April 15th, 2018, 10:07 AM | #1 |
ninjette.org newbie
Name: David
Location: Clovis
Join Date: Apr 2018 Motorcycle(s): 2006 Ninja 250R Posts: 5
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Need help with bike!
Hello I got a 2006 250R ninja from a friend about to months ago and I am trying to get it fixed. When I got it, it had been sitting for a couple of years. I cleaned the carbs and replaced the head gasket and piston rings. The bike runs at idle but when I give it gas the rpms rev at around 3000 rpm for a couple of seconds before going back down to around 1300. This is the first bike that I have ever worked on so I don't really know to much, just learning as I go, thanks.
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April 15th, 2018, 10:42 AM | #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
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Hi and welcome!!!
Most likely your carbs need deeper cleaning: - disassemble carbs down to bare jets, needles, float-valves, etc. - floss all secret passages - ultrasonic bath with heavy-duty chemicals - soda-blast all orifices and fuel circuits - verify slide diaphragms intact with no cracks or leaks - adjust float heights to spec - test that petcock diaphragm holds vacuum (don’t have to keep applying vacuum for fuel to flow) Last futzed with by DannoXYZ; April 15th, 2018 at 02:07 PM. |
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April 15th, 2018, 01:51 PM | #3 |
ninjette.org newbie
Name: David
Location: Clovis
Join Date: Apr 2018 Motorcycle(s): 2006 Ninja 250R Posts: 5
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I have cleaned my carbs twice with chem dip and 3 times without, i also checked my diaphragms and they seem to slide back down slowly. i don't see ant holes or deformity in them.
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April 15th, 2018, 02:01 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
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Hello David, it's good to meet you. As much as you aren't happy to hear it, Danno is probably right. You can clean the carbs 50 times, but if you miss one of the tiny hidden passages, you'll keep having trouble. If you run out of patience, Ducatiman here on the board is a professional carb rebuilder and is reasonable with his fees.
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April 15th, 2018, 02:06 PM | #5 | |
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
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You need pressure, ultrasonic, and abrasives to remove the plastic-like varnish of dried gas. It cross-links into poly-vinyl bonds that can never be dissolved again. You also need to floss out the hidden passages.
Quote:
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April 15th, 2018, 03:23 PM | #6 |
ninjette.org newbie
Name: David
Location: Clovis
Join Date: Apr 2018 Motorcycle(s): 2006 Ninja 250R Posts: 5
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What would i use to floss the passage ways?
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April 15th, 2018, 03:31 PM | #7 |
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
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I use strands of copper wire.
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April 15th, 2018, 03:53 PM | #8 | |
ninjette.org certified postwhore
Name: Bill
Location: Port Huron, Michigan
Join Date: Mar 2017 Motorcycle(s): 2007 Kawasaki 250 Ninja, 1982 Honda Ascot FT500 Posts: A lot.
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Quote:
Bill
__________________________________________________
Insanity: doing the same thing over and over again expecting different results each time. |
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April 15th, 2018, 04:35 PM | #9 |
ninjette.org newbie
Name: David
Location: Clovis
Join Date: Apr 2018 Motorcycle(s): 2006 Ninja 250R Posts: 5
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How much does it cost?
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April 16th, 2018, 08:15 AM | #10 |
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
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Ducatiman refurb set of new-gen carbs for me @ $156. Another set of pre-gen carbs was $140. Some of the best money spent ever! Because on 1st set carbs, I spent way, way more than that in my time at current salary and still couldn't get it completely clean enough to run like stock. After he was done, bike ran like brand-new model off showroom floor!
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April 18th, 2018, 04:17 AM | #11 |
ninjette.org member
Name: Tim
Location: Inland, NE
Join Date: Apr 2018 Motorcycle(s): 2007 Ninja 250 Posts: 48
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All good advice. I did my own carbs when I bought my 07 this winter. It had the same symptoms yours did. I would have never cleared the passages in the carb without a lot if elbow grease spent on flossing the circuits as described in previous posts. If Ducatiman will do it for the price stated it is a bargan.
I would assume that if you replaced the head gasket and rings you replaced the spark plugs but 20+ years in service industry has taught me that assumptions can cause basic things to be missed. So please do not be offended with me bringing up possibility of fouled plugs. I had tried to run my engine before I bought my 07 on the gas that was still in the tank and then on fresh fuel and sea foam. The engine actually got to the point it would barely run. After I cleaned the carb it still would not run hardly at all. I pulled the plugs and they were fuel fowled beyond cleaning. Replaced the plugs and it fired right off and ran great!!! |
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April 18th, 2018, 02:33 PM | #12 |
ninjette.org newbie
Name: David
Location: Clovis
Join Date: Apr 2018 Motorcycle(s): 2006 Ninja 250R Posts: 5
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Yea i change the plugs thanks.
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April 18th, 2018, 03:00 PM | #13 | |
ninjette.org certified postwhore
Name: Tom
Location: Northern Virginia
Join Date: Jul 2015 Motorcycle(s): 2001 Ninja 250, 2019 Harley Ultra Classic, 2001 Suzuki SV650 Posts: A lot.
