February 3rd, 2013, 03:28 PM | #1 |
Road Rash Master
Name: Mitch
Location: Oregon
Join Date: Jan 2013 Motorcycle(s): '09 SE Ninja 250r, '98 GSXR 750 Posts: 24
|
Still Having Issues!
As some of you know I was having issues with my bike: hard to turn on even with choke, idling all over the place, taking forever to warm up, slow idle response and dieing with throttle. I took the carb out, saw that one of the diaphragms was damaged and the little spring on the idle adjust was missing, so I ended up just buying a new to me carb off ebay.
The guy I bought the carb from assured me that the bike it came from ran great and they had just taken the bike apart a week prior. I decided not to clean the 'new' carb since I was repeatedly told that it worked great. I put the new carb in Friday night, turned the bike on and everything seemed pretty good. It idled a little bit low without choke and stalled with too much gas, but I assumed that was due to the low idle. Yesterday I thought it was time for a test drive before I put all the fairings back on. So I turned the bike on with choke and it started first try. I let it idle for a few minutes with choke and then took it off. Adjusted the idle speed a little. Put it into first and rolled down the hill, the minute I hit flat asphalt the bike stalled. Turned the bike back on, gave it some gas, slowly released clutch and instantly stalled again. Revved it up a little higher, released the clutch and moved about an inch and stalled yet again. I tried a few other times until I finally revved it up to 8000 rpms and released the clutch, It went flying forward about an inch and then stalled, causing me much pain in testicular area. At this point I was just trying to get the bike back into the garage without calling a tow truck, so I turned the choke on all the way and put it into first. Lo and behold the bike didn't stall and actually rode like a little Ninja is supposed to. I did a couple laps around the block with full choke on and then tried without the choke and it stalled again. So what the hell is wrong? Did the guy lie to me about the 'new' carb? Do I have too much seafoam in the gas tank? Is there something in my fuel that instantly clogs carb jets? Is there anything other than the carb that could cause these problems? With sore nuts in hand I come to you asking for help |
|
February 3rd, 2013, 04:23 PM | #2 |
ninjette.org guru
Name: Chris
Location: Chattanooga
Join Date: May 2012 Motorcycle(s): 09 ninja 15.256 Posts: 263
|
You need more practice. My clutch is a little grabby when it's cold, but if you are "flying forward", you need a slower release.
__________________________________________________
"We're not always doing business, but we're always open." "For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring." Carl Sagan |
|
February 3rd, 2013, 05:12 PM | #3 |
RIP Alex
Name: Cuong
Location: Houston, TX
Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot.
Blog Entries: 2
|
Sounds like dirty carbs. Mostly a fueling issue. To see if your idle adjustment screws haven't been tampered with. 2.5 turns out is a good starting point for reference. Looks like you are doing some carb cleaning. If not just switch the good diaphragm to your original carb.
__________________________________________________
HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days |
|
February 3rd, 2013, 06:02 PM | #4 |
Road Rash Master
Name: Mitch
Location: Oregon
Join Date: Jan 2013 Motorcycle(s): '09 SE Ninja 250r, '98 GSXR 750 Posts: 24
|
I can assure you it wasn't rider error.
Fueling issues would be clogged jets? Why would the bike run just fine with the choke and stall without? |
|
February 3rd, 2013, 07:46 PM | #5 | |
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
|
Quote:
That includes lack of ventilation of the gas tank, poor vacuum level reaching the petcock, clogged mesh filters of the petcock or in-line filter(s), sticky float valves, out of adjustment fuel level in the bowls, clogged internal passages of the carb (including jets). The choke allows some fuel to by-pass those passages and jets, making the fuel-air mix correct for combustion for cold start-ups and for lean conditions as in your case. The new carbs may be internally clean or not, or some other element of the fuel supply chain could be the bottle neck causing your problems.
