Can't get my ninja to start after carb clean

Austin0707 · August 24th, 2021, 11:05 PM

Hello, I am having some trouble getting my ninja 250 to start after fully cleaning the carbs and was wondering if someone can guide me thru troubleshoot steps? I'm not even sure if I have the hoses on right for start. I have the breather from tank haning out not sure if it connects to anything, I have no hose connected to under the handlebars that goes to the airbox

Bob KellyIII · August 24th, 2021, 11:50 PM

I got the manual for the 2012 kawasaki Ninja 250R on line and down loaded it
and it has hose connection details in it....
if you have just one hose wrong that could be causing the bike not to start.
the vacuum lines from the carb are the ones I would suspect first... those are the ones that go directly into the intake manifold , where you check for carburetor synchronization at... if their unplugged, the bike won't run.
or of their plugged into the wrong place....
the hoses have to be right.... you can't fake it and luck out !
get a manual and double check every line on that thing....
once your satisfied all is correct then you can start trouble shooting as to why it won't start.
Sorry I can't be more helpful than that but certain things MUST be right on these things, and the hoses that go everywhere are one of them.
.....
Bob......

ducatiman · August 25th, 2021, 05:05 AM

1st......Ca or 49 state model?

jkv45 · August 25th, 2021, 06:03 AM

Look over this section for carb info, photos, and troubleshooting tips -

https://faq.ninja250.org/wiki/Intake

DannoXYZ · August 25th, 2021, 08:32 AM

What procedure did you use to clean carbs?
Did you turn petcock on?
Did you hook up vacuum hose to petcock?
Choke cable connected and adjusted?

Use small squirt-bottle to spray 1cc petrol down carb-throats (or into airbox snorkel). If engine starts, you know it's fuel-delivery issue.

Austin0707 · August 25th, 2021, 12:04 PM

Quote:

Originally Posted by DannoXYZ

What procedure did you use to clean carbs?
Did you turn petcock on?
Did you hook up vacuum hose to petcock?
Choke cable connected and adjusted?

Use small squirt-bottle to spray 1cc petrol down carb-throats (or into airbox snorkel). If engine starts, you know it's fuel-delivery issue.

Yeah I hooked up the vacuum and fuel line from the tank, I will have to try that spray next! Are the other lines crucial to get hooked up? Online it shows it as a emission line not exactly sure where that goes

Austin0707 · August 25th, 2021, 12:05 PM

Quote:

Originally Posted by ducatiman

1st......Ca or 49 state model?

49 state model

ducatiman · August 25th, 2021, 12:30 PM

3 vac hoses present/connected to top of decel valve?

did you split the carbs when cleaning?

remove EPA caps over pilot screws? how many turns out are they set at?

Austin0707 · August 25th, 2021, 01:20 PM

Quote:

Originally Posted by ducatiman

3 vac hoses present/connected to top of decel valve?

did you split the carbs when cleaning?

remove EPA caps over pilot screws? how many turns out are they set at?

That's probably what I am missing, there is a valve by the manifolds thay gors to the air box and nothing is connected. I screwed it in all the way and turned it 4 times.

ducatiman · August 25th, 2021, 05:48 PM

Quote:

Originally Posted by Austin0707

That's probably what I am missing, there is a valve by the manifolds thay gors to the air box and nothing is connected. I screwed it in all the way and turned it 4 times.

valve, goes to airbox, nothing connected? could you clarify?

Austin0707 · August 25th, 2021, 05:54 PM

Quote:

Originally Posted by ducatiman

valve, goes to airbox, nothing connected? could you clarify?

Wish I could send a pic i took but its udber the handlebars and it connects to a big hose that goes over the carbs and into the airbox on the side

DannoXYZ · August 25th, 2021, 06:31 PM

Only big hose that goes into airbox's side is PAIR valve:

If so, you've got CA model.

Austin0707 · August 25th, 2021, 09:19 PM

Quote:

Originally Posted by DannoXYZ

Only big hose that goes into airbox's side is PAIR valve:

If so, you've got CA model.

Ah dang that's exactly what I have, I have the 3 spliter I'm assuming 1 goes to there then. So does it just connect 2 ways out of the 3?

DannoXYZ · August 25th, 2021, 11:28 PM

Quote:

Originally Posted by Austin0707

Ah dang that's exactly what I have, I have the 3 spliter I'm assuming 1 goes to there then. So does it just connect 2 ways out of the 3?

