September 4th, 2010, 12:58 PM | #1 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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my ninja doesnt want to take off in 1st(only transportation, i need help please)
just took the carbs off last night, and cleaned them as thorough as i ever have. nothing is clogged at all, and i adjusted the pilot/mixture screws to lightly seated and back out 2-1/2 turns.
when i crank her up it takes a second up to about five seconds to catch idle, but then when it does, she revs beautifully. i kick her down into first and and let off the clutch and she dies. if i rev it when in first and have it at about 5k or 6k rpms i can get it to take off and it does fine when i am accelerating, keeping it above about 5 or 6k rpms, but i come to a stop and have her in first she dies, havent tried stoping in other gears, it just seems to die when in gear with low rpms, i know the petcock leaks when in the "on" and "reserve" settings, could this have any adverse effects as too much gas for low rpms?might be a stupid question but thought id ask also someone from another forum said something about the chain, pretty unsure of if this has anything to do with it or not, but my chain does have i think a little too much slack. ive had this bike for about 4 months and have ridden for about 1-1/2 months and my situationn now leaves this bike as my only transportation. any advice is greatly appreciated |
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September 4th, 2010, 01:50 PM | #2 |
Join Date: Nov 2008 Posts: Too much.
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September 6th, 2010, 08:41 PM | #3 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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2001 not taking off in first gear
i have a 2001 ex250, 11,000 miles, owned for 4 months
my bike doesnt want to take off in first gear like it used to. i have to hold it at about 7k RPMs and it will take off, when crusing shifting and everything else seems normal, untill i try to come to a stop and it dies. seems like low rpms are messing me up. any advice? |
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September 6th, 2010, 09:21 PM | #4 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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also when i just ran up to the gas station it did the same thing, when i come to a stop it still dies, unless i keep the RPMs at about 7k then i can take right back off and everything else is fine
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September 6th, 2010, 09:22 PM | #5 |
Join Date: Nov 2008 Posts: Too much.
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has the bike been sitting unused for a long period of time in those 4 months?
does it idle fine w/o the choke when warmed up? how does it start using the choke when cold? |
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September 6th, 2010, 09:25 PM | #6 |
ninjette.org certified postwhore
Name: Sean
Location: Mary Esther, FL
Join Date: Jan 2009 Motorcycle(s): 2008 Ninja 250 1998 HD Road King Posts: A lot.
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Vance - The only thing I was able to find is the valves being too tight will cause the problem you are having.
http://faq.ninja250.org/wiki/My_engi...running_poorly |
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September 6th, 2010, 09:27 PM | #7 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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no the only time it has sat more than a day is when something has broken on it, the latest break was the clutch cable and it sat for maybe a week.
i have thouroughly cleaned the carbs if thats what your getting at |
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September 6th, 2010, 09:29 PM | #8 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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thanks sean, i dont suppose you have the gap feelers required to see if thats whats goin on?
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September 6th, 2010, 09:29 PM | #9 |
Join Date: Nov 2008 Posts: Too much.
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September 6th, 2010, 09:35 PM | #10 |
ninjette.org certified postwhore
Name: Sean
Location: Mary Esther, FL
Join Date: Jan 2009 Motorcycle(s): 2008 Ninja 250 1998 HD Road King Posts: A lot.
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September 6th, 2010, 09:37 PM | #11 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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September 6th, 2010, 09:40 PM | #12 |
Join Date: Nov 2008 Posts: Too much.
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okay. I think Sean's idea is next to check out.
when was the last time the valves were checked? |
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September 6th, 2010, 09:43 PM | #13 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
i have not checked that since i got it |
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September 6th, 2010, 09:45 PM | #14 |
ninjette.org certified postwhore
Name: Sean
Location: Mary Esther, FL
Join Date: Jan 2009 Motorcycle(s): 2008 Ninja 250 1998 HD Road King Posts: A lot.
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Kelly - I went over to his place to check out the bike and it idles alright. All the lines seemed fine but the petcock has a small leak. In nuetral it revs strong with no unusal noises. Put it in first and it bogs out pretty quickly.
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September 6th, 2010, 09:48 PM | #15 |
Join Date: Nov 2008 Posts: Too much.
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when I buy any used vehicle and I don't know it's maintenance history, I try to bring it completely up to date before I start riding it w/ any confidence. I suggest you do the same.
Guess that means it's time to check the valves. |
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September 6th, 2010, 09:52 PM | #16 | |
Join Date: Nov 2008 Posts: Too much.
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Quote:
btw, is it dripping gas? if so, that petcock needs to be replaced/repaired. |
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September 6th, 2010, 09:53 PM | #17 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
(bought the bike cause i thought my car was about to die. as soon as i got the bike running, my car died. so its been my only transportation and i guess i neverput much thought into that cause i was riding her everyday, and she was running strong. ive just been facing problems as they come my way) |
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September 6th, 2010, 09:56 PM | #18 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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i replaced the packing gasket and one other oring in the petcock, thinking that should fix it because my packing gasket was cracked and such, but it still leaks in on and res. i think its the diaphragm on the back side of the petcock, and i havent been able to find and exact match for that diaphragm.
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September 6th, 2010, 10:00 PM | #19 |
Join Date: Nov 2008 Posts: Too much.
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Vance... sorry, didn't mean to sound like I was lecturing... forgive me if it sounded that way, but my post was to help you see that buying used does have it's downsides and making a bike run at it's peak takes some work.
