Question about 2003 Suzuki RM 125

3 Answers

Sputtering I have a 2003 Rm125 bought from a local dealer. The bike was a trade in back in April of 2008. It has been sitting there ever since waiting for someone to buy it. Well I bought it today and after warming up it seems to sputter when you get on the throttle. Could this just be from sitting or can it be something more? I put new fuel in it when I got it home and it still does it. Cleaned the carb and rode it for a good hour on the track. And it still is doing it. Any help would be great...

Posted by on

  • chriskowalcz Dec 12, 2008

    I am in the process of checking that out now. It sputters just before it hits the power band and then gets through it. I have no history on the bike other than it belonged to a spoiled 17 year old kid that rode it for a little while until he got a 4 wheeler. you know the type. It does smoke a whiteish blue and drips some black oil out the pipe, but that is due to it running rich I believe. I would rather run it that way until I am sure. I am running at 40 to 1 mix. 


    Thanks Chris

  • tpa2461 Mar 02, 2009

    I have 2004 and a 1999 rm 125 my 2004 has been doing the same thing . I have done the top end rebuilt the carb tried all jetting lean and rich still does it . next I went to Elec and checked the sator and stator pick up and also put the timing up and down still does it . the only thing i have not done is coil or replace stator and elec box I have no problems with the 99 Rm And I also have a 2004 RM 250 and no problem there Please Help

×

3 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 11 Answers

I would take it back to the dealer. They should have done a PDI Before you picked it up It should not have left the dealer If it didnot run right...

Posted on Apr 28, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I also had this problem on a 200 blaster that i had and the mix was not right at first i was mixing it 32:1 and it was on a new build (just had the top end bored and all new rings piston reds the whole 9 yards) when i got the advice to run it at 28:1 it solved the problem you might try to run a heavier mix such as a 32:1 and see how that goes but i know in my old blaster it made all the differance in the world

Posted on Feb 19, 2009

  • Level 1:

    An expert who has achieved level 1.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 7 Answers

It could be a few things causeing that. Make sure the air filter is cleaned and properly oiled, check the ignition system for good spark and make sure the stator is timed properly, try a new spark plug and gap it to spec., inspect the reeds, make sure they are not broken or warped, check the compression. If everything checks out ok, it might just be a jetting or carb adjustment issue.
Where abouts in the throtle range does it "sputer" ? during acceleration ? at full throtle ? at an idle ? Do you know any history on the bike as to when the top end was last re-built ? Does it seem to smoke alot from the exhaust ? whiteish blue smoke ? brownish black smoke ? Do you notice if your coolant level goes down alot ?

Posted on Dec 12, 2008

  • Kenny W Dec 12, 2008

    Too much oil will make it sputter but 40:1 should be fine. The type of oil you use can make a difference aswell because some oils do not burn as well as others. I always used "Amsoil Dominator" synthetic in my yz250. Never had a problem, never fouled a plug, and it went 8 years on the origonal bottom end bearings. You can try adjusting the air screw (open it up a bit). Also try lowering the needle one clip position (one groove towards the top of the needle). Also check the burn on the plug. It should be a light brown colour. Black meens too rich, white meens too lean. It does sound more like a jetting issue though. That will take some testing and track tuning to get it straightend out. You'll need to know what carb is on the bike (mikuni or keihin), then you'll need to find out what jets are in it now. Go to your local shop and order 3 jet sizes leaner and 3 jets sizes richer. Try each jet in sequence untill you get the desired performance and plug burn (light brown).

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Service manual rm125


I would suggest trying a local dealer of this brand and see if they have a service manual for this bike. Other shops that sell/service motorcycles may also carry the book for your specific model. This isn't free, but often times pays for itself after one repair done at home.

