Pages: [1] 2  All   Go Down
Print

Topic: 2012 FJR1300A is running rich  (Read 11002 times)

0 Members and 1 Guest are viewing this topic.
Blue is Best
Light is right
*

Reputation 252
Offline Offline

Motorcycles: 2012 FJR1300 & 2016 Bandit 1250
GPS: Rio Rancho, NM
Miles Typed: 2331

My Photo Gallery


Blue motorcycles are fastest




Ignore
« on: July 30, 2019, 10:07:51 am »

My bike has begun to run rich. Gas mileage around town and running errands is way down. Running on the road, cruising at travel speed(75 mph +) is OK but down about 5%. The last big run I took it on a couple of months ago was an eye opener. At 10,000 feet elevation the thing blubbered!! Not good. But I still got good hwy mpg.

I think it is the oxygen(O2) sensor. No code on the instrument panel but the sensors can get "slow" or inaccurate before they die. That condition would not trigger a code. I think mine is at the point getting ready to die.

Odd because I don't hear of FJRs going through these sensors. The bad news is Mr. Yamaha wants WAY too much money for a sensor. Heck, car sensors can be had for pocket change but not Yamaha!!
Logged

Past bikes: Dirt- '74 MX360, SC500 x 2, '77 YZ400, '78 YZ400, '83 CR250, '85 CR250, '86 CR250   
 Street- '74 S3400, H1500, '72 H2750 x 2, '78 GS1000C, GS1000EC x 2, '80 GS1000S, '00 1200 Bandit, '05 FJR1300, '07 ZX14, '06 FJR1300(2 wks), '12 FJR1300
Sport-Touring
Advertisement
*


Remove Advertisements

SLK50
Junior Member
*

Reputation 44
Offline Offline

Motorcycles: '06 FJR
GPS: Altoona, PA
Miles Typed: 1272

My Photo Gallery




Ignore
« Reply #1 on: July 30, 2019, 11:56:11 am »

Have you checked the air filter?
Logged
Blue is Best
Light is right
*

Reputation 252
Offline Offline

Motorcycles: 2012 FJR1300 & 2016 Bandit 1250
GPS: Rio Rancho, NM
Miles Typed: 2331

My Photo Gallery


Blue motorcycles are fastest




Ignore
« Reply #2 on: July 30, 2019, 12:24:31 pm »


Have you checked the air filter?


Oh yeah. First thing is to always check simple things first.
Logged

Past bikes: Dirt- '74 MX360, SC500 x 2, '77 YZ400, '78 YZ400, '83 CR250, '85 CR250, '86 CR250   
 Street- '74 S3400, H1500, '72 H2750 x 2, '78 GS1000C, GS1000EC x 2, '80 GS1000S, '00 1200 Bandit, '05 FJR1300, '07 ZX14, '06 FJR1300(2 wks), '12 FJR1300
Advertisement



jay547
Junior Member
*

Reputation 255
Offline Offline

Years Supported: '11
Motorcycles: 2015 Yamaha FJ-09, 2019 Honda CRF450L, 2002 Honda CR250, 1973 Yamaha AT-3
GPS: Northeastern, OK
Miles Typed: 3015

My Photo Gallery





Ignore
« Reply #3 on: July 30, 2019, 01:16:17 pm »

Rider error?   Razz
Logged

It's not the fall that hurts, it's when you hit the ground.
greench440
Stay Thirsty My Friends
*

Reputation 18
Offline Offline

Motorcycles: 05 FJR, 91 ZX-11 - SOLD!
GPS: Covington WA
Miles Typed: 3498

My Photo Gallery


What we have here is failure to communicate




Ignore
« Reply #4 on: July 30, 2019, 01:42:54 pm »

Are you using a Power Commander?  if so, are you using it in Open loop (disconnected o2 sensor).

If you're not, your gas mileage should go up as you go up in altitude.  the FI system sensors should dial back the amount of fuel because there are fewer O2 atoms in a given volume.  

I'd check the o2 sensor first.

Chances are the sensor is probably used in a multitude of other motor cycles and cars.  See if you can find a part number interchange.
Logged

ATGATT - All the Garbage all the time
Blue is Best
Light is right
*

Reputation 252
Offline Offline

Motorcycles: 2012 FJR1300 & 2016 Bandit 1250
GPS: Rio Rancho, NM
Miles Typed: 2331

My Photo Gallery


Blue motorcycles are fastest




Ignore
« Reply #5 on: July 30, 2019, 02:20:12 pm »


