02 - 220: Runs rough Before power-band
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02 - 220: Runs rough Before power-band
Hi Everyone,
I live at sea-level and have purchased a 2002 KDX220 which runs very rough & choppy All the way up to the power-band when it then runs fine. Also it leaks fuel from the carb overflow when off and upright.
I have replaced the spark plug but to no avail.
After reading about possible solutions I've pulled the carburetor and reeds.
The carb itself looks good. I've submerged the floats in water for a while and they do not seem to be leaking as they float nice and level. The float needle is clean, rubber looks good and pin spring is working fine. Main jet(155) and slow jet(48) also seem fine. Also the reeds have no real indicator of wear, chipping, or any damage.
I'm stuck for an answer and am looking for help. Any ideas??
(Please do not quote this post with pictures)
I'd like to deal with getting the reeds and carb back on before considering other possible problems like the KIPS valves...
Many Thanks to All...
Below are some pictures of the carb and some of the parts.
02 KDX220 Keihin Carb
Inside the carb
Float Needle.
Main Jet
Slow Jet
Reeds look good on both sides
I live at sea-level and have purchased a 2002 KDX220 which runs very rough & choppy All the way up to the power-band when it then runs fine. Also it leaks fuel from the carb overflow when off and upright.
I have replaced the spark plug but to no avail.
After reading about possible solutions I've pulled the carburetor and reeds.
The carb itself looks good. I've submerged the floats in water for a while and they do not seem to be leaking as they float nice and level. The float needle is clean, rubber looks good and pin spring is working fine. Main jet(155) and slow jet(48) also seem fine. Also the reeds have no real indicator of wear, chipping, or any damage.
I'm stuck for an answer and am looking for help. Any ideas??
(Please do not quote this post with pictures)
I'd like to deal with getting the reeds and carb back on before considering other possible problems like the KIPS valves...
Many Thanks to All...
Below are some pictures of the carb and some of the parts.
02 KDX220 Keihin Carb
Inside the carb
Float Needle.
Main Jet
Slow Jet
Reeds look good on both sides
Last edited by Shadowdev on 03:15 pm Oct 11 2014, edited 1 time in total.
- G22inSC
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Re: 02 - 220: Runs rough Before power-band
Rough and choppy as in "sputtering rich" type four stroking? If you are at sea level with current 70s temps and a 220 carb I'm going to guess that you are very rich which is giving the rough running condition. Sounds like maybe it can't clean itself out.
'05 Kaw KDX200 ('00 KX125 forks / '02 RM125 Showa "K2" shock)
'14 Yam YZ125(x) (oldest boy's)
'22 Yam YZ125X (youngest boy's)
'17 Yam YZ85 (soon to be FOR SALE)
'10 Honda Recon (wife's)
'08 Kaw KX65 (Sold)
'07 KTM 50SX Sr. (Sold)
'09 Yam PW50 (retired)
'97 Kaw KX250 (Sold)
Gallery
2005 KDX200 Bike Profile
'14 Yam YZ125(x) (oldest boy's)
'22 Yam YZ125X (youngest boy's)
'17 Yam YZ85 (soon to be FOR SALE)
'10 Honda Recon (wife's)
'08 Kaw KX65 (Sold)
'07 KTM 50SX Sr. (Sold)
'09 Yam PW50 (retired)
'97 Kaw KX250 (Sold)
Gallery
2005 KDX200 Bike Profile
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Re: 02 - 220: Runs rough Before power-band
Thanks G22...G22inSC wrote:Rough and choppy as in "sputtering rich" type four stroking? If you are at sea level with current 70s temps and a 220 carb I'm going to guess that you are very rich which is giving the rough running condition. Sounds like maybe it can't clean itself out.
To be honest, I don't know if it's 'four stroking' as I'm not familiar with an example of it. I've only Read on what four stroking is but wouldn't recognize it.
I have cleaned and just now reassembled the carb, air filters, reeds and all the connecting parts. Still.... no improvement to speak of.