Oct 15, 2013 | 2010 Vuka RM 125

2 Answers

I have a 2003 suzuki rm125 cc. i don't have a manuel. how much crankcase oil do i need to put in it once i drain it...also, i just bought 10w-40 for a four stroke will that work


quantity is .75 liters, and no, that oil will not work. You have a very high revving engine. You need to get yourself oil for a race engine. Take a trip to your local bike shop, they will have what you need. Even if they dont sell suzuki, its not specific to the manufacturer

Mar 06, 2011 | 2003 Suzuki RM 125

1 Answer

My 98 rm 125's water pump seal is leaking and it needs a top end rebuild are their any good online guides or videos to help me do it?


9003904_rm125__thumb.jpg 5.00 USD
Suzuki Rm125 Service Manual Repair 2004 Rm 125

Instant download of the official manual for the RM125 2 stroke bike. Specifically for the 2004 model, but can also...http://www.tradebit.com/filedetail.php/9003904-suzuki-rm125-service-manual-repair-2004-rm


I hope that this helps you and please do not forget to rate/vote and place a testimonial on my advice.


Wicked Angel


Nov 19, 2010 | 2003 Suzuki RM 125

1 Answer

Im 5'7 at 175lb & will soon own an 08 KTM 530 EXC-R street legal version it sits way to tall for me, what can I do to lower without taking to much away from performance but atleast have two feet on the...


You need to work with a suspension specialist shop to lower your bike. They can take apart the forks and shock and install spacers to limit the travel and make the bike lower. This mod is easily removed in the future if you decide to sell the bike etc.

Try Enduro Engineering or Pro Action There are other local shops that do suspension work... ask around at local shops and the KTM dealer etc.

Sep 22, 2010 | 2008 KTM 530 EXC-R

1 Answer

Transmission will shift into, or out of gear, but will not spring back into position. For instance. If you want to shift into first gear, you have to push down on the shift lever, then back up just a...


If shaft and lever is undamaged, more than likely the gear selector shaft spring is misaligned or broken. Place in neutral. Remove pinch bolt from gear lever and remove lever. Undo covers and sprocket for access to selector mechanism.

The link below has exploded view diagrams and part numbers/names for the whole bike in sections.

Gear shifting is 6th from bottom of list.
Goodluck and Cheers.

http://www.motorcycle.mrsuzukiparts.com/2003-RM125.htm

May 19, 2010 | 2003 Suzuki RM 125

2 Answers

Misfiring 2007 Honda VFR 800


I would say that your bike may be running a little lean. I usually replace the jets on all my bikes as soon as I get them as the emissions requirements mandate that the manufacturers pass stringent emissions tests prior to the dealer selling them. Some bikes wont even idle or run, especially off road bikes from places like California. and in these cases you must re jet it is a must! I even throw away or drill larger holes into my air cleaner cover.

Good Luck!
Geodesygold

Sep 22, 2009 | Honda VFR 800 Motorcycles

1 Answer

Suzuki rm125 1983 engine


It will not necessarily hurt anything but it is not quite right. Be sure th shut off the gas when not riding the bike. Check and be sure the gas valve is shutting off the gas fully.

Aug 13, 2009 | 2003 Suzuki RM 125

2 Answers

I have a 2008 Te250 Husqvarna, it's brand new as I only have 6 hours on it, when riding on the road the bike starts to shimmy or wobble at about 50km/hr, the wobble increases as I go faster, does anyone...


Take it back to the dealer or any other dealer. It is under warranty. Take your sales receipt or other documentation with you to prove you just bought it new. The dealer can get you a service manual.

Please rate this solution. Thanks!

Apr 19, 2009 | 2008 Husqvarna TE 250

Not finding what you are looking for?
2003 Suzuki RM 125 Logo

688 people viewed this question

Ask a Question

Usually answered in minutes!

Top Suzuki Experts

yadayada
yadayada

Level 3 Expert

60769 Answers

Arnie Burke
Arnie Burke

Level 3 Expert

4471 Answers

Ed Nelson
Ed Nelson

Level 2 Expert

149 Answers

Are you a Suzuki Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...