Rider error?   Razz


I got you on my list now.
Logged

Past bikes: Dirt- '74 MX360, SC500 x 2, '77 YZ400, '78 YZ400, '83 CR250, '85 CR250, '86 CR250   
 Street- '74 S3400, H1500, '72 H2750 x 2, '78 GS1000C, GS1000EC x 2, '80 GS1000S, '00 1200 Bandit, '05 FJR1300, '07 ZX14, '06 FJR1300(2 wks), '12 FJR1300
Blue is Best
Light is right
*

Reputation 252
Offline Offline

Motorcycles: 2012 FJR1300 & 2016 Bandit 1250
GPS: Rio Rancho, NM
Miles Typed: 2331

My Photo Gallery


Blue motorcycles are fastest




Ignore
« Reply #6 on: July 30, 2019, 02:21:30 pm »


Are you using a Power Commander?  if so, are you using it in Open loop (disconnected o2 sensor).

If you're not, your gas mileage should go up as you go up in altitude.  the FI system sensors should dial back the amount of fuel because there are fewer O2 atoms in a given volume.  

I'd check the o2 sensor first.

Chances are the sensor is probably used in a multitude of other motor cycles and cars.  See if you can find a part number interchange.


No power commander.


As I posted originally, I believe it to be the sensor.
Logged

Past bikes: Dirt- '74 MX360, SC500 x 2, '77 YZ400, '78 YZ400, '83 CR250, '85 CR250, '86 CR250   
 Street- '74 S3400, H1500, '72 H2750 x 2, '78 GS1000C, GS1000EC x 2, '80 GS1000S, '00 1200 Bandit, '05 FJR1300, '07 ZX14, '06 FJR1300(2 wks), '12 FJR1300
Blue is Best
Light is right
*

Reputation 252
Offline Offline

Motorcycles: 2012 FJR1300 & 2016 Bandit 1250
GPS: Rio Rancho, NM
Miles Typed: 2331

My Photo Gallery


Blue motorcycles are fastest




Ignore
« Reply #7 on: July 30, 2019, 02:31:55 pm »

My current issue is trying to find a sensor that is interchangeable with the Yamaha sensor. Yamaha wants over $200    for a sensor that is made by Denso. There has to be a sensor out there that costs the going rate of $40 to $60.
Logged

Past bikes: Dirt- '74 MX360, SC500 x 2, '77 YZ400, '78 YZ400, '83 CR250, '85 CR250, '86 CR250   
 Street- '74 S3400, H1500, '72 H2750 x 2, '78 GS1000C, GS1000EC x 2, '80 GS1000S, '00 1200 Bandit, '05 FJR1300, '07 ZX14, '06 FJR1300(2 wks), '12 FJR1300
greench440
Stay Thirsty My Friends
*

Reputation 18
Offline Offline

Motorcycles: 05 FJR, 91 ZX-11 - SOLD!
GPS: Covington WA
Miles Typed: 3498

My Photo Gallery


What we have here is failure to communicate




Ignore
« Reply #8 on: July 30, 2019, 02:52:00 pm »

http://densoautoparts.com/find-my-part.aspx
Logged

ATGATT - All the Garbage all the time
Blue is Best
Light is right
*

Reputation 252
Offline Offline

Motorcycles: 2012 FJR1300 & 2016 Bandit 1250
GPS: Rio Rancho, NM
Miles Typed: 2331

My Photo Gallery


Blue motorcycles are fastest




Ignore
« Reply #9 on: July 30, 2019, 08:42:36 pm »



I've tried that site. I even talked to a Denso guy and he tried the Yamaha part number and he tried the Denso number stamped on the sensor I pulled off the bike no luck. I think Yamaha signed some deal with Denso to make them but not sell them.       Shrug


I'm trying to determine if a Bosch(the inventor of oxygen sensors in the 70s) number will convert.        Sad        I just don't want to pay over $200 for a $50 part!!!!!!!!!!
Logged

Past bikes: Dirt- '74 MX360, SC500 x 2, '77 YZ400, '78 YZ400, '83 CR250, '85 CR250, '86 CR250   
 Street- '74 S3400, H1500, '72 H2750 x 2, '78 GS1000C, GS1000EC x 2, '80 GS1000S, '00 1200 Bandit, '05 FJR1300, '07 ZX14, '06 FJR1300(2 wks), '12 FJR1300
HanksXXX
*

Reputation 3
Offline Offline

Motorcycles: 2007 ZX-14, 2000 Turbo Bandit
GPS: Augusta NJ
Miles Typed: 258

My Photo Gallery




Ignore
« Reply #10 on: July 30, 2019, 08:51:37 pm »

Honda Blackbirds run rich and have fuel mileage problems when their Fuel Pressure Regulator shits the bed.
No knowledge of FJR's but its a thought.
Logged
Blue is Best
Light is right
*

Reputation 252
Offline Offline

Motorcycles: 2012 FJR1300 & 2016 Bandit 1250
GPS: Rio Rancho, NM
Miles Typed: 2331

My Photo Gallery


Blue motorcycles are fastest




Ignore
« Reply #11 on: July 31, 2019, 10:04:41 am »


Honda Blackbirds run rich and have fuel mileage problems when their Fuel Pressure Regulator shits the bed.
No knowledge of FJR's but its a thought.