MOTM - Jan '16
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Quote:
You will save a lot of time and aggravation if you just pull them out and send them to Ducatiman. |
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April 18th, 2018, 04:03 PM | #14 | |
ninjette.org certified postwhore
Name: Bill
Location: Port Huron, Michigan
Join Date: Mar 2017 Motorcycle(s): 2007 Kawasaki 250 Ninja, 1982 Honda Ascot FT500 Posts: A lot.
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Quote:
I shouldn't speak for Ducatiman but he's sidelined for a short time and won't be restoring carbs for a while. A short while I hope. In the meantime, finger crossed, I won't need his services right away. Bill
__________________________________________________
Insanity: doing the same thing over and over again expecting different results each time. |
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April 18th, 2018, 04:54 PM | #15 |
ninjette.org member
Name: Charlie
Location: Brick NJ
Join Date: Feb 2018 Motorcycle(s): Harley Fatboy, Honda CX500, Harley XL1200C Sportster, 305 Honda Dream, Ninja 250 Posts: 174
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I have cleaned quite a few carbs. Even with a heated ultrasonic bath the tiny passages do not always get cleaned. Some carbs have jets under plugs. If you don't know the carb you can spend a lot of time and not get anywhere. The 250 Ninja carbs may not need to be split saving time and issues. I just cleaned a set of pregen and the bike runs great. Getting it started is another matter. I know it is not clean. One side needs a lot of choke and the left side needs almost none. Get it running on the right side and cut the choke to get the left side to pick up.
I am away from my shop and no ultrasonic cleaner. One thing I did notice is here in Florida. You can buy the strong chlorinated carb cleaner that is banned in the Nanny State of New Jersey. Before I leave here I am picking up a case. |
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April 18th, 2018, 05:06 PM | #16 |
ninjette.org certified postwhore
Name: Tom
Location: Northern Virginia
Join Date: Jul 2015 Motorcycle(s): 2001 Ninja 250, 2019 Harley Ultra Classic, 2001 Suzuki SV650 Posts: A lot.
MOTM - Jan '16
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Dang I was thinking of sending him the carbs from #6.
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April 18th, 2018, 05:13 PM | #17 |
ninjette.org certified postwhore
Name: Bill
Location: Port Huron, Michigan
Join Date: Mar 2017 Motorcycle(s): 2007 Kawasaki 250 Ninja, 1982 Honda Ascot FT500 Posts: A lot.
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PM him to check me out.
Bill
__________________________________________________
Insanity: doing the same thing over and over again expecting different results each time. |
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April 19th, 2018, 04:36 AM | #18 |
ninjette.org certified postwhore
Name: Tom
Location: Northern Virginia
Join Date: Jul 2015 Motorcycle(s): 2001 Ninja 250, 2019 Harley Ultra Classic, 2001 Suzuki SV650 Posts: A lot.
MOTM - Jan '16
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April 26th, 2018, 05:52 AM | #19 |
ninjette.org guru
Name: AJ
Location: Green Valley, IL
Join Date: May 2017 Motorcycle(s): 2001 Kawasaki Ninja 250r(SOLD) 2006 Kawasaki Ninja 250r full Muzzy(my pride and joy) Posts: 331
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This. Ducatiman is the god of carb cleaning.
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"A car or truck will get you from point A to B. But a motorcycle, that is the point." -unknown |
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April 26th, 2018, 03:10 PM | #20 |
ninjette.org certified postwhore
Name: Gordon
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I'm humbled, thank you for kind words but oh, please "god" of carbs? Don't be silly, though I admit a heckuva lot of effort goes in.
Recently had an "argument" with some EX500 pilot jets, rotted, 1 broke off inside its housing. Working an inch down inside...got lucky, was able to safely remove it. I've recovered remarkably quick after a medical procedure, so contact via PM if needed ...I'm at your service yet again.
__________________________________________________
gordon@customcarbservices.com Custom Carb Service www.customcarbservices.com |
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April 26th, 2018, 03:28 PM | #21 |
ninjette.org dude
Name: 1 guess :-)
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Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much.
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/moved to pre-gen tech
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Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered) |
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April 26th, 2018, 07:58 PM | #22 | |
ninjette.org certified postwhore
Name: Bill
Location: Port Huron, Michigan
Join Date: Mar 2017 Motorcycle(s): 2007 Kawasaki 250 Ninja, 1982 Honda Ascot FT500 Posts: A lot.
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Quote:
Cheers, Bill
__________________________________________________
Insanity: doing the same thing over and over again expecting different results each time. |
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April 28th, 2018, 01:58 PM | #23 | |
ninjette.org member
Name: Juan
Location: San Francisco/Davis
Join Date: Mar 2018 Motorcycle(s): Ninja 250 2007 Posts: 21
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Quote:
The very first time I pulled my carbs out my bike was running pretty crappy, can't recall the exact symptoms but it definitely wasn't the carbs. One of my rubber boots had an itty bitty piece of rubber missing where it mates with the engine side which was causing it to run badly. Once i replaced the bad boot my troubles were solved. Also another source of woes was making sure that the airbox is properly mounted onto the carbs. Hope this helps. |
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