| Author | Message | ||
     Pikeben08 |
Most of the Buell cough threads that I've seen have been for the carburated models. But every once and while I get a cough on my X1. I didn't too think much of it since it happened so sporadically (once every 1,000 miles maybe) but it happened 3 three times on the way into work this morning. Always seems to be at steady state around 3200 rpm. Anyone else have this issue? What could cause it? PCV oil flowing down the intake and over the injector, blocking fuel and causing a misfire? I guess maybe it's time to get an ECMspy cable. | ||
| Psykick_machanik |
I doubt the pcv would do that. A dirty injector popped into my head first. Id try some injector cleaner. If that doesnt work id check for an intake leak around the throttle body. | ||
| Natexlh1000 |
Mine has always done that too. I never solved it. Still hasn't blown up. Seems to only do it on the highway on long trips. Like the bike is getting bored of the superslab. Seems to be related to the open loop/closed loop/learning cycle. Mine does it with both the loud pipe and also the stock pipe. | ||
| Two_seasons |
Have had it happen on my '99 X1. Right about 3200rpm too. Reset TPS several times (make sure you have yours at FULL operating temp before you do the reset). Never happened on my '00 X1. '99 has Vance & Hines SS2R, Forcewinder, and race ECM. '00, all stock. It's been my contention that the problem exists, like Nate suggests above, in the fuel maps during the transition from closed loop to open loop mode. There's only one problem with this, 3200rpm is firmly in the closed loop mode. Transition is at around 3800rpm iirc. Here is what Loose1 did that seemed to clear up this issue for my '99 X1. Loose1 added fuel at midrange rpm's and it hasn't happened since. I'm not sure previous owner did/did not do any ECM re-maps! Two options Ben. Either ride over here Saturday and we'll re-map it together on Sunday morning and get you back on the highway, or get ECMspy and the cable and do it yourself. I can copy and paste the fuel maps when I get a chance. | ||
| Natexlh1000 |
My 2000 has roughly the same setup as your 1999. "Daytona Boss" muffler, forcewinder, race ECU. When mine hiccups, it misses then the muffler goes "BANG!". Scares the crap out of anyone I happen to be riding with at the time. So it seems like it's pumping gas/air mix into the exhaust unburnt and then having the followup ignition light it off. When it was new, I was certain that it was going to die and did my utmost to document the many times I brought it in to the shop to fix it. The various shops threw boxes of parts at it to shut me up but it continued to do it past the extended warranty period.  Altering the map was not an option back when it was new  | ||
| Kalali |
Without ECMSpy there is not much you can do. If it happens at 3200 RPM all the time, all you need to do is change the fuel amount in those cells until it goes away. Contrary to intuition its the lean condition that is causing the backfire. | ||
| Pikeben08 |
Thanks for the info guys. I'm a calibration engineer by trade, so I've been wanting to get a cable anyway. @two_seasons, I think wi is a bit far for me to just cruise over, but thanks for the offer. |