That's interesting. I hadn't thought of that. I will do some checking on the regulator in the system.      Thumbsup
Logged

Past bikes: Dirt- '74 MX360, SC500 x 2, '77 YZ400, '78 YZ400, '83 CR250, '85 CR250, '86 CR250   
 Street- '74 S3400, H1500, '72 H2750 x 2, '78 GS1000C, GS1000EC x 2, '80 GS1000S, '00 1200 Bandit, '05 FJR1300, '07 ZX14, '06 FJR1300(2 wks), '12 FJR1300
greench440
Stay Thirsty My Friends
*

Reputation 18
Offline Offline

Motorcycles: 05 FJR, 91 ZX-11 - SOLD!
GPS: Covington WA
Miles Typed: 3498

My Photo Gallery


What we have here is failure to communicate




Ignore
« Reply #12 on: July 31, 2019, 10:14:34 am »

Have you tried FJRForum.com?
Logged

ATGATT - All the Garbage all the time
Blue is Best
Light is right
*

Reputation 252
Offline Offline

Motorcycles: 2012 FJR1300 & 2016 Bandit 1250
GPS: Rio Rancho, NM
Miles Typed: 2331

My Photo Gallery


Blue motorcycles are fastest




Ignore
« Reply #13 on: August 04, 2019, 09:59:54 pm »

Green- Thanks for the website. After some reading, it appears that the FJR1300's O2 sensor doesn't come into play until after 2,000 or more RPM and when fully warmed up. At startup the bike runs on a different map. At low RPMs is where I am experiencing the terrible richness. Must be some other sensor that is not within proper specs but not completely inoperable so no code. I will keep reading/studying before I start buying things.

 
Logged

Past bikes: Dirt- '74 MX360, SC500 x 2, '77 YZ400, '78 YZ400, '83 CR250, '85 CR250, '86 CR250   
 Street- '74 S3400, H1500, '72 H2750 x 2, '78 GS1000C, GS1000EC x 2, '80 GS1000S, '00 1200 Bandit, '05 FJR1300, '07 ZX14, '06 FJR1300(2 wks), '12 FJR1300
Blue is Best
Light is right
*

Reputation 252
Offline Offline

Motorcycles: 2012 FJR1300 & 2016 Bandit 1250
GPS: Rio Rancho, NM
Miles Typed: 2331

My Photo Gallery


Blue motorcycles are fastest




Ignore
« Reply #14 on: August 26, 2019, 02:07:35 pm »

Been riding the bike and letting the Bandit 1250 have a rest. When I went up to Creede, CO it got 51.4 mpg and on the way back 54.6 mpg.    Headscratch      I have ruled out the O2 sensor. It is something related to the "bottom end" of the rpm range fueling.

Green's idea of the other FJR forum is one that I think I will try. I'll sign up and post something other there about this problem and one of the gurus can push me in the right direction.

Logged

Past bikes: Dirt- '74 MX360, SC500 x 2, '77 YZ400, '78 YZ400, '83 CR250, '85 CR250, '86 CR250   
 Street- '74 S3400, H1500, '72 H2750 x 2, '78 GS1000C, GS1000EC x 2, '80 GS1000S, '00 1200 Bandit, '05 FJR1300, '07 ZX14, '06 FJR1300(2 wks), '12 FJR1300
Bounce
FJR1300
*

Reputation 92
Offline Offline

GPS: USA
Miles Typed: 1291

My Photo Gallery



WWW

Ignore
« Reply #15 on: August 27, 2019, 10:19:48 am »

When was the last time you did a throttle body synch and checked for air/vacuum leaks? Clogged air filter? Changed an intake or an exhaust without remapping it?
Logged

FJR-Tips.org

IBA #285
Blue is Best
Light is right
*

Reputation 252
Offline Offline

Motorcycles: 2012 FJR1300 & 2016 Bandit 1250
GPS: Rio Rancho, NM
Miles Typed: 2331

My Photo Gallery


Blue motorcycles are fastest




Ignore
« Reply #16 on: August 27, 2019, 02:43:21 pm »


When was the last time you did a throttle body synch and checked for air/vacuum leaks? Clogged air filter? Changed an intake or an exhaust without remapping it?


Good questions.


TB synch- Never        Not to my credit for sure. But, that wouldn't cause the problem I have.

