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Old July 31st, 2022, 10:41 PM   #1
JamminJimmy
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Name: James
Location: Hudson, ohio
Join Date: May 2022

Motorcycle(s): 2005 kawasaki ninja 2005

Posts: 3
Wink Jammin down the wrong highway:

hey guys and ladies
I am a proud owner of a 250r. But its seen better days. When i got it it was running perfect, no prob. Four months later i saw a drip drip from the carb. So i took off the carb, cleaned it and thats when all the problems start. I raced back in the day, two rm 80s, couldnt cut it and swapped em for a cr250. That was 30 plus years ago. I worked on my own bikes, but got cold. Thought it never left you. bike going on second summer no ride, what a waste. thought it was carb issues so i kept cleaning. eventually i just gave in and got a new carb. That was not even the issue. Checked the petcock and it was blown to pieces. Replaced new. and now the present:
Starts up but rev is i believe 9 thousand if im lucky. no power, bogs down on any kind of hill. Im stumped and ready to hang my hat and let a mechanic take over. but man that hurts. I should be able to troubleshoot this. Dont know when the valves have been adjusted, but the miles on my bike was like 8 grand when i got it. and therfore should be okay. How could it have ran like a champ, then ........

Last futzed with by JamminJimmy; August 1st, 2022 at 01:32 AM. Reason: add pic
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Old July 31st, 2022, 11:04 PM   #2
NevadaWolf
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Name: Teri
Location: 39°52'40.7"N 118°23'53.8"W (Northern NV)
Join Date: Jun 2012

Motorcycle(s): 2012 Ninja 250, 102k+ miles -- 2014 CB500X, 42k+ miles

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JamminJimmy! Glad to have you aboard...
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Old August 1st, 2022, 11:19 AM   #3
thedrewski86
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Name: Drew
Location: SoCal
Join Date: Jul 2013

Motorcycle(s): 2007 SV650S 2005 EX250F

Posts: 378
Welcome, sorry to hear of your issues. Valves are simple enough to check, I would start there. Once that is ruled out, there is a 99.99% chance that the carbs are still the issue These little ninjettes have the most finicky modern carbs I have ever dealt with, and they have to be kept beyond clean to work. I finally wound up sending my set off to fellow forum member ducatiman who offers quick and reasonable refurbishing services. Now I just run Sta-bil in my gas and give them a quick blow-through with carb cleaner and compressed air after I pull the bike out and it's good to go!
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Old August 1st, 2022, 11:32 AM   #4
Ceeloo Yello
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Location: Hawaii
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Motorcycle(s): 250

Posts: 463
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Old August 1st, 2022, 02:12 PM   #5
DannoXYZ
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Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011

Motorcycle(s): CB125T EX250F-street Ninja250R-race CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR VFR750F

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hi and welcome!!!

These carbs aren't easy, need to disassemble down to every last nut, bolt & individual component. Scrub everything including hidden secret passages with PEA-based fuel-system cleaner (spray "carb cleaners " no longer work due to removal of chlorinated compounds). Ultrasonic soak everything, micro soda-blast, set float-levels, sync.

Search for "clean carbs ducatiman" for procedure and photos to get carbs factory-fresh clean. I usually send them to Gordon @ https://completecustomcarbs.com since he does better job of restoration than any human can possibly do.
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Old August 3rd, 2022, 01:21 PM   #6
Baby NinjaRR
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Name: Ken
Location: Portland Or
Join Date: Jul 2022

Motorcycle(s): 2006 Ex250F-RR

Posts: 18
Pregens really benefit from better jetting, especially if that ridiculous airbox is messed with. I think one can get 2 birds with 1 stone by going at those CVKs w a jet kit while cleaning everything. I have good results w Dynojet stage 3-ish kit w pod filters but the intake noise can be a bit obnoxious for some riders, and the Factory Pro kits seem to be a more popular approach. The stock exhaust system doesn't seem to be too much of a limiting factor aside from the extra weight of 2 mufflers- I hammered my baffles out, felt no discernable diff in power band, and couldn't deal with the racket lol.
p.s. I was led to believe the issues with valve lash closing up and burning exhaust valves were more of a thing with the '89(?) and older models, as they apparently had softer valve seats. My '06 w 26kmiles was still on the loose side of ideal but I don't know when it had been adjusted last, probably about the same time someone snapped of a valve cover bolt in cam tower lol.
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Old August 4th, 2022, 09:23 AM   #7
JamminJimmy
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Name: James
Location: Hudson, ohio
Join Date: May 2022

Motorcycle(s): 2005 kawasaki ninja 2005

Posts: 3
Ty for sharing
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Old August 4th, 2022, 09:31 AM   #8
JamminJimmy
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Name: James
Location: Hudson, ohio
Join Date: May 2022

Motorcycle(s): 2005 kawasaki ninja 2005

Posts: 3
Am now interested in knowing: If I buy new carb and petcock, and just put them on, am i leaving anything out. Because they were new i just assumed that I didnt have to do anything to them. Also, everytime i cleaned the carb, I never took the two carbs apart from each other. Is this right? Nor have i compared the jetting. Any feedback on this???
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Old August 4th, 2022, 02:47 PM   #9
ducatiman
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Name: Gordon
Location: new york
Join Date: Sep 2009

Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R

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MOTM - Nov '18, Mar '17
Please define new.....factory new at $1147 list price?

The only other carb I can think of which would be as close to new as possible ...a TRUSTWORTHY bolt-on runner/ confirmed jetting/ containing brand new consumables is my FULLY REFURBED #99 link right here:

https://www.ninjette.org/forums/showthread.php?t=367513

IF you are truly interested, contact me....I'll throw in a fully REFURBED petcock at no charge!
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Last futzed with by ducatiman; August 4th, 2022 at 06:45 PM.
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Old August 4th, 2022, 03:00 PM   #10
Baby NinjaRR
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Name: Ken
Location: Portland Or
Join Date: Jul 2022

Motorcycle(s): 2006 Ex250F-RR

Posts: 18
I did have to separate my carbs but can't recall the reason. The biggest issue is getting frozen screws out, an impact driver w a hammer and small vice grips are a given if the carbs haven't been torn down once already. The other thing was dealing with the tiny parts, and not losing them. I had to make a few runs to the hardware store for shim washers, 2.5mm screws, etc.
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Old August 4th, 2022, 03:21 PM   #11
Baby NinjaRR
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Name: Ken
Location: Portland Or
Join Date: Jul 2022

Motorcycle(s): 2006 Ex250F-RR

Posts: 18
P.s. I would've went the refurbished route myself had I known it was a thing those tiny carb parts can be soul suckingly frustrating to deal w lol.
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Old August 4th, 2022, 04:20 PM   #12
DannoXYZ
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Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011

Motorcycle(s): CB125T EX250F-street Ninja250R-race CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR VFR750F

Posts: A lot.
MOTY - 2018, MOTM - Nov '17
Heh, heh, ... send them to ducatiman, they'll come back brand-new!
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Old August 15th, 2022, 11:17 AM   #13
Snake
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Name: Rick
Location: Alexandria, Louisiana
Join Date: Jan 2009

Motorcycle(s): 05 Blue Ninja 250

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Hello and welcome!
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