If it's running really rich, Is changing the jetting the proper method to lean out the bike, or is it an adjustment at the carb?
Thank you again,
SD
- G22inSC
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Re: 02 - 220: Runs rough Before power-band
Pick a particular octane gas and premix ratio and then stick with it. The only carb adjustment you have is the idle screw (no effect on rich/lean) and the air screw. The air screw will adjust minor rich/lean adjustments at about idle to 1/8 throttle or just above. All other adjusting is done by switching brass (jets).
'05 Kaw KDX200 ('00 KX125 forks / '02 RM125 Showa "K2" shock)
'14 Yam YZ125(x) (oldest boy's)
'22 Yam YZ125X (youngest boy's)
'17 Yam YZ85 (soon to be FOR SALE)
'10 Honda Recon (wife's)
'08 Kaw KX65 (Sold)
'07 KTM 50SX Sr. (Sold)
'09 Yam PW50 (retired)
'97 Kaw KX250 (Sold)
Gallery
2005 KDX200 Bike Profile
'14 Yam YZ125(x) (oldest boy's)
'22 Yam YZ125X (youngest boy's)
'17 Yam YZ85 (soon to be FOR SALE)
'10 Honda Recon (wife's)
'08 Kaw KX65 (Sold)
'07 KTM 50SX Sr. (Sold)
'09 Yam PW50 (retired)
'97 Kaw KX250 (Sold)
Gallery
2005 KDX200 Bike Profile
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02 - 220: Runs rough Before power-band
First thing you need to do is stop that carb from leaking. If it is flooding when off it is pouring fuel in when running causing it to be very rich. This is most likely the whole problem. Carb seat could have had a bit of dirt in it or you may need to adjust the floats a bit. Shake your floats to your ear. Make sure you hear no fuel in them. Water is much thicker then fuel and is not a good test. good luck.
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Re: 02 - 220: Runs rough Before power-band
I have to agree , fix the float , someone posted a pic not to long ago that shows how he and I both adjust the float . It should be level with the body of the carb when closed( holding carb upside down with the float bowl off) Then blow air thru thefuel supply tube with a hose and your mouth , make sure there is no escaping air , make sure both sides of the float look the same( even on both sides) . If you hold up the reed block toward a light with reeds installed make sure you can see no daylight between the reeds and the block if you can you need new reeds . This float problem sounds like your problem, But you may be to rich on jetting as well .
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Re: 02 - 220: Runs rough Before power-band
Adjust the float.
Factory jets are 145 main 42 pilot. Your bike is rich! Read the jetting tutorial in the new to you bike thread.
Factory jets are 145 main 42 pilot. Your bike is rich! Read the jetting tutorial in the new to you bike thread.
2002 KDX 220R
2003 KLR 650
2003 KLR 650
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Re: 02 - 220: Runs rough Before power-band
Sounds good. I'll check the floats again & whether it's still leaking now that it's been cleaned and rebuilt. Does anyone have a Float tutorial?. I'll get the stock jets and let you know.
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Re: 02 - 220: Runs rough Before power-band
You just adjust the float by slightly bending the little tap the needle is on. As Jerry said make it level and do the air test. Even if the carb stops leaking the float can be still a little high. Keep us posted.
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02 - 220: Runs rough Before power-band
155/48 jets are usually for the 200....check that the carb isn't that off a 200....the needle may be that of a 200 too ?
Measure the front of the carb inner diameter...220-33mm 200-35mm..
Measure the front of the carb inner diameter...220-33mm 200-35mm..
- G22inSC
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Re: 02 - 220: Runs rough Before power-band
Can't remember...is the carb not marked or stamped such as "PWK 33"? For some reason I was thinking my 200 had the 35 somewhere on the carb body.
