2013, 06:04 PM | #7 |
sail away
Name: Jon
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A valve adjustment could also cause an odd idle. The pregen is scheduled to have valve adjustments at 600 and then at every 6k miles.
On the pregen petcock there is no "prime" setting so you will need to apply a vacuum to the second hose in order to simulate the engine vacuum. Suck on the hose or use a mittyvac. Also check the tension on the choke cable. If it is too tight, turning the bars would cause the cable to tighten, thereby richening the mixture. That would also cause the rpms to rise during idle in most situations.
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December 3rd, 2013, 08:08 PM | #8 |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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December 3rd, 2013, 08:11 PM | #9 | |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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Quote:
I will probably do the valve adjust then. adjust all to 6 is a good idea or no? which hose are you talking about for petcock? how do i loosen the choke cable? if it is too tight?? |
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December 3rd, 2013, 08:14 PM | #10 | |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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Quote:
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December 4th, 2013, 11:09 AM | #11 |
ninjette.org member
Name: Tony
Location: FL
Join Date: Sep 2013 Motorcycle(s): 05 Ninja 250 Posts: 23
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+ 1 on being a throttle cable issue since the bike changes idle when you are steering. Lube the throttle cables and check the freeplay.
A valve adjustment, idle mixture adjustment, and even shimming the needles are all things that can effect the idle and get it working properly again. Just look around this site for how to do these things yourself. All are easy aside from the valve adjustment which is just time consuming. |
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December 5th, 2013, 10:31 PM | #12 |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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December 6th, 2013, 05:38 AM | #13 |
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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I reuse it if it looks to still be in good condition. I am sure many others do as well but you just don't know for sure until you take off the valve cover or it leaks after everything is put back together.
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Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
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December 7th, 2013, 11:55 AM | #14 |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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Great news after the valve adjustment the bike idles at 1k! Thanks so much i hope it stays that way
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December 10th, 2013, 05:40 PM | #15 |
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That's great man! But don't count on it staying that way past 6000 miles... That is the recommended service interval.
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December 10th, 2013, 06:17 PM | #16 |
ninjette.org member
Name: Loc
Location: Irvine
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December 10th, 2013, 06:22 PM | #17 |
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http://www.ninjette.org/forums/showthread.php?t=161636
You've been riding a month, are scared of crosswinds, and don't yet understand the concept of staying light on the bars and supporting weight without your hands. Is more power really the best idea? Keep the junker pregen until you're more comfortable that you're not going to bin it. Think about it. |
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December 10th, 2013, 06:49 PM | #18 | ||
Rev Limiter
Name: Jay
Location: WI
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Quote:
Quote:
A SV650 isn't small, light, or easy to learn on. I've had one since 2006, and don't recommend them unless you have at least a couple successful seasons under your belt. |
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December 10th, 2013, 08:08 PM | #19 | ||
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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Quote:
Quote:
thanks so much guys for the advice! also! when i lean during a corner, i have wrist pain :/ |
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December 10th, 2013, 10:19 PM | #20 |
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You can get rid of all that jumpiness and long warm up period by adjusting the jetting a little bit.
The wrist pain means you're putting too much weight on your hands instead of carrying it with your knees/back/abs/legs/butt. Best part about riding a beater as a learner is that you don't have to give 2 sh*ts about it when you drop it. |
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December 10th, 2013, 10:31 PM | #21 | |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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Quote:
i have wrist pain when i use the throttle maybe its how i am holding the handlebar. Any tips? its not really beaten hahah cosmetically its 10/10 but mechanically its 7/10. I wouldnt mind getting a ninja 250 4th gen with frame sliders. I am so glad you told me not to get an SV650 hahaha |
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December 10th, 2013, 10:38 PM | #22 |
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Maybe drill, maybe not. Go out and get it fully up to operating temp. While still hot, adjust the idle speed knob to proper idle (around 1300). That should cure some of the jumpiness. Later on, drilling the plugs might be a good idea so you can access your mix screws. Shimming needles out is another option to help it warm up faster and smoother while under load.
Question: this jumpiness. Do you ride off without choke after a cold start? Using choke and keeping the idle at ~2500 rpm keeps the bike nice and smooth. After a mile or two, the bike should respond properly to throttle and idle nicely. At that point, turn the choke off. Humor me and try this method of choke usage. $10 says your wrist pain is from putting weight on your hands instead of supporting yourself with legs and abs and back. Funny grip can cause discomfort, but that's usually tingly fingers or whatever. Sore wrists is usually from too much weight on your hands. |
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December 10th, 2013, 10:49 PM | #23 | |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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Quote:
no i dont ride using choke because i am a big p***y. Why humor you? hahaha what do you mean? it could be my grips :[ the previous owner went pure ghetto with this bike. ugh i was so dumb. |
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December 10th, 2013, 10:54 PM | #24 | |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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Quote:
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December 10th, 2013, 10:56 PM | #25 |
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Humor me means I'm right, but I want you to learn for yourself through experience rather than just doing it because someone on the internet tells you to.
