Rich or Lean?

ahskeetz · May 6th, 2009, 04:43 PM

Hey everyone, I've had my bike on 3 washers for a couple months now, and it feels good, but it smells really rich. I have the snorkel pulled and a full AP exhaust.

I rode a stock 250 the other day and it feels pretty fast actually, maybe even faster than my bike!!! Maybe it's because i usually ride my bike in the lower rpm range in the city bc its so loud.. and with the quiet stock exhaust , i was more willing to bring it to it's power range

.

anyhow, i was wondering if anyone knows how to tell if the bike is too rich or too lean? I was contemplating taking off 1 washer, so there's only 2 washers and then seeing how hard it pulled.. what do you guys think?

TnNinjaGirl · May 6th, 2009, 04:47 PM

What is your fuel mileage?

There are several ways to tell if your bike is rich or lean, but the most certain way has to do with you checking the plugs. If your fuel mileage is decent you are probably fine. If you are getting insanely good mileage, lean, if bad mileage, rich.

Usually if you are too rich you will bog down. Don't get this confused with starving for gas if it is too lean.

When it is lean you may feel it start to surge as you easily roll through low, mid and high range of the carb settings.

Most likely you have everything set pretty close to right. If you feel like experimenting you probably won't hurt anything so it's worth a shot.

ahskeetz · May 6th, 2009, 04:50 PM

Well my gas mileage is typically 46mpg or so, but on long highway trips i get about 41 mpg, probably a sign its running rich.

what do you mean by "surging"?

TnNinjaGirl · May 6th, 2009, 04:53 PM

Sounds a tad rich.

It's kind of hard to explain, but if you slowly roll the throttle or keep it in one place you will notice the bike want to jerk forward and backwards.

I'd rather be a bit rich than a bit lean.

SteveL · May 7th, 2009, 12:43 AM

My fuel injected 250R average consumption which includes running at 70 + mph is never less than 60 mpg, put your finger in the exhaust and see if it comes out black.

Steve

kkim · May 7th, 2009, 01:22 AM

http://faq.ninja250.org/wiki/How_to_...e_your_jetting

May 6th, 2009, 04:43 PM	#1
ahskeetz ninjette.org member Name: Wen Location: State College PA Join Date: Mar 2009 Motorcycle(s): 2008 250r Posts: 39	Rich or Lean? Hey everyone, I've had my bike on 3 washers for a couple months now, and it feels good, but it smells really rich. I have the snorkel pulled and a full AP exhaust. I rode a stock 250 the other day and it feels pretty fast actually, maybe even faster than my bike!!! Maybe it's because i usually ride my bike in the lower rpm range in the city bc its so loud.. and with the quiet stock exhaust , i was more willing to bring it to it's power range . anyhow, i was wondering if anyone knows how to tell if the bike is too rich or too lean? I was contemplating taking off 1 washer, so there's only 2 washers and then seeing how hard it pulled.. what do you guys think? __________________________________________________ 2008 250r: AP CF full exhaust, raised needles, 6000k HIDs, flush mounts turn signals, custom fender chop

May 6th, 2009, 04:50 PM	#3
ahskeetz ninjette.org member Name: Wen Location: State College PA Join Date: Mar 2009 Motorcycle(s): 2008 250r Posts: 39	Well my gas mileage is typically 46mpg or so, but on long highway trips i get about 41 mpg, probably a sign its running rich. what do you mean by "surging"? __________________________________________________ 2008 250r: AP CF full exhaust, raised needles, 6000k HIDs, flush mounts turn signals, custom fender chop

May 7th, 2009, 12:43 AM	#5
SteveL old git Name: Steve Location: Geneve Switzerland Join Date: Mar 2009 Motorcycle(s): BMW K1300S Posts: 479	My fuel injected 250R average consumption which includes running at 70 + mph is never less than 60 mpg, put your finger in the exhaust and see if it comes out black. Steve __________________________________________________ Some mistakes are too much fun to make only once.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Rich or Lean	eulark	1986 - 2007 Ninja 250R Tech Talk	6	May 11th, 2014 06:48 PM
Lean or Rich?	xaple	2008 - 2012 Ninja 250R Tech Talk	50	April 14th, 2013 04:01 PM
lean or rich condition	vmax	2008 - 2012 Ninja 250R Tech Talk	4	December 23rd, 2012 09:20 AM
lean/rich test	Confuzshuz	2008 - 2012 Ninja 250R Tech Talk	4	August 26th, 2012 09:30 PM
Too rich or too lean	rich3389	1986 - 2007 Ninja 250R Tech Talk	19	May 1st, 2012 10:32 AM

May 6th, 2009, 04:47 PM	#2
TnNinjaGirl Ms. Personality Name: CB Location: Murvill, TN Join Date: Jan 2009 Motorcycle(s): Depends on the week you ask Posts: A lot.	What is your fuel mileage? There are several ways to tell if your bike is rich or lean, but the most certain way has to do with you checking the plugs. If your fuel mileage is decent you are probably fine. If you are getting insanely good mileage, lean, if bad mileage, rich. Usually if you are too rich you will bog down. Don't get this confused with starving for gas if it is too lean. When it is lean you may feel it start to surge as you easily roll through low, mid and high range of the carb settings. Most likely you have everything set pretty close to right. If you feel like experimenting you probably won't hurt anything so it's worth a shot.

May 6th, 2009, 04:53 PM	#4
TnNinjaGirl Ms. Personality Name: CB Location: Murvill, TN Join Date: Jan 2009 Motorcycle(s): Depends on the week you ask Posts: A lot.	Sounds a tad rich. It's kind of hard to explain, but if you slowly roll the throttle or keep it in one place you will notice the bike want to jerk forward and backwards. I'd rather be a bit rich than a bit lean.

May 7th, 2009, 01:22 AM	#6
kkim Join Date: Nov 2008 Posts: Too much.	http://faq.ninja250.org/wiki/How_to_...e_your_jetting