'05 Kaw KDX200 ('00 KX125 forks / '02 RM125 Showa "K2" shock)
'14 Yam YZ125(x) (oldest boy's)
'22 Yam YZ125X (youngest boy's)
'17 Yam YZ85 (soon to be FOR SALE)
'10 Honda Recon (wife's)
'08 Kaw KX65 (Sold)
'07 KTM 50SX Sr. (Sold)
'09 Yam PW50 (retired)
'97 Kaw KX250 (Sold)
Gallery
2005 KDX200 Bike Profile
'14 Yam YZ125(x) (oldest boy's)
'22 Yam YZ125X (youngest boy's)
'17 Yam YZ85 (soon to be FOR SALE)
'10 Honda Recon (wife's)
'08 Kaw KX65 (Sold)
'07 KTM 50SX Sr. (Sold)
'09 Yam PW50 (retired)
'97 Kaw KX250 (Sold)
Gallery
2005 KDX200 Bike Profile
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Re: 02 - 220: Runs rough Before power-band
Looked on my 220 and on right side has PWK (like in pic) but no number. Pair of calipers will due. Cornishwrecker made a good point. The 200 carb is a popular upgrade to the 220.
- IDRIDR
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Re: 02 - 220: Runs rough Before power-band
I'm curious how so. What does the 200 carb do better on the 220?s10gto wrote:The 200 carb is a popular upgrade to the 220.
2003 KDX 220. RB Carb & Head Mods. Desert pipe. She's a runner!
2006 KLX 250 w/351 big bore. A well-sorted dual sporter.
2006 KLR 650. Mostly stock.
2014 Suzuki DL1000.
2006 KLX 250 w/351 big bore. A well-sorted dual sporter.
2006 KLR 650. Mostly stock.
2014 Suzuki DL1000.
- G22inSC
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Re: 02 - 220: Runs rough Before power-band
IDRIDR wrote:I'm curious how so. What does the 200 carb do better on the 220?s10gto wrote:The 200 carb is a popular upgrade to the 220.
33mm vs 35mm. More topend.
'05 Kaw KDX200 ('00 KX125 forks / '02 RM125 Showa "K2" shock)
'14 Yam YZ125(x) (oldest boy's)
'22 Yam YZ125X (youngest boy's)
'17 Yam YZ85 (soon to be FOR SALE)
'10 Honda Recon (wife's)
'08 Kaw KX65 (Sold)
'07 KTM 50SX Sr. (Sold)
'09 Yam PW50 (retired)
'97 Kaw KX250 (Sold)
Gallery
2005 KDX200 Bike Profile
'14 Yam YZ125(x) (oldest boy's)
'22 Yam YZ125X (youngest boy's)
'17 Yam YZ85 (soon to be FOR SALE)
'10 Honda Recon (wife's)
'08 Kaw KX65 (Sold)
'07 KTM 50SX Sr. (Sold)
'09 Yam PW50 (retired)
'97 Kaw KX250 (Sold)
Gallery
2005 KDX200 Bike Profile
- IDRIDR
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Re: 02 - 220: Runs rough Before power-band
Thanks. After your reply, I did a little googling and found this interesting article: http://www.cyclepedia.com/kawasaki-kdx200/G22inSC wrote:IDRIDR wrote:I'm curious how so. What does the 200 carb do better on the 220?s10gto wrote:The 200 carb is a popular upgrade to the 220.
33mm vs 35mm. More topend.
My goal for my newly acquired 220 is a torquey light weight trail bike. Low-end grunt for steep, rocky, technical trails. Top-end balls-out maximum power will rarely be needed. With this in mind, is my assumption that I don't need the larger 200 carb reasonable?
Sorry for the thread hijack.
Last edited by IDRIDR on 05:01 pm Oct 13 2014, edited 1 time in total.
2003 KDX 220. RB Carb & Head Mods. Desert pipe. She's a runner!
2006 KLX 250 w/351 big bore. A well-sorted dual sporter.
2006 KLR 650. Mostly stock.
2014 Suzuki DL1000.
2006 KLX 250 w/351 big bore. A well-sorted dual sporter.
2006 KLR 650. Mostly stock.
2014 Suzuki DL1000.
- Julien D
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Re: 02 - 220: Runs rough Before power-band
I have a hard time believing that a 220 is going to run worth a darn with a 155mj.