__________________________________________________
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 |
|
|
February 4th, 2013, 05:00 AM | #6 |
ninjette.org sage
Name: bruce
Location: northern illinois
Join Date: Jan 2012 Motorcycle(s): Race bikes:08 Ninja 250,11 R6,16 ZX6,SV650.3 HD-1947,2-2003,2010. 1946 Indian and a lot of dirt bikes.2 Posts: 999
|
You say that you bought a carb .? Your bike has 2 as in carbs. Maybe the one you bought is fine, as the guy you got it from stated, and the other one has problems. The choke on your bike is actually not a choke, as in choking off air causing the engine to suck in more fuel from the float bowl. It's more of a second throttle bore in the carb drawing in it's own overly rich air fuel mixture for cold engine running. I think that you should look into why your primary air fuel mixture is off. Don't put Sea Foam in large quantities in you fuel thinking more is better, if anything it will thoroughly clean your gas tank and fuel lines and wash it down into your float goals. Not knowing the history of your bike or this problem, I think you need a good carb cleaning, at the same time, once you know the source of the failure, install a Dyno Jet kit it make them run so much better.
|
|
February 4th, 2013, 06:48 AM | #7 | |
Long Time Rider
Name: Blue
Location: Charlotte, NC
Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.
|
Quote:
You best bet is either manually clean the new carb or put your old one back in and just replace the damaged diaphragm and spring. |
|
|
February 4th, 2013, 07:06 AM | #8 |
ninjette.org sage
Name: bruce
Location: northern illinois
Join Date: Jan 2012 Motorcycle(s): Race bikes:08 Ninja 250,11 R6,16 ZX6,SV650.3 HD-1947,2-2003,2010. 1946 Indian and a lot of dirt bikes.2 Posts: 999
|
one other issue, replacing on carb is going to require re- synchronizing it to the other.
|
|
February 4th, 2013, 05:03 PM | #9 |
Road Rash Master
Name: Mitch
Location: Oregon
Join Date: Jan 2013 Motorcycle(s): '09 SE Ninja 250r, '98 GSXR 750 Posts: 24
|
Sorry, I was just calling it a carb since it is one piece. I replaced both carburetors.
He said the carburetors were out of the bike for a week. I put about 1/2 a can in half a tank. |
|
February 4th, 2013, 07:10 PM | #10 | |
Long Time Rider
Name: Blue
Location: Charlotte, NC
Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.
|
Quote:
You need to add some more gas. Have you physically looked at the carbs since putting in the Seafoam? Note: Sea Foam Motor Treatment is blended oil, and WILL NOT run a gasoline, gas/oil mix or ethanol engine without introducing HYDROCARBONS (gasoline / ethanol) to the mixture at a minimum 50%. On the other hand, a diesel engine WILL run for a short time on 100% Sea Foam Motor Treatment. |
|
|
February 5th, 2013, 12:06 AM | #11 |
ninjette.org guru
Name: Calvin
Location: Quesnel, B.C
Join Date: Aug 2009 Motorcycle(s): '08 250R (sold), 2013 300SE Posts: 276
|
sounds more like a vaccum leak. clean that your carbs are seated properly in the boots and you have all the hoses properly connected.
|
|
March 3rd, 2013, 10:26 AM | #12 |
Road Rash Master
Name: Mitch
Location: Oregon
Join Date: Jan 2013 Motorcycle(s): '09 SE Ninja 250r, '98 GSXR 750 Posts: 24
|
I thought I should update this. I shimmed the carb needles, sprayed carb cleaner in the jets, replaced the tiny fuel filter with an inline filter and changed the exhaust back to stock the bike is running fine now.
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Several issues | The_big_dill | 1986 - 2007 Ninja 250R Tech Talk | 21 | June 12th, 2013 10:16 AM |
Some issues | The_big_dill | 1986 - 2007 Ninja 250R Tech Talk | 12 | May 21st, 2013 04:59 AM |
2 issues I am having as a beginner... | Miraha | Riding Skills | 39 | April 30th, 2011 01:51 PM |
Having some troubleshooting issues... | Cloud Strife | 2008 - 2012 Ninja 250R Tech Talk | 70 | April 19th, 2011 02:58 PM |
I was having issues... | Apex | General Motorcycling Discussion | 24 | February 6th, 2010 05:21 PM |
|
|