June 15th, 2019, 05:52 PM | #1 |
ninjette.org newbie
Name: Levi
Location: Oklahoma City
Join Date: Jun 2019 Motorcycle(s): 2009 ninja 250r Posts: 7
|
2009 Ninja 250 has me stooped
This might be lengthy. I just bought the bike a few days ago knowing it doesn’t run. I have removed the carburetors and cleaned them and checked the integrity of all the parts I know to check. The gas tank was bone dry when purchased because ol’ boy drained it out so all fuel is fresh and new with 0 ethanol. The diaphragms are seated right with no tears, the large get in both carbs is open clear as day, the idle jets were clogged but I cleaned those out and they are good to go, the floats work in the carb bowl and I replaced the gasket for it because when filled there was a drip coming from one of them. I also replaced the spark plugs and did what I think in right concerning the idle screws on the bottom of the carbs. I tightened them down to flush them backed them out two complete screw turns. I don’t know what to do next but I attached a video that may help. Thank y’all in advance!
Last futzed with by frost; June 15th, 2019 at 06:53 PM. Reason: More work done |
|
June 15th, 2019, 07:44 PM | #2 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
|
Hi Levi and welcome to Ninjette!
Have you checked for spark? Do you smell unburned petrol coming out of exhaust? What you have is clogged carbs. Spray carb-cleaners no longer work to dissolve old dried gas varnish due to removal of chlorinated compounds. You'll have better luck using pee! 1. You need to completely disassemble carbs down to individual components for thorough cleaning back to factory-fresh condition. Down to every last component that cannot be disassembled any further. 2. Soak in ultrasonic cleaner using caustic radioactive solvents for days on end. 3. Use various types of wire to clean out every jet, orifice and fuel-circuit passage in carb-body 4. Clean out all these openings with soda-blasting @ 100000 psi 5. Re-assemble with new O-rings and seals Please see following links for more details and photos of what needs to be done. https://www.ninjette.org/forums/showthread.php?t=333573 https://www.ninjette.org/forums/showthread.php?t=333176 https://www.ninjette.org/forums/showthread.php?t=334365 https://www.ninjette.org/forums/showthread.php?t=330213 https://www.ninjette.org/forums/showthread.php?t=330960 https://www.ninjette.org/forums/showthread.php?t=323737 https://www.ninjette.org/forums/showthread.php?t=323452 https://www.ninjette.org/forums/showthread.php?t=322846 https://www.ninjette.org/forums/showthread.php?t=321223 https://www.ninjette.org/forums/showthread.php?t=317977 https://www.ninjette.org/forums/showthread.php?t=317810 https://www.ninjette.org/forums/showthread.php?t=316395 https://www.ninjette.org/forums/showthread.php?t=315193 https://www.ninjette.org/forums/showthread.php?t=299855 https://www.ninjette.org/forums/showthread.php?t=280658 Last futzed with by DannoXYZ; June 15th, 2019 at 10:04 PM. |
|
June 15th, 2019, 08:00 PM | #3 |
ninjette.org newbie
Name: Levi
Location: Oklahoma City
Join Date: Jun 2019 Motorcycle(s): 2009 ninja 250r Posts: 7
|
Hey Danno! Thank you!
I’ve checked the sparks and they’re running strong in both cylinders. I can’t smell I burned petrol but it won’t idle by itself. I have to spray carb fluid in it to have it idle and even then it stays around 4K RPMs before it dies on me. |
|
June 15th, 2019, 09:29 PM | #4 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
|
Having to spray fluid into the carbs to get it to run is a pretty good sign that the idle circuits are not supplying fuel.
|
|
June 15th, 2019, 10:18 PM | #5 |
ninjette.org newbie
Name: Levi
Location: Oklahoma City
Join Date: Jun 2019 Motorcycle(s): 2009 ninja 250r Posts: 7
|
Thank you guys for the insight!! I’ll be sure to read through the forums linked and take one last crack at it before sending the unit to Ducatiman. Carbs aren’t my strong-suite and I’m not too proud to say when I’m out of my own depth.
|
1 out of 1 members found this post helpful. |
June 16th, 2019, 07:35 AM | #6 |
ninjette.org certified postwhore
Name: Gordon
Location: new york
Join Date: Sep 2009 Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R Posts: A lot.
MOTM - Nov '18, Mar '17
|
10 years old already. Do you know if it sat most of its life? Mileage?
Beyond obvious carb service, the petcock may need "attention" as well. At your service, @frost
__________________________________________________
gordon@customcarbservices.com Custom Carb Service www.customcarbservices.com |
|
June 16th, 2019, 07:48 PM | #7 | |
ninjette.org newbie
Name: Levi
Location: Oklahoma City
Join Date: Jun 2019 Motorcycle(s): 2009 ninja 250r Posts: 7
|
Quote:
|
|
|
June 16th, 2019, 08:24 PM | #8 |
ninjette.org certified postwhore
Name: Gordon
Location: new york
Join Date: Sep 2009 Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R Posts: A lot.
MOTM - Nov '18, Mar '17
|
we'll communicate logistics and get 'er done without fanfare, quickly and efficiently....the main goal to get you riding ASAP.