No, grips don't cause wrist pain. I've mentioned this before, but most issues with motorcycles are 99% operator error, 1% equipment error. Riders are so quick to blame the equipment before changing their riding style. Pretend that your handlebars are tubes of toothpaste without any caps. Your goal is to not squeeze the tube so tightly or put so much weight on them that they spew toothpaste all over the place. The only tired part of your body after a long ride should be your head from thinking about traffic and your legs from supporting yourself; not your wrists. Never your wrists. Sore wrists = too much weight on your hands, aka you need to work on your riding posture. |
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December 10th, 2013, 10:58 PM | #26 | |
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I still think your idle is set too low as well. That's not helping your stalling issue. |
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December 10th, 2013, 11:07 PM | #27 | |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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Quote:
i dont even know like i set it at 1.2k but sometimes when its warmed up it stays at 2k. i dont even know what to do hahah |
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December 10th, 2013, 11:10 PM | #28 | |
ninjette.org member
Name: Loc
Location: Irvine
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Quote:
I am excited to try that tomorrow morning hahaha. thanks soo much! |
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December 10th, 2013, 11:13 PM | #29 |
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But I may be wrong also, so it could be a total shot in the dark.
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December 10th, 2013, 11:17 PM | #30 |
ninjette.org member
Name: Loc
Location: Irvine
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December 10th, 2013, 11:31 PM | #31 |
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Look down the length of the cable. There should be an adjuster on there. It looks like a barrel with a small nut at each end to change length and take up slack in the cable. Play with that a bit and see if it helps.
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December 11th, 2013, 07:10 AM | #32 | |
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I know you'll be much more careful buying next time around. Think how much you've learned! |
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December 11th, 2013, 07:54 AM | #33 | |
ninjette.org member
Name: Loc
Location: Irvine
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Quote:
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December 11th, 2013, 08:38 AM | #34 | |
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December 11th, 2013, 08:41 AM | #35 | |
sail away
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December 11th, 2013, 06:22 PM | #36 | |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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Quote:
yeah i learned how to ride it smoother i didnt know you're suppose to use clutch to make the ride smoother. I didnt know because people said not to ride the clutch. no idea what does that even mean. yeah it does i dont know how to fix it. I took my bike to the gas station where they had free air for tires i didnt know how to make it work hahahah soo embarrassing. hey do you know if its okay to use snowboarding gloves for motorcycle riding? http://www.dakine.com/p/snowboard/gl...-glove?clr=003 it seems like i get less pain on my wrist and keeps my hand warmer. |
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December 11th, 2013, 06:56 PM | #37 |
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Dude. Winter gloves... in Irvine California? Are you kidding me? Weather.com is predicting 60's and 70's... It hasn't broken 30 here in a week.
No, that's not the point of moto gloves. Think about if you fall. What do you catch yourself with? Your hands. Now if you fall at 40 mph, how good are your hands going to feel? About as good as cheese that just went through a cheese grater. Have you tried not putting weight on your hands? Is this your first vehicle with a manual transmission? |
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December 11th, 2013, 07:02 PM | #38 |
ninjette.org member
Name: Jon
Location: California
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December 11th, 2013, 07:03 PM | #39 | |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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Quote:
i have a pair of gloves but its like summer gloves my hands and freeze to death. I tried but when i hold it lightly but i still have a little bit of pain. maybe it was from previous tries of riding motorcycle. well i drove my dad's toyota corolla sometimes when i wanted to learn probably only a few months ago. no one taught me how to drove so i just looked it up on youtube. |
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December 11th, 2013, 07:05 PM | #40 |
ninjette.org member
Name: Loc
Location: Irvine
Join Date: Oct 2013 Motorcycle(s): 2007 Ninja 250 Posts: 86
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um not up in riverside i bought this near dana point. from some guy that works in a restaurant. I onced asked him about his battery warranty because before i bought it he said its a brand new battery. 2 weeks after i bought the bike i noticed the battery is kind of defect or dead. i texted him and asked if he still has the warranty, he texted me back saying "All sales on are final"... i didn't know what to say.
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