I hope you spend some time to check things over before you end up w/ 2 non running vehicles. if you don't yet have a service manual, now would be an excellent time to source one. |
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September 6th, 2010, 10:02 PM | #20 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
thanks for trying to help me out |
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September 7th, 2010, 02:03 PM | #21 |
ninjette.org certified postwhore
Name: Spooph
Location: Golden, CO
Join Date: Jul 2010 Motorcycle(s): '08 Ninja 250R Posts: A lot.
MOTM - Oct '15
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1.) Is your kick stand up
2.) Are all the vacuum hoses plugged in where they're supposed to be 3.) you might have a holed vacuum diaphragm on your slide....
__________________________________________________
My therapist has 2 wheels and a seat. If you are ever in doubt to my tone, please refer to my avatar. |
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September 7th, 2010, 02:09 PM | #22 |
Wartown, USA
Name: Bryan
Location: Warner Robins, GA
Join Date: Nov 2009 Motorcycle(s): 2009 Ninja 250R SE, 2007 Ninja 650R, and assorted other bikes Posts: A lot.
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Im wondering if you are dropping RPM's too low....
The ninja 250R is designed to run in the higher RPM ranges. If your trying to use the bike at RPM's under 4K...its not gonna like it. |
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September 7th, 2010, 02:27 PM | #23 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
2.)all hoses are in correct place 3.) are you talking about the diaphragm inside the carbs? when i took the top half of the carbs apart and checked the diaphragms for tears/holes, there were none. one was mis shapen slightly and didnt want to fit back in its track but after about 30min and some lube i got it to fit back in track and closed it back up without pinching anything.(i drove it for probly 2-1/2 weeks after that and all was fine. |
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September 7th, 2010, 02:29 PM | #24 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
i used to be able to let off the clutch and it would start to take off and then id give it gas to actually take off. now i have to have the rpms at about 7k to get it to take off at all. |
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September 7th, 2010, 02:35 PM | #25 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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i am attempting to check/adjust the valves today.
ill keep yall updated on my progress |
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September 7th, 2010, 02:42 PM | #26 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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is it completely necesary to remove sparkplugs for this, i just installed new ones 2 days ago and would rather not remove them(because ive heard you want to change spark plugs everytime you take them out,beacuse of the crush washer
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September 7th, 2010, 03:06 PM | #27 |
Join Date: Nov 2008 Posts: Too much.
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makes moving the valves into position a lot easier with them removed.
if you can move them into position w/o removing them, go right ahead. btw, I remove the plugs in my dirt bikes after almost every ride to read them and have used the same plugs over and over w/o any leak problems from the plugs. |
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September 7th, 2010, 03:14 PM | #28 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
im not. and im slightly confused about what is what inside there. this is my first time doing it. im not positive about which is the intake valve and which is the exhaust valve if i posted up pictures think yall could help me decifer what is what |
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September 7th, 2010, 03:16 PM | #29 |
Join Date: Nov 2008 Posts: Too much.
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September 7th, 2010, 03:41 PM | #30 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
when i have it set to " 1 T" like my manual says the lobes are facing each other not away from each other like other pictures show now im very confused |
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September 7th, 2010, 03:45 PM | #31 |
Join Date: Nov 2008 Posts: Too much.
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try rotating the crank one full turn (360*).
is it correct then? |
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September 7th, 2010, 03:46 PM | #32 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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September 7th, 2010, 03:49 PM | #33 |
Join Date: Nov 2008 Posts: Too much.
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sorry, at this point I'll leave the advice to someone with experience on the pregens. I've never actually done valves on them and wouldn't want to give you any bad advice. I do remember this issue surfacing before on the forums, but I can't remember what the outcome was.
Sean... you have any input? you could also try sending a PM to 2wheelguy. Craig is very well versed on the pregens. |
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September 7th, 2010, 05:11 PM | #34 |
ninjette.org dude
Name: 1 guess :-)
Location: SF Bay Area
Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much.
Blog Entries: 7
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How is the choke function? Can you confirm that the choke lever is appropriately moving the the choke on the other end?
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Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered) |
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September 8th, 2010, 10:06 PM | #35 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
any ideas of where to go from here? |
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September 8th, 2010, 10:16 PM | #36 |
Join Date: Nov 2008 Posts: Too much.
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sounds to me like the pilot circuit is still clogged up. how does it run w/ the choke fully on?
how does it start from a cold start? |
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September 8th, 2010, 10:21 PM | #37 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
i just adjusted the valves and synced the carbs today and tried to take her for a ride and i still have to have the rpms at about 5k to take off, my idle is set at 2k rpms. once i take off everything seems to be normal until the rpms get below about 5k then it starts to bog and has some trouble getting the rpms back up. keep in mind i pretty much overhauled my carbs last week and replaced the floats, the float needles, bowl gaskets and pilot screws(lightly seated and back 2-1/2 turns-like specified) do you think it could be a problem with the pilot screws needing to be better tuned? i put in new spark plugs a few days ago and when i adjusted the valves today i took them out and they are slightly black( does that signify its running too rich?) |
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September 8th, 2010, 10:25 PM | #38 | |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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Quote:
my batteries charging right now ill get back to ya tomorrow on how it runs with the choke fully on. |
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September 8th, 2010, 10:28 PM | #39 |
slightly mechanical
Name: vance
Location: gulf breeze, Fl
Join Date: Sep 2010 Motorcycle(s): 2001 ninja 250; 1981 yamaha maxim 650(have not started working on her yet) Posts: 79
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with a full battery charge if things dont change im gonna take the carbs apart again and see whats goin on inside there
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September 9th, 2010, 12:19 AM | #40 |
Join Date: Nov 2008 Posts: Too much.
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