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Buell Forum » 1125R Superbike Board » Archive through April 02, 2012 » Lean misfire ? « Previous Next »

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Stlrdn
Posted on Saturday, March 03, 2012 - 11:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

ok the dealer has put my bike back to stock, they still cant find the problem. when i had the slip on and racing ecm (for that pipe) at 5-6000 rpm there was a nasty poping sound. it felt almost like some one was pushing the bike backwards, they blamed the mods i had done, so they put it back to stock and there is still a hesitation there! not as bad but still there.

its not throwing any codes. ive had the fuel pump replaced and fuel rail sensor! now they are trying to tell me that its a glich in the bike!
i dont buy that!
ive heard of another bike doing something like what mine is doing, but his was throwing codes! it was injector problems! they checked my injectors and said they were in range. could it be 02 sensors?
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Stlrdn
Posted on Saturday, March 03, 2012 - 11:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

the tech told me it sounded like as lean misfire! but why would it do that just at the 5-6000 rpm? would an aprilla dealer know more about these engines than the hd dealers? my bike has been at the dealers since october! i just want my money back, if i knew then what i know now, i would never have bought the thing!
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Punisher1125r
Posted on Sunday, March 04, 2012 - 12:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Might sound dumb but what kind of gas are you using and what grade?
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Kickstand76
Posted on Sunday, March 04, 2012 - 01:22 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i feel your pain stlrdn. we all do.
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Avalaugh
Posted on Sunday, March 04, 2012 - 05:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What year bike is it ? My guess is injectors.

Do yourself a favour, send them away to be cleaned/tested or if you have the early type upgrade to the later ones.

Sounds like the issue I had awhile ago, A few others have had it too

http://badweatherbikers.com/buell/messages/290431/ 659598.html?1322304043
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Redcrrider
Posted on Sunday, March 04, 2012 - 05:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Unplug the 02's and test ride it. It will run off the base map.
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Dannybuell
Posted on Sunday, March 04, 2012 - 11:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Guaranteed Problem: Staying in a relationship that continuously fails.

I have 16,000 miles on my CR, warranty took care of stator and clutch leak. The bike seems very trouble free at this time.
Knock on wood. :-)
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Lampo
Posted on Sunday, March 04, 2012 - 11:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If the plugs and coils are good, I also would suspect an injector. Bench testing flow and spray pattern does not always prove them to be OK. They may work fine at ambient temperature but falter at an elevated temperature (operating temp). If the miss is less or gone when cold and the symptoms appear only after the bike is fully warmed up this may be the case.
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Stlrdn
Posted on Sunday, March 04, 2012 - 02:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

the bike is an 09 cr,i use the highest octane they have. the only thing its bin called for is the stator harness, i havent noticed the clutch leak and i dont want to! my warrenty was up in november so im pretty much screwed! it does it wether the bike is warm or cold! i only have 6000 kms on it! i think its going in the classifies this week! thanks guys for your help!
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Two_seasons
Posted on Monday, March 05, 2012 - 03:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Make sure your battery is up to snuff.
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Cycledoc59
Posted on Monday, March 05, 2012 - 08:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It's too lean, not much noticed by
most riders with the stock systems,
but very obvious and worse when the exhaust/etc are changed.

Install an EJK and unplug the
O2 sensors. You'll be happy.
http://www.electronicjetkit.com/
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Firemanjim
Posted on Tuesday, March 06, 2012 - 03:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Or get it on a dyno and see what the air/fuel is doing at that place in rpm.
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Oldog
Posted on Tuesday, March 06, 2012 - 04:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

In my experience most add on gadgets don't work well with buell's fuel injection systems
Beside a user adjustable ECM is available for purchase from EBR, removing o2' input from system is IMO asking for trouble unless your bike is a track bike....

get a manual and spend some time reading or
Take FMJ's advice get the bike on a dyno and Find out what is actually happening

(Message edited by oldog on March 06, 2012)
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Redcrrider
Posted on Tuesday, March 06, 2012 - 06:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

O2's are just an emissions device. I'm sure the only time the EBR ecm is using the narrow band o2's is during closed loop operation. Has anyone seen the AFV's change with the race ecm?

When they first started adding fuel injection to sport bikes, many didn't use 02 sensors.

(Message edited by redcrrider on March 06, 2012)
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Craigsmoney
Posted on Wednesday, March 07, 2012 - 01:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have a CR, and when I did my valve adjustment, I found the front spark plug hole was full of water. I would check that, if it is, get a new coil and reseal the opening some how. Any help on that would be helpful. I was just thinking silicone.

Grab a manual and if you don't, find an independent shop to help you, it will be cheaper. And I think Bombardier has been running Rotax for years, they may beable to help you.
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Oldog
Posted on Wednesday, March 07, 2012 - 10:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

When they first started adding fuel injection to sport bikes, many didn't use 02 sensors.
True, but they had other sensors and the systems did not work as well}
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Stlrdn
Posted on Wednesday, March 07, 2012 - 12:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

thanks guys. but i think its time to deal it! its bin the shop for 7 months now and i need something that is a little more reliable, ive talked to a few guys with private shop and they dont want to touch it!
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Dannybuell
Posted on Wednesday, March 07, 2012 - 01:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

sounds like you are married to a stupid dealer.
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Boogiman1981
Posted on Thursday, March 08, 2012 - 10:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

armchair quarterbacking sucks but sound like injectors off the cuff but i would also suggest checking/replacing the spark plugs as well. keep in mind that when you swap ecm's that it takes a while for it to 'learn'

AFAIK the ebr ecm does not utilize the 02 sensors on this bike but could be wrong on that. either way it'd be a good idea to check/replace them as well.

in any case changing to many things without actually diagnosing the real issue will only ever lead to frustration.

there are several riders here that have had issues with plugged up injectors.may have been a bad batch of fuel that caused it who knows but in any case don't give up these bikes area complete hoot and normally pretty dang reliable
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Captjoe
Posted on Thursday, March 08, 2012 - 01:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Give the guys out at Rocky's HD in London Ont a call and ask them about it. Around southern Ontario, they seem to know the bike the best in my opinion.
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Avalaugh
Posted on Thursday, March 08, 2012 - 03:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I don't think it's bad fuel, really wish I had taken a picture of the crap that came out of my tank/frame when I had it off.

