November 6th, 2014, 07:15 PM | #1 |
DaNinjaDragon
Name: Kaci
Location: Phoenix
Join Date: Nov 2014 Motorcycle(s): Ninja 250 Posts: 7
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Carb Issues...? HELP
I'm having a little trouble with my bike. I put it away one day and the next day it wouldn't idle and eventually wouldn't accelerate. So i cleaned out the carbs, thinking it could be some dirt and replaced all the parts, put it back together and it would accelerate, but it still won't idle. Thought it could be a vacuum leak, but I replaced all the hoses, but still no luck with the idle. The air filter is brand new, changed the spark plugs, and adjusted the valves prior to these issues. Carbs are also synched. Not really sure what is left to do. Clean them out again?
Any help is appreciated! |
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November 6th, 2014, 07:19 PM | #2 |
Participant
Name: Dave
Location: South of Seattle
Join Date: Oct 2012 Motorcycle(s): '94 K75 std Posts: Too much.
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Perhaps a tear in one of the rubber adapter tubes between the carbs and the head?
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November 6th, 2014, 07:32 PM | #3 |
DaNinjaDragon
Name: Kaci
Location: Phoenix
Join Date: Nov 2014 Motorcycle(s): Ninja 250 Posts: 7
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When I took it all apart it didn't seem to have any tears, but I'll have to check it out again
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November 6th, 2014, 08:09 PM | #4 |
ninjette.org certified postwhore
Name: Roger
Location: Mitchell, South Dakota
Join Date: Apr 2014 Motorcycle(s): 1978 Z1R, 1999 EX250 Posts: A lot.
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Sounds like the idle jet is still dirty, I thought I had mine clean a couple of times before it dawned on me that they can be unscrewed and given a real cleaning. Mine were so dirty you couldn't see that there was a screwdriver slot in it. Takes a fairly small screwdriver to fit into the hole.
http://n4mwd.blogspot.com/ scroll down the page to see pics of carbs Last futzed with by Z1R rider; November 6th, 2014 at 08:11 PM. Reason: forgot some info |
1 out of 1 members found this post helpful. |
November 6th, 2014, 08:18 PM | #5 |
DaNinjaDragon
Name: Kaci
Location: Phoenix
Join Date: Nov 2014 Motorcycle(s): Ninja 250 Posts: 7
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I didn't even think about that the first time, but I'll try that next. After doing that were your idle issues resolved? I think that's the only thing I haven't tried yet so I'm hoping that will be a success and I can get back to riding!
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November 6th, 2014, 09:00 PM | #6 |
Rev Limiter
Name: Jay
Location: WI
Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot.
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Have you adjusted the idle mixture screws (generally 2 1/2 turns out is close) and then set the hot idle to 1300? Is the fuel fresh?
There's a fair amount of work needed to really get the carbs clean. Look over this section and see if you did everything that needs to be done - http://faq.ninja250.org/wiki/How_do_...n_the_carbs%3F |
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November 6th, 2014, 09:07 PM | #7 |
DaNinjaDragon
Name: Kaci
Location: Phoenix
Join Date: Nov 2014 Motorcycle(s): Ninja 250 Posts: 7
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Yep I did all that when I put the carbs back together. I cleaned them in an ultrasonic cleaner, sprayed carb cleaner in all ports & blew all the jets out with air. Fuel is fresh. Been running seafoam in the tank since I got it also
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November 6th, 2014, 09:22 PM | #8 |
Rev Limiter
Name: Jay
Location: WI
Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot.
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What about the idle mixture screws and the hot idle speed?
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November 6th, 2014, 09:26 PM | #9 |
DaNinjaDragon
Name: Kaci
Location: Phoenix
Join Date: Nov 2014 Motorcycle(s): Ninja 250 Posts: 7
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Yes I adjusted both of those
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November 7th, 2014, 05:29 AM | #10 | |
ninjette.org certified postwhore
Name: Roger
Location: Mitchell, South Dakota
Join Date: Apr 2014 Motorcycle(s): 1978 Z1R, 1999 EX250 Posts: A lot.
MOTY - 2018, MOTM - Oct '16
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Quote:
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November 7th, 2014, 08:17 AM | #11 |
Rev Limiter
Name: Jay
Location: WI
Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot.
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Spray some carb cleaner around the intake boots to confirm you don't have a vacuum leak.
