| Author | Message | ||
     Mikexlr650 |
when i remove my airbox cover(xb12) and look into the the intake manifold with the throttle held open i can see two little pools of oil on each side? normal? we checked hammers xb9 and it did not have any oil puddles in the intake manifold?? i realize the breathers "fog" the airbox, but it seems like quite a bit of oil. | ||
| Mikexlr650 |
another thing, after two years of riding my front header pipe "suddenly" turned blue on last weekends ride(has always been gold, same as the rear)? started popping at idle as well. any ideas. we reset the tps and idle speed, did not help. tps also will not hold a constant value. when set at 5.5 it will vary the value quite a bit, idle speed varies as well, hangs at 2krpm occasionally(hammer can explain better). it seems the front cylinder is suddenly running hotter than the rear? one idea was a cracked intake manifold. ??? | ||
| Firebolteric_ma |
Could be a leak in the manifold also, have you taken anything apart lately? Since you can not check the A/F ratio on vdsts (i Think). You may want to try to reset of the A/F ratio w/ the VDSTS. I would think that if you had a leak the ecm would attempt to rectify the A/F value by changing your Fuel cells in the map. It may be worth the phone call to Al as he is very knowledgable and a great guy to deal with. | ||
| Mikexlr650 |
not sure which software hammer has. will try that wednesday night if possible. why would it suddenly go out? | ||
| Firebolteric_ma |
well It would not "just go out" I am sure it took some time and slowly worked it's way to this point. The ecm is constantly changing the map up and down a certain percentage. Once you get a leak or something out of wack it tries to correct the problem by either adding/removing fuel in the map. This is the ecm "trying" to keep your A/F ratio at 100%. I am no pro at this and am still learning but from my understanding this is how it works Hammer does have the VDSTS so he should have no problem doing this for you. Keep in mind that if there is a problem it will return. resetting the A/F will only correct it for a short time. You are best to find the problem BEFORE resetting this. I could be all wrong here also as I am not a mechanic...more like a parts changer. But I have delt with AL at A.S.B before and he is VERY good at figuring these problems out quickly and you will without a doubt learn something talking to him (I ALWAYS do). He may ask a couple of questions and be able to point you in the right direction also. VERY helpful in these situations. | ||
| Diablobrian |
your o2 sensor only reads and reacts to rear cylinder mixture. Anything that changes on the front cylinder will go unchecked by the ECM. | ||
| Firebolteric_ma |
if there was a problem w/ rear cylender, and the ecm tries to correct it by changing that mixture in the rear, i believe it would "scale" the entire map wouldn't it? By scaling the rear to be correct, this would effect the front also due to the scale and would not be able to fix it as there is no 02 sensor there. Technicly the ecm thinks all is good as it corrected the rear to acceptable read outs, but the front would be way off then. maybe????  | ||
| Cycleaddict |
are you running too much oil ? twins generally will "puke" oil if you run too much. this may be the motors way of telling you to run a lower oil level. (maybe 1/2 way down the the dipstick)? be sure to check the oil "hot" after letting it sit about 5 minutes. | ||
| Cgocifer |
Hmmm, sounds like the cylinder could be running a bit lean. Popping and bluing could be an indication of excessive cylinder temperatures; however, my pipes are both blue as are many Buell's. One easy way to check your air/fuel mix condition is to pull the plugs and look at them. A lean condition will show as a bright white surface and possible melting of the electrode. A rich condition would show as a black, carbon covered electrode area. A good condition would show up as a light brown, almond colored electrode. | ||
| Jkhawaii |
I think thats normal for our bikes to have oil in the manifold... as the oil is being spat out from the breathers right into the intake. I ran some air intake cleaner through the intake and now its clean again. the back of the intake valves were kind of gummy to, looked at them with a small mirror and a flash light. | ||
| Mikexlr650 |
i agree the blueing is normal for many buells it's the sudden change thats got me. the pipes are hand polished and have stayed a nice gold color for some time, then last week on an easy ride the front one suddenly goes blue? sudden change in a mechanical thing, hmm. cracked intake manifold, exhaust valve not sealing?? | ||
| Mikexlr650 |
gotta pull the plugs. i remember reading somewhere how plug color is not as strong as indicator as it once was due to "modern" fuels?? | ||
| Hammer71 |
After resetting his TPS and AFV all seems fine.... Then after running for a minute or so the bike takes on it's own mind. TPS voltage jumps around from 5.5-5.8 (normal reading) to 7,8 and 9 then bottoms out to around 4. Was unable to check for any leaks at the time and the Oil in the stack seemed to be excessive (not in the airbox but in the throttle body itself (must be cleaned). The TPS issue is what has me stumped here any ideas before we run his bike off a clif and make him get a 1098? HMMM | ||
| Firebolteric_ma |
Ummm...Errr...Toss the bike, get the 1098!!!!  I would Check for a leak in the trottle body,(forget what you spray...wd-40???) Just guessing but the TPS may be off due to the oil in the T-body??? Mucking up the sensor???? May even be the sensor??? would the eng. temp sensor cause this? engine gets to hot and spews oil out the discharge tube, messing up the sensors etc...?/? | ||
| Swordsman |
Mike, my Ss used to have oil in the air box ALL the time. Some bikes tend to generate more of the crank case oil "sludge" than others, and with the stock setup, the crankcase vent feeds directly into the airbox, so this stuff is getting blown in there all the time. I finally rerouted my vent hoses to a catch can, cleaned all the oily junk out of my air intake, and haven't had any more accumulation since. ~SM | ||
| Cycleaddict |
or you could just lower your oil level. | ||
| Hammer71 |
His post seems to be misleading people. The oil mist in the intake isnt the real issue. The issue is what I posted above but the other concern was just how much oil was collecting IN the throttle body not the little black pan that the fiter sits on. I'm leaning toward a bad TPS or air control sensor. | ||
| Jkhawaii |
the oil from the breathers on my bike go right into the throttle body with out even touching the base pan. I know this because the top filter cover has a thin film of oil on it leading into the throttle body | ||
| Firebolteric_ma |
How Did you guys make out on the bike????? | ||
| Fulgur |
Just a thought from what I am hearing but if you have excessive oil in the bottom of the intake (is there much all the way down – I didn’t read any of that though). The bike will not hold a stable idle and the front pot is showing signs of running lean. Maybe a valve oil seal is damaged and leaking. Also check that your TPS is secure and not loose. …..Fulgur. |