I think there is some kind of liquid liner process that goes on, or possibly from casting. But either which way it leaves a hard almost plastic type resign inside, however it's also brittle, I had huge triangular chunks that had obviously come unstuck from the corner recesses of the tank, along with loads of small and even tiny pieces.

I removed fuel pump too, the filter was covered in it. So my guess is the smallest particles were getting through it and blocking the injectors.

I left some of this resign in a bowl of injector cleaner for a fortnight and it wasn't effected !!!
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Avalaugh
Posted on Thursday, March 08, 2012 - 03:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If only we could speak with an engineer who made the frames to find out exact process it goes through
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Stlrdn
Posted on Thursday, March 08, 2012 - 06:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

well the warrenty ran out in november, my bike has been at the shop since october so it is still on the work order from october so if i take it some place else ill have to pay. dont get me wrong i love this bike. i rode gsxr for years and it didnt even compare to the fun ive had on this bike! but i called harley davidson of canada yesterday, hes gonna see what they can come up with. they know about the stator problems to which i havent had yet!
i have new 02 sensors coming for the bike, we will see what happens!
my bike hasnt run right for the two years that ive had it! the first day i got it, it stalled on me a couple of times, i put the pipe on with stock ecm, thats when the popping started and a nasty hessitation at 4000 rpm. so i put it back to stock until i could afford the ecm!
it still had the hesitation but not as bad!
then the preprogramable ecm came out and i got that, the popping was there again. so now its stock again,
i dont like quiet bikes! if people cant see me! i want them to hear me! sorry bout the story, but im a little flustard at this moment, its getting warmer out and i have no ride! hopefully hd of canada can do something for me!
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Stlrdn
Posted on Wednesday, March 28, 2012 - 03:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i just called hd of canada again today! bout an hour after that the bike shop called and said there is a possible recall on the crankshaft sensor! now why would that not show up on the scan? and would this cause all the problems ive been having?
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Firemanjim
Posted on Wednesday, March 28, 2012 - 03:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Get it on a dyno so you can run it at the rpm with the problem and see if the air fuel is off.
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Stlrdn
Posted on Wednesday, March 28, 2012 - 04:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

if i ever get it back ill try that! im just waiting to hear from the shop now!
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Rogue_biker
Posted on Wednesday, March 28, 2012 - 04:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Sounds like you dealer doesn’t know exactly what they are doing and are just sitting on the bike and waiting for a flash of brilliance. Seems like what they should do is go through the process of elimination and do this FASTER. If the popping occurs exactly at around a certain RPM it can’t be in intermittent, electrical gremlin. So maybe it is indeed crankshaft sensor or camshaft position sensor? Why don’t they just replace it and see what happens? I’ll bet if they had single competent mechanic in there it would be resolved in one day, not months!

Disconnecting the O2 sensor won’t do anything. All those do is send exhaust gas readings to the ECM so the ECM can lean out the mixture to a Stoichiometric level to reduce emissions. That only happens at low small loads/small throttle openings. If the popping existed before the EBR ECM/Exhaust install the problem existed already.

It sounds to me like the bike only has ONE issue that hasn’t been resolved.
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Stlrdn
Posted on Wednesday, March 28, 2012 - 05:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

they keep telling me they have spent to much time on it now! i dont care how much time theyve spent on it! i just want it fixed! and yes they already told they dont know enough about it!
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Rogue_biker
Posted on Wednesday, March 28, 2012 - 05:42 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I realized long ago, after bitter experience with both Japanese and Buell service, that I can do a far better job servicing my bike. The last time I had my local H-D dealer work on my Firebolt for a simple TPS reset, it was the last time. They screwed that up too! The last time I took my Japanese bike to a dealer, they screwed up putting new clutch/brake fluid—spilled it on my windshield, rerouted the hydraulic line wrong, oh and they really messed up on my cam chain tensioner replacement for my Hayabusa resulting in burned up valve seals. NEVER AGAIN!
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Stlrdn
Posted on Wednesday, March 28, 2012 - 06:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i dont have all the toys too work on this bike! my gixer was fairly easy to work on, not as much electronic crap on it! i wish this bike was carbbed, it woud be a hell of alot easier to figure out! i found another recall for the buell but i dont know when it was released or if it even affects my bike! my is at the shop so i cant figure out when exactly it was built!
the recall is for rear cylinder cam tensioner!
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Rogue_biker
Posted on Wednesday, March 28, 2012 - 07:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Never heard of that recall.

The 1125R is not as complex as the bikes coming out now with throttle by wire, multi-mode power, etc. Many of BMW's models now even come with cockpit adjustable suspension!

Once bikes went to fuel injection with electronic control and closed loop emissions monitoring, all the simplicity of carbs went out the door. All bikes are now like that--filled with sensors.

Having said that, once you understand how the system monitors everything and what sensor does what, they become easy to diagnose. Much of the 1125R is still mechanical. You can easily say, the 1125R and bikes in this generation are the last of the "mechanically connected" bikes. Most bikes now are connected by wires. Soon brakes will be brake-by-wire. Transmissions will be electronically controlled. Suspension will be electronically adjusted and controlled.
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