All three legs of splitter needs to be plugged in. You can use this arrangement with 3rd port going to drive PAIR valve.

Bob KellyIII · August 25th, 2021, 11:56 PM

Good work Danno !
you nailed it !
good man !
Bob.....

Austin0707 · August 26th, 2021, 12:19 AM

Quote:

Originally Posted by DannoXYZ

All three legs of splitter needs to be plugged in. You can use this arrangement with 3rd port going to drive PAIR valve.

Thats it! The picture didn't show a hose for the 3rd slot thats why I was confused but now I see it hooked up to that valve! Thank you so much now I can hopfully get it running! Does it matter what hose is connected to which on that 3 line?

DannoXYZ · August 26th, 2021, 09:40 AM

Doesn't matter how you have 3 legs of splitter hooked up. As long as all ends are connected to proper ports:

- carb vacuum port (source)
- coast enricher
- PAIR valve (CA emissions fitting)

Make sure vacuum hoses fit snuggly and clamps actually apply pressure. Otherwise, you can use small zip-ties.

Austin0707 · August 26th, 2021, 10:40 AM

Quote:

Originally Posted by DannoXYZ

Doesn't matter how you have 3 legs of splitter hooked up. As long as all ends are connected to proper ports:

- carb vacuum port (source)
- coast enricher
- PAIR valve (CA emissions fitting)

Make sure vacuum hoses fit snuggly and clamps actually apply pressure. Otherwise, you can use small zip-ties.

Ok perfect thank you! Will I have to take the carbs out and re clean them? I tried starting it with the vacuum from the petcock in the spot where the emmision spot goes

Triple Jim · August 26th, 2021, 11:08 AM

Quote:

Originally Posted by Austin0707

Ok perfect thank you! Will I have to take the carbs out and re clean them? I tried starting it with the vacuum from the petcock in the spot where the emmision spot goes

That didn't do anything to the carbs that would require another cleaning.

Austin0707 · August 26th, 2021, 11:41 AM

Quote:

Originally Posted by DannoXYZ

Doesn't matter how you have 3 legs of splitter hooked up. As long as all ends are connected to proper ports:

- carb vacuum port (source)
- coast enricher
- PAIR valve (CA emissions fitting)

Make sure vacuum hoses fit snuggly and clamps actually apply pressure. Otherwise, you can use small zip-ties.

Ok perfect thank you! Will I have to take the carbs out and re clean them? I tried starting it with the vacuum from the petcock in the spot where the emmision spot goes

DannoXYZ · August 27th, 2021, 11:04 AM

That should be OK. But where does 2nd-carb's vacuum port go? If it's just left open, that'll cause you problems.

Bob KellyIII · September 6th, 2021, 06:30 AM

HAHAHAH haven't heard from Austin in a month...he must have got it going again ! HAHAHAHA !
thanks for helping guys that was way over my head !
Bob.......

Triple Jim · September 6th, 2021, 06:31 AM

11 days does not a month make.

Bob KellyIII · September 6th, 2021, 02:15 PM

LOL your absolutely right ! and some people have to work for a living too !
, it just seemed like a long time to me ! .

....
Bob......

DannoXYZ · September 6th, 2021, 04:19 PM

Time flies when you're ADD!!!

August 24th, 2021, 11:05 PM	#1
Austin0707 Austin0707 Name: Austin Location: 995 88TH AVE W Join Date: Aug 2021 Motorcycle(s): 2011 ninja 250 Posts: 9	Can't get my ninja to start after carb clean Hello, I am having some trouble getting my ninja 250 to start after fully cleaning the carbs and was wondering if someone can guide me thru troubleshoot steps? I'm not even sure if I have the hoses on right for start. I have the breather from tank haning out not sure if it connects to anything, I have no hose connected to under the handlebars that goes to the airbox

