| Author | Message | ||
     01x1buell |
my bike ois breaking up at wot between 2500 and 3000 all seals are good my afv is 109 and i have a race map in it.. this has just started i was riding to day and had this problem i shut the bike off to talk to someone and then went to go and rip on it and it ran fine again.. does anyone have any suggestions for me??? thanks | ||
| Oldog |
several possibles. water in gas crap in gas bad gas tank vent (If it continues) crap in fuel filter Oh and try not to snap the throttle open, roll it on | ||
| Oldog |
btw AFV 109 check the plugs, both should be about the same, you may have an air leak... | ||
| 01x1buell |
i have checked for an air leak and i do not have one i will check the plugs now and let you know. | ||
| 01x1buell |
ohh and rolling the throttle oin it is fine just when i snap it.. | ||
| Oldog |
you will find that they all stumble a bit doing that, I consider my X1 healthy and have never been able to do that. (snap open the throttle) I have tried it with a couple of Xb bikes they growl and complain a bit ( better FI )?? not all air leaks will show up with a leak test, the plugs can tell you a story, the ECM can only monitor the rear cylinder O2 sensor. so any time I suspect running problems I look at them, unlike My 1125 the X1 is a snap... | ||
| 01x1buell |
ok yesterday my afv was 104 now it is 109 and breaking up..  this is the front now the rear  but like i said as of yesterday everything was fine... should i add more fuel or what i am kind of nervous about adding anymore fuel since it has alot to it as is. | ||
| Oldog |
you have an issue for sure Either an air leak or a plugged injector front running rich back running lean hence the elevated AFV should i add more fuel or what i am kind of nervous about adding anymore fuel since it has alot to it as is. Adding fuel is not as bad as removing it Whats been altered? to require a change? how old are the inlet seals how old are the injector orings do the exhaust gaskets seal good?} (Message edited by oldog on July 04, 2011) | ||
| 01x1buell |
yes the inlet seals are new as of one week and the exhaust gaskets as well i do not know about the injector orings . i just took her for a small 10 min ride to look at everything again.. i will keep you posted. | ||
| 01x1buell |
ok i pulled the rear plug and checked my afv the afv is now at 95 and the plug is light brown... i rode it the same as i did earlier in the day.. the only differnce n ow is that it is not 90 outside but 80... | ||
| Oldog |
what does the front one look like if both are light brown ( good mixture ) afv is steady, perhaps ET is drifting just for S&G tomorrow evening after work, or before check the intake air temp against the engine temp bike stone cold see how close they are ... what intake and exhaust do you run | ||
| 01x1buell |
i have force winder intake and d&d slip on. might i ask why would i check the intake air temp vs the engine temp..?? | ||
| 01x1buell |
the front look the same as the pic i posted. | ||
| Jramsey |
Just curious, where do have the air intake sensor mounted? | ||
| 01x1buell |
the air intake sensor is mounted up by the fork mount by the vin on fork tube in front of the front of the front head. | ||
| Oldog |
might i ask why would i check the intake air temp vs the engine temp..?? If they are both close to each other ( temp reading ) and close to the outside air temp if there is a problem it exists else where if one or the other is "way off" there is the culprit, the engine temp failing can cause the fuel to go rich, or lean depending on failing, the air temp can effect the mixture as well, Mine is clamped to the FW inside ( motor side of the filter ) gives an accurate indication of intake air temp | ||
| Oldog |
What would concern me is that the front was over rich relative to the rear several members (long time owners) have had issues with intake seals, right after installing a new set. If the rear still runs lean check the injector orings ( on the intake side ) the injectors are just friction fits in the manifold the fuel rail holds them in place. | ||
| Jramsey |
IMO, and I may be all wet on this but I think the sensor mounted there would be great running down the road BUT if you stop for for gas/snack break being mounted there it will sense cooler temps(and think the motor is cold) and tell the ecm the engine is cool verses the residual heat retained in the stock air box. The sensor only sends what it reads and mounted differently than designed it can cause running problems. Do a search on relocated sensors, not saying its your prob' but something to think about. | ||
| 01x1buell |
ok thanks man. i qam riding it to work at 4 am so i will find out when i get home at 5 pm i will let you know.. again thanks | ||
| Oldog |
JR actually what you are saying makes perfect sense, You would have residual gasses ( warm) in the still air box the box would get hot sitting next to the motor etc. I put my IAT under the drisock on the FW filter the air tends to be hotter with this arrangement me thinks as the engine at idle picks up air wafting up off of the header pipes, when moving the inside will be about the same. the arrangement has worked well for me. | ||
| 01x1buell |
 this is where i have my air intake sensor is, just behind the middle tube | ||
| 01x1buell |
that does make sense james where do you recommend that i put the sensor??? | ||
| Snowbees |
When I had my iat sensor close to the engine the AFV was 117%, moved it to behind the headlight and it dropped to 111, its still there but have since tuned my maps. I had no problems with running with it in either position before or after my map tuning. | ||
| Kalali |
I am not sure what you mean when you say your bike is "breaking up" but in my opinion for all practical purposes your AFV value of 104-109 is just fine. If it were me I would just leave it alone. You may end up causing more damage by trying to mess around with the seals, temp sensor, etc. Your bike your choice. Based on my experience there are just too many variables in play including the inherent shift in the electronic sensor readings to get a steady 100% AFV all the time. Mine tends to vary between 99-104 without any reasonable explanation. I've also have long stretches like in weeks where it remained solid at 100%. | ||
| 01x1buell |
hey my air inlet temp is 21 and my engine temp is 15 cold i have not moved bike in two days?? | ||
| Kalali |
Well, you made me curious so I just went out and checked mine; Inlet temp is 24 and engine temp is 26. Bike's been sitting for a couple of days. Your engine temp sensor is drifting a bit too much. You can clean the connector and see if that helps. Probably not. | ||
| 01x1buell |
ok i have got the bike running good now.. both my front and rear plugs are fine not grey not black ,,now my afv is still at 110... should i leave it alone or keep messing with it?? | ||
| Two_seasons |
Replace your engine temperature sensor. I did on my '00, along with the O2 sensor, and it made a world of difference. American Sport Bike is your friend  Oh, and another thing, while you're in there, replace the intake and manifold seals too. Go to AmericanSportBike.com and they've got what you need there. By the way, I just looked at your profile...broke header stud at 10,000,000 (that is million) miles. There's your problem, you need a new engine and probably the tranny too  (Message edited by two_seasons on July 17, 2011)} (Message edited by two_seasons on July 17, 2011) | ||
| 01x1buell |
oops 10 thousand,, ohh and my front iso just went today. fun fun | ||
| 01x1buell |
the intake and manifold seals where replaced about 1000 miles ago |