__________________________________________________
gordon@customcarbservices.com Custom Carb Service www.customcarbservices.com |
|
June 17th, 2019, 05:00 AM | #9 | |
ninjette.org member
Name: Garry
Location: Bungendore Australia
Join Date: Jan 2019 Motorcycle(s): GPX250 1989 model and 1990 model Posts: 98
|
Quote:
__________________________________________________
Perpetua Culpa Alterna Vagus |
|
|
June 17th, 2019, 06:07 AM | #10 |
ninjette.org certified postwhore
Name: Gordon
Location: new york
Join Date: Sep 2009 Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R Posts: A lot.
MOTM - Nov '18, Mar '17
|
__________________________________________________
gordon@customcarbservices.com Custom Carb Service www.customcarbservices.com |
|
June 17th, 2019, 10:17 AM | #11 |
ninjette.org member
Name: Seamus
Location: Toronto area
Join Date: Jun 2019 Motorcycle(s): 09 ninja 250r, 97 royal enfield bullet 500 Posts: 10
|
I had a similar problem on an old royal enfield thumper. That ended up being a float height problem. Try setting that? Thankfully I’ve never had any carb problems with my ninjette, once you get her going right make sure you ride it as often as possible and you will likely never have to look at those damn things again. Unless of course you want more power
|
|
July 25th, 2019, 12:16 PM | #12 |
ninjette.org newbie
Name: Levi
Location: Oklahoma City
Join Date: Jun 2019 Motorcycle(s): 2009 ninja 250r Posts: 7
|
Progress and update
Alright so I’ll start by saying I still full well intend on sending my carbs in to Ducatiman to have them properly cleaned before my trip in September but I continued to fiddle with them because that’s the only way I’ll be able to learn and have a good understanding of how my bike works and be able to confidently self-diagnose problems/issues shall they arise. So, here’s where we are. I disassembled the carbs again and the only thing I left attached was the choke slide and put them in a chem dip to sit. The recommended time slotted was 24 hours but I’ll be honest, I forgot about them and they sat for 3 days. On day 3 I removed them from the chemdip and first thing I noticed is how much more free the choke slide worked along with all the old fuel tarnish being 90% gone. I blew out all orifices at 320 psi, replaced pilot jets, carb bowl gasket, both diaphragms on the needle jet, drilled out the cap for the idle jet mixture screws (I believe that’s what they’re called) and dialed them out 2 and 1/2 turns per factory recommendations, hooked it all back up and VWALA!! She lives!!
Here’s the kicker though. I think it’s getting too much fuel because the throttle response in neutral is fantastic, she idles strong, but when put into first gear more times than not it sounds like it’s really bogging down and won’t actually gain speed until the rpms hit 3.5k plus. While riding in that rpm range (3.5k+) all is well until I let off the throttle then it sounds like there’s some backfire going on (why I think there’s too much fuel being delivered). I just wanted to give you guys an update as to where I’m at and also put my current situation out there to make sure my thought process on this is sound. Thank y’all for the help and guidance provided already and I’ll post a video to this thread when I’m off work to show both the progress and current situation. |
|
July 25th, 2019, 01:06 PM | #13 | |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
|
Quote:
These bikes have lean mid-range and rich top-end. The popping and bogging you have in low-end are from insufficient fuel. DO NOT try to "force" past this by using higher throttle-openings and higher-RPMs. The lean mixtures will cause excessive heat, detonation/pinging and will blow headgasket, or melt holes in pistons! You need to take carbs back out for even more thorough and deeper cleaning. Chemicals do not work on dried petrol, it chemically oxidises and cross-links into poly-vinyl bonds (plastic). Only way to completely remove is with mechanical means. Scrubbing and flossing with wire. For example: You need to poke out all bleed holes in pilot jet and emulsion tube with guitar wire of matching size as holes. You'll find it pushes out little plastic plugs that looks like grains of sand. No amount of soaking can remove those plugs, they must be mechanically removed. You need to test before and after cleaning of these holes. I drip coloured dye through ends to verify that every single hole "bleeds" correctly. Same thing with fuel-circuits. These needs to be mechanically flossed to remove dried gas varnish. Then all passages need to be soda-blasted to remove the varnish crumbs that remains after flossing. Compressed air just packs these crumbs into tight wad at ends of passages and creates further clogs (unless you use +10000 psi). Soda-blastings breaks them down into smaller pieces to they can be moved out the tiny holes at end. |
|
|
July 25th, 2019, 04:46 PM | #14 | |
ninjette.org newbie
Name: Levi
Location: Oklahoma City
Join Date: Jun 2019 Motorcycle(s): 2009 ninja 250r Posts: 7
|
Quote:
Thank you for the insight and advice!! I haven’t driven it since because, as you said, running the bike at high RPMs can’t be good for it! Thank you for the diagram and I’ll be getting to work on that tonight!! |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
WTB: 2008-2012 Ninja 250 Gear Lever and 2009 Ninja 250 OEM Diablo Black Left Fairing | Bones85 | Items Wanted | 0 | April 26th, 2016 01:27 AM |
|
|