You said you adjusted the idle mixture screws (2 1/2 out?) and set the hot idle to 1300. So when won't it idle? Can you post a video of it? |
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November 8th, 2014, 06:54 PM | #12 |
ninjette.org member
Name: Glenn
Location: Australia
Join Date: Jan 2014 Motorcycle(s): GPX250, ZZR250, CT90 Posts: 57
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Perhaps do a compression check?
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November 10th, 2014, 09:14 AM | #13 |
Inline 4!!!
Name: Danny
Location: MA
Join Date: May 2014 Motorcycle(s): 2008 CBR600rr, 1987 KLR 250 Posts: A lot.
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My pregen was doing the same thing...
Bike had a sputtering/hesitation issue when you twisted the throttle, cleaned carbs, still there, cleaned again, now bike wouldn't idle, cleaned again, sputtering returned, cleaned once more following a detailed video on youtube and everything ran great and I sold her before she had a chance to mess up on me again hahaha
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November 10th, 2014, 11:33 AM | #14 |
ninjette.org guru
Name: Lee
Location: Monroe, LA
Join Date: Feb 2014 Motorcycle(s): Rebel 250s, Ninja 250s VN750s (currently nine total) Posts: 465
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What solvent did you use in the sonic cleaner? Was the cleaner large enough to submerge the entire carb? The sonic cleaner alone should have cleaned the carbs completely. IMO, spray carb cleaner ranks a little better than urinating on the carbs in cleaning effectiveness.
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November 10th, 2014, 11:57 AM | #15 |
DaNinjaDragon
Name: Kaci
Location: Phoenix
Join Date: Nov 2014 Motorcycle(s): Ninja 250 Posts: 7
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I haven't had a chance to take the carbs apart yet, I got my wisdom teeth out a couple days ago haha. But when I cleaned them out the first time they were fully submerged in simple green and a little distilled water.
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November 10th, 2014, 01:48 PM | #16 |
ninjette.org sage
Name: bob
Location: Earf
Join Date: Apr 2013 Motorcycle(s): 2005 Ninja 250, 2006 SV650N Posts: 642
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When this happens to me it usually the pilot jet. You have to unscrew it and check those tiny holes are all clear. It generally only happens when I run the tank low and some crud from the bottom gets in the carbs.
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November 10th, 2014, 07:29 PM | #17 |
ninjette.org guru
Name: Lee
Location: Monroe, LA
Join Date: Feb 2014 Motorcycle(s): Rebel 250s, Ninja 250s VN750s (currently nine total) Posts: 465
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Not sure how aggressive Simple Green is in removing varnish and other deposits. I use Berryman's Chem Dip, which is designed to clean carbs and have had very good results. After about 45 minutes to an hour or so, vapors begin to come off the Chem Dip and I shut it off. If you go this route, be aware that Chem Dip is flammable and monitor the process closely. You don't want to burn anything up! The Chem Dip can be used multiple times until it becomes too contaminated with crud from dirty carbs.
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November 11th, 2014, 05:13 AM | #18 |
ninjette.org guru
Name: harry
Location: Central Florida
Join Date: Sep 2013 Motorcycle(s): 2006 Ninja 250, 2004 Buell XB12s, Honda 110 Elite Posts: 332
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PINESOL!!!!
PINESOL! Use Pinesol! Chemdip, and any other dedicated carb dip will kill any rubber or plastic parts it comes in contact with.
Please Mods, make a carb cleaning sticky!
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November 11th, 2014, 08:45 AM | #19 |
Rev Limiter
Name: Jay
Location: WI
Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot.
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I've had good luck with using old school Carb Dip for about an hour, then rinse, then into the ultrasonic cleaning solution for about 20 minutes in a few different positions. Then I rinse with D.I. water and coat with a Zirconium-based "Nano Coating" inside and out to prevent corrosion.
You can't use Carb Dip unless all gaskets, seals, and o-rings are removed, but you aren't going to get a good job unless you have it completely disassembled anyway. http://www.apexcustomcoating.com/ultrasonic-cleaning/ |
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November 13th, 2014, 05:31 PM | #20 |
DaNinjaDragon
Name: Kaci
Location: Phoenix
Join Date: Nov 2014 Motorcycle(s): Ninja 250 Posts: 7
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Well I finally got a chance to take them apart again. Used some chem dip this time and took apart the choke mechanism inside the carbs. Put it together and it seems to run great. Started ride up and it idles normal It's a little touchy but it was before I had issues.
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