Question about 2004 Honda CR 125 R

1 Answer

Hi i wondering if i change my original pipe and muffler for a fmf tune pipe and a fmf muffler do i have to change some jet too.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 3,567 Answers

There is no need to change jets. Messing with them will do more harm than good.

Posted on Jul 14, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Need 3000 ft elevation jetting for 2002 yz250 with fmf SST pipe and fmf spark arrestor


Hey Anon,
Proper and correct jetting is something that can only be achieved in person by a REAL MECHANIC that KNOWS how to "read" a spark plug,,,With the mods you mentioned.. you need to know the stock jet sizes..a close guess would be reduce the main jet by two or three steps and lower the needle one clip position... oil mix should be at least 32:1....or better yet 28:1.. KEEP the oil mixture and jet the carb for performance....( I see TOO MANY IDIOTS that instead of jetting a carb correctly just reduce the oil ..some as low as 50:1(INSANE) just to keep from fouling plugs.).. then WONDER why their engine doesn't last long... hahaha????
YOU > BE SMART!!

Aug 25, 2013 | 2005 Yamaha yZ 250 F

1 Answer

I was wondering what kind of jets and needles I should put in my 99 yamaha banshee after I just rebuilt it. It is bored 80 over, has fmf pipes. what would be a good jet to start with?


whatever a professional manual or pro sez-jets are a delicate thing cause you cud end up rebuildin again--the web n fixya has books or getta hold of a motocrosser

Aug 26, 2010 | 2003 Yamaha YZ 125

2 Answers

WHAT SIZE MAIN JET AND PILOT JET ARE STANDARD WITH THE BIKE


Hi and welcome to FixYa,

On a 2003 Kawasaki KLX125, these are standards:
  • main jet - 145
  • pilot jet - 17.5

Good luck and thank you for asking FixYa. Happy Holidays.

Dec 18, 2009 | 2003 kawasaki KLX 125

3 Answers

Exssive oil from tail pipe yz 125


Hi, when you change your pipe to the FMF you reduced the back pressure and gave it more flow. That causes it to run a little "rich". Look at your spark plug and check the color of it, it should be a nice tan color. If its a dark brown then you need to "lean" out your bike. The easiest way to do that is by taking the slide out of the carb and taking out the main jet, the lock washer is set to the middle position for a stock set-up. Move it down 2 notches and then run it and see what your plug looks like. The black "goo" is the unburned oil from not running lean enough. Another trick to try is run a NGK-EV plug. it burns hotter so it will help with the oil problem (and make it a little more snappy also). And as an added bonus it will be easier to start.

Aug 21, 2009 | 2003 Yamaha YZ 250

1 Answer

Just looking for general advice...on FMF Pipe Install


i changed my pipe on 07 dt125lc and did not rejet, seemed fine until i holed a piston. best to rejet me thinks, about £20 instead of £150 for piston rebore bearings and jets plus the time to re build.

Apr 25, 2009 | 2003 Yamaha YZ 125

1 Answer

New slip-on FMF Powercore 4 on 02' TT-R250


i looked up in the book for jets for your bike,i diden't see any.you could try to drill out the jet but they are brass.and very fragile.unless you are a machinest.also did you upgrade your air filter to go along with your new exhaust?

Apr 13, 2009 | 2002 Yamaha TT-R 250

2 Answers

Crf 150f backfire


change the jetting...youcan contact FMF for thier setup recommendations for running that pipe with the bike...very common problem and jetting will take care of alot of the issue

Mar 31, 2009 | 2003 Honda CRF 150 F

1 Answer

The best pipe/muffler 07' ec200


I am not sure as to where you wwant more power. I hear the JD needle makes the bike smoother. If you need more bottom end power a switch for 13:52 gearing will help LTR power valve cover a POWER NOW PLUS POWER NOW (carb divider plates), FMF Gnarly for bottom end, and a 2K2 igntion. As for your jetting it sounds like you could go down on the pilot one size and raise the clip up one position.,,,

Nov 10, 2008 | 2008 Gas Gas EC 200 Hobby

Not finding what you are looking for?
2004 Honda CR 125 R Logo

Related Topics:

166 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honda Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4536 Answers

yadayada
yadayada

Level 3 Expert

76846 Answers

bazzz7071
bazzz7071

Level 2 Expert

342 Answers

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

Answer questions

Manuals & User Guides

Loading...