Vacuum leaks- I am going to do that in the next few days along with some other ideas I have. BTW, vacuum leak would make it run leaner!!

Air filter- Checked it before last ride. Didn't need to but ordered a new one anyway.

Exh/intake change- On my new 2005 FJR I modified the air box and installed the same Muzzy 4-1 exhaust that is on the 2012 that has begun giving me the rich bottom end problem. I modified the airbox as on the 2005. The intake and exhaust changes to BOTH bikes caused me to loose 1-2 mpg. They still ran fine and got 50+ mpg. No need for an ECU reprogram or other black magic box.

As I posted in other places, a couple years ago when the 2012 was running like it should I drag raced my best riding buddy, Steve, on his newer generation 2013 FJR1300. From a 2nd gear roll on at about 4,000 rpms he jumped me a couple lengths and as the rpms came up I caught him as we shifted to 3rd and then I left him for dead. He was astounded at the HP of my older generation FJR from the mods.


Something has gone South or some wire is jacked up to make my bike run rich on the bottom but OK when I'm cruising. I call 50+ mpg now OK.



Logged

Past bikes: Dirt- '74 MX360, SC500 x 2, '77 YZ400, '78 YZ400, '83 CR250, '85 CR250, '86 CR250   
 Street- '74 S3400, H1500, '72 H2750 x 2, '78 GS1000C, GS1000EC x 2, '80 GS1000S, '00 1200 Bandit, '05 FJR1300, '07 ZX14, '06 FJR1300(2 wks), '12 FJR1300
Baz
*

Reputation 22
Offline Offline

Years Contributed: '07, '08, '09, '10
Years Supported: '11, '12
Motorcycles: Yamaha FJR
GPS: St. Albert, AB, Canada
Miles Typed: 9019

My Photo Gallery





Ignore
« Reply #17 on: August 29, 2019, 06:11:26 pm »

I just had to replace the cylinder head on my 2006. I had a disastrous event occur on a valve check. To make a long story short, a improper installation of the valve cover gasket caused the gasket to get wrapped up in the timing chain, causing it to skip and well lets just say I ended up with 16 bent valves.

So on removal of the head I found two cylinders that had been burning rich (heavier carbon build up on the two in question. (I am running a PC III on mine.) The problem never relayed to the bike running rough, and I always sync the throttle bodies when I have it apart.

I located a used head in Pennsylvania with 18,000 miles on it. (My FJR has about 80,000 km or 50,000 miles on it). Oddly enough the used head  I received had the same carbon buildup on two cylinders (although different ones).

This issue never did present itself as making the bike run poorly or did it show up on any plug inspections, nor did I ever notice any black buildup on the exhaust pipes.  I also have run mine at high altitudes.

All I can point my issue to is throttle bodies out of sync.


Oh, by the way, r&r the engine from an fjr is best left to those with excellent puzzle solving skills, and small Japanese hands.

This little mess cost me around 400 bucks in parts, and about 6 weeks of riding season (which is a good deal of riding season here!)

Note Cylinder 1&4 have heavier carbon build up in exhaust ports.




 
« Last Edit: August 29, 2019, 06:33:51 pm by Baz » Logged
Blue is Best
Light is right
*

Reputation 252
Offline Offline

Motorcycles: 2012 FJR1300 & 2016 Bandit 1250
GPS: Rio Rancho, NM
Miles Typed: 2331

My Photo Gallery


Blue motorcycles are fastest




Ignore
« Reply #18 on: August 29, 2019, 06:48:25 pm »

WOW! Too bad. Sorry to hear about that.           Sad
Logged

Past bikes: Dirt- '74 MX360, SC500 x 2, '77 YZ400, '78 YZ400, '83 CR250, '85 CR250, '86 CR250   
 Street- '74 S3400, H1500, '72 H2750 x 2, '78 GS1000C, GS1000EC x 2, '80 GS1000S, '00 1200 Bandit, '05 FJR1300, '07 ZX14, '06 FJR1300(2 wks), '12 FJR1300
Baz
*

Reputation 22
Offline Offline

Years Contributed: '07, '08, '09, '10
Years Supported: '11, '12
Motorcycles: Yamaha FJR
GPS: St. Albert, AB, Canada
Miles Typed: 9019

My Photo Gallery





Ignore
« Reply #19 on: August 30, 2019, 09:00:24 pm »

The more I think about your issue, I would think C02 sensor.

I cant believe a stock FJR can run rich! (Hence why I bought the PC III)
Logged
Pages: [1] 2  All   Go Up
Print
Jump to:  



ST.N

Copyright © 2001 - 2013 Sport-Touring.Net.
All rights reserved.

 
SimplePortal 2.3.1 © 2008-2009, SimplePortal