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Re: 02 - 220: Runs rough Before power-band
So get this,
I have a 97-200 and it didn't dawn on me the other day to simply swap out the carbs and see what happened. But I did today, and Man-O-Man the 220 Really likes the 200 carb. Ran Great!!
The 200 carb is indeed a larger diameter and running a 160 main. But alas my son rides the 200 and so back it went, pfttt... kids.
After working with the 220 carb float tab, I still can't get it to stop overflowing and so have deduced that the spring on the float needle must be weak as the rubber itself looks good. I figure at this point to just rebuild the 220 carb using a 145 Main, new Float Needle, and maybe new Float, so I began looking for parts but WoW, they're pricy.
Would anyone know if there's a 'reasonable' rebuild kit for the 220 carb or if the parts links below seem like they'd work?
Float Needle
http://www.ebay.com/itm/KEIHIN-spec-Spa ... b6&vxp=mtr
Float
http://www.ebay.com/itm/NEW-KEIHIN-FLOA ... c7&vxp=mtr
145 Main Jet
http://www.ebay.com/itm/Main-Air-Jet-13 ... c6&vxp=mtr
I have a 97-200 and it didn't dawn on me the other day to simply swap out the carbs and see what happened. But I did today, and Man-O-Man the 220 Really likes the 200 carb. Ran Great!!
The 200 carb is indeed a larger diameter and running a 160 main. But alas my son rides the 200 and so back it went, pfttt... kids.
After working with the 220 carb float tab, I still can't get it to stop overflowing and so have deduced that the spring on the float needle must be weak as the rubber itself looks good. I figure at this point to just rebuild the 220 carb using a 145 Main, new Float Needle, and maybe new Float, so I began looking for parts but WoW, they're pricy.
Would anyone know if there's a 'reasonable' rebuild kit for the 220 carb or if the parts links below seem like they'd work?
Float Needle
http://www.ebay.com/itm/KEIHIN-spec-Spa ... b6&vxp=mtr
Float
http://www.ebay.com/itm/NEW-KEIHIN-FLOA ... c7&vxp=mtr
145 Main Jet
http://www.ebay.com/itm/Main-Air-Jet-13 ... c6&vxp=mtr
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02 - 220: Runs rough Before power-band
2002 KDX 220R
2003 KLR 650
2003 KLR 650
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02 - 220: Runs rough Before power-band
Did you try the air test? It is possible the fuel is finding its way around the needles seat housing.
- diymirage
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Re: 02 - 220: Runs rough Before power-band
Shadowdev wrote:After working with the 220 carb float tab, I still can't get it to stop overflowing and so have deduced that the spring on the float needle must be weak as the rubber itself looks good.
the spring on the needle is really more of a hinge then anything else
it aids zero in sealing the needle
next time you go spend a dime take the top of the reservoir and see what stops the water from overflowing after it refills
that same principle is at work in your carb, the cycle goes as follows
1. carb is empty, gravity pulls float down and needle is down, allowing fuel into the floatbowl
2. you open your fuel tap and fuel starts filling up the float bowl
3. the float floats on top of the fuel pushing the needle into hole, closing it off once the float bowl is full
4. you get on the gas, air is sucked into the engine, and with it, fuel
5. as more fuel gets sucked into the engine the fuel level drops, the float, floating on top of the fuel level also drops and the needle moves away from the fuel inlet, allowing more fuel to pour into the float bowl
6, repeat steps 3-5
the float is what pushes the needle up, not the springy
and, just in case that wasn't clear enough here is a great video that explains it all
(not really, but still a great video)
[youtube][/youtube]
newbbewb wrote:DIYmirage has it right.
-1996 KDX 200 woods weapon (converted to 99 green body)
-1996 KDX 200 plated street toy (barney edition)
-2003 Yamaha TTR125-L (wifeys bike)
-1997 KDX 220 project bike