August 24th, 2021, 11:50 PM	#2
Bob KellyIII Retired motorcycle Mc. Name: Robert Location: Weed, California. Join Date: Jul 2021 Motorcycle(s): 2012 Kawasaki Ninja 250R, 2021 CSC TT250, 1977 Triumph Bonneville 750cc,2001 Honda XR650L. Posts: A lot.	I got the manual for the 2012 kawasaki Ninja 250R on line and down loaded it and it has hose connection details in it.... if you have just one hose wrong that could be causing the bike not to start. the vacuum lines from the carb are the ones I would suspect first... those are the ones that go directly into the intake manifold , where you check for carburetor synchronization at... if their unplugged, the bike won't run. or of their plugged into the wrong place.... the hoses have to be right.... you can't fake it and luck out ! get a manual and double check every line on that thing.... once your satisfied all is correct then you can start trouble shooting as to why it won't start. Sorry I can't be more helpful than that but certain things MUST be right on these things, and the hoses that go everywhere are one of them. ..... Bob...... __________________________________________________ Its too late when you've gone too far !

August 25th, 2021, 05:05 AM	#3
ducatiman 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	1st......Ca or 49 state model? __________________________________________________ gordon@customcarbservices.com Custom Carb Service www.customcarbservices.com

August 25th, 2021, 08:32 AM	#5
DannoXYZ 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	What procedure did you use to clean carbs? Did you turn petcock on? Did you hook up vacuum hose to petcock? Choke cable connected and adjusted? Use small squirt-bottle to spray 1cc petrol down carb-throats (or into airbox snorkel). If engine starts, you know it's fuel-delivery issue.
	1 out of 1 members found this post helpful.

August 25th, 2021, 12:30 PM	#8
ducatiman 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	3 vac hoses present/connected to top of decel valve? did you split the carbs when cleaning? remove EPA caps over pilot screws? how many turns out are they set at? __________________________________________________ gordon@customcarbservices.com Custom Carb Service www.customcarbservices.com

August 25th, 2021, 06:03 AM	#4
jkv45 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. MOTM - Jun '18, Oct '16	Look over this section for carb info, photos, and troubleshooting tips - https://faq.ninja250.org/wiki/Intake

August 25th, 2021, 06:31 PM	#12
DannoXYZ 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	Only big hose that goes into airbox's side is PAIR valve: If so, you've got CA model.

August 25th, 2021, 11:56 PM	#15
Bob KellyIII Retired motorcycle Mc. Name: Robert Location: Weed, California. Join Date: Jul 2021 Motorcycle(s): 2012 Kawasaki Ninja 250R, 2021 CSC TT250, 1977 Triumph Bonneville 750cc,2001 Honda XR650L. Posts: A lot.	Good work Danno ! you nailed it ! good man ! Bob..... __________________________________________________ Its too late when you've gone too far !
	1 out of 1 members found this post helpful.

August 26th, 2021, 09:40 AM	#17
DannoXYZ 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	Doesn't matter how you have 3 legs of splitter hooked up. As long as all ends are connected to proper ports: - carb vacuum port (source) - coast enricher - PAIR valve (CA emissions fitting) Make sure vacuum hoses fit snuggly and clamps actually apply pressure. Otherwise, you can use small zip-ties.

August 27th, 2021, 11:04 AM	#21
DannoXYZ 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	That should be OK. But where does 2nd-carb's vacuum port go? If it's just left open, that'll cause you problems.

September 6th, 2021, 06:30 AM	#22
Bob KellyIII Retired motorcycle Mc. Name: Robert Location: Weed, California. Join Date: Jul 2021 Motorcycle(s): 2012 Kawasaki Ninja 250R, 2021 CSC TT250, 1977 Triumph Bonneville 750cc,2001 Honda XR650L. Posts: A lot.	HAHAHAH haven't heard from Austin in a month...he must have got it going again ! HAHAHAHA ! thanks for helping guys that was way over my head ! Bob....... __________________________________________________ Its too late when you've gone too far !

September 6th, 2021, 06:31 AM	#23
Triple Jim 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	11 days does not a month make.

September 6th, 2021, 02:15 PM	#24
Bob KellyIII Retired motorcycle Mc. Name: Robert Location: Weed, California. Join Date: Jul 2021 Motorcycle(s): 2012 Kawasaki Ninja 250R, 2021 CSC TT250, 1977 Triumph Bonneville 750cc,2001 Honda XR650L. Posts: A lot.	LOL your absolutely right ! and some people have to work for a living too ! , it just seemed like a long time to me ! . .... Bob...... __________________________________________________ Its too late when you've gone too far !

September 6th, 2021, 04:19 PM	#25
DannoXYZ 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	Time flies when you're ADD!!!

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