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Thread: 09 xb12xt: 30mpg avg, dies 3-5 times at startup. oil pump vacuum... etc

  1. #11
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    What color is the exhaust smoke?

    could be the IAC; heres a link to the DDFI3

    http://lightning.prohosting.com/~buells2t/ddfi.htm

    2008-up;

    New Timing System
    The timer cover is eliminated, as the engine is now crank timed from a new crank position sensor, which eliminates the need for manual timing, reducing maintenance costs. The ECM actively monitors and adjusts timing based on driving environment. The new sensor makes 30 reads per revolution, compared to the previous two reads per revolution, for more precise control of fuel mapping and timing to conditions.

    New DDFI 3 ECM (Engine Control Module)
    A new ECM with increased computing capacity. DDFI 3 actively controls and monitors the TPS (throttle position sensor), IAC (idle air control), and timing. DDFI 3 automatically zeros the TPS and adjusts fuel metering for smoother idle, eliminating service intervals and reducing the cost of ownership. A new progressive throttle cam and new throttle cables provide smoother throttle input from stops, and less rotation to full throttle.

    a 'throttle position low' code
    -thats usually from a race tuner application


    -higher output oil pumps/crank driven, could cause this vacuum. note the lower oil level checks,possibly irradiant idling.

  2. #12
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    btw ur oil pump is a gerotor type. one pump spins inside another, plus running off the crank i would assume it could lead to a vacuum issue.

    check ur ckp sensor; crank position sensor

  3. #13
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    Hi I have exactly the same problem with UK bike if I start first thing in the morning and it is happen every time, OSTERSKA did you manage to fix startup issue?

  4. #14
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    I too have an 09 XB12XT, bought it in Jan, same problem, have been experiencing an unusually cold and long winter here in TX, temps in the teens at night at one point to the 30's. The problem was fouled plugs, they fouled on the cold, 124 mile ride home from the dealer, went to ride two weeks later and did what yours is doing. Cleaned the plugs and went riding, oil is also too thick, warranty will be void if we go 10W-40 so I added some marvel Mystery oil to the oil and Sea Foam to the fuel to help keep plugs clean. Just turned over 1K and did the break in service, thick goo both eng. and trans, latter being worse, primary chain needed abt. 1/4" slack taken up. Don't go for short rides, do the plug cleaning strategy outlined in a SB prior to first engine start. The bike runs very rich and still manages to run hot, hence the sooty plugs - rear in particular! The fan runs less now as it is breaking in, I intend to do break in service again at 2500 for good measure then switch to Amsoil synthetic. Give me a call 409-886-2412 for more details, my Suzuki did the same yrs. ago but not quite as bad, it uses 10W instead of 20W, I intend to use 10W after warranty is out for winter.

    John

  5. #15
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    Oh, "Spark Plug Cleaning Strategy Reminder" from dealer SB: This is to clear residual fuel from the combustion chamber if a flooded engine or fouled spark plugs are suspected. Be sure motorcycle is in Neutral, Run/Stop switch and ignition switch off. Twist open throttle to wide open and hold, turn Run/Stop switch to Run, then turn on ignition switch. This will fire the spark plugs for approximately 4 seconds, burning any residual fuel and clear the plugs.
    Had some pretty impressive backfires! I now do this prior to initial engine start, may have to repeat a few times, I also did the breather re-route, venting overboard, helped off idle response and lessened fouling somewhat, still too rich, intend to install K&N filter and fab my own exhaust. I also plan on installing a dual CHT gauge to monitor temps on both jugs. (aircraftspruce.com, Micro 1000 dual CHT )

  6. #16
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    @ jmcamy: thanks for the info. The dealer doesn't think its the plugs, but I will certainly check. When I asked about getting new plugs, they said not to (not to go oem). Thanks again.

    @valet: that sucks. I am going to call customer care and see what they can do for me. I plan to leave the bike with the dealer until they can ELIMINATE the problem. It is unacceptable that their product almost dumps me around the first corner when the thing stalls in the morning. I will PM you when they have a concrete solution for us. The dealership has to follow whatever corporate HD says to do for repairs, and the dealer said that it would be better for me (a customer) to call so they can start trying new avenues.

    Anyway, I love my uly with to death, but am a bit dissappointed in the product. Will keep y'all posted.

  7. #17
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    :) I have sold my now........reliff:p

  8. #18
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    Update:

    Talked to HD Cust Service or whatever. They were interested in helping, but never emailed me as promised. Apparently, they called the dealer, though. About 8-9 days after I called them, my dealer called asking if the problem persisted. I said yes, but if it is not threatening to the life of the engine, I would just as soon ride the bike through my spring break. After which, I plan on leaving the bike with them until it no longer does this. So, long story short, there is no real update! I will certainly post when a result is achieved!

  9. #19
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    Okay, got the bike back from the dealer about a week ago. They did a tps reset and they reset my AFV. This seemed to solve the problem, however after a few days it still has the same issues. I wonder if it happens after the ECM relearns or something?

    I told them I did not want the bike back until it was running properly. Sooo...

    I will be taking it back in and calling HD Cust Care again sometime next week hopefully.

    Another update will be forthcoming, but don't hold your breath folks. ...I am so sick of HD dealerships...

  10. #20
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    Okay guys:

    This is getting quite frustrating.

    After my 4th flat rear tire in 10 months, and 6-8 months of this BS starting issue, I had my machine in to get the flat repaired and the starting issue resolved FOR ONCE AND FOR ALL. After talking with tech services (or whoever they call for tech advice) Rocky called me back with this information:

    Tech services says that the starting issue is a result of the vacuum in the oil pump and that as far as they are concerned, it is not an issue.

    UNACCEPTABLE.

    That a fuel injected engine takes more than one or two tries to start is unacceptable. That a fuel injected engine take 5 tries to start is SIMPLY RIDICULOUS. That my motorcycle will die and almost drop me as I round a corner or die when stopped at a stoplight (unless I clutch it and keep on the throttle) is U-N-S-A-F-E.

    If they had advertised the motorcycle as having this condition upon purchase, sure, let me deal with it. But I bought it new, brand new. I am so frustrated, I could type for pages. But I won't.

    Tomorrow I will be calling HD Customer Care, demanding a new motorcycle, and calling my lawyer if there is any hint of non-compliance on their part. Nothing like a strongly-worded letter from a lawyer to grease the wheels these days, no?

    Any advice from people who have requested/gotten their motorcycle switched for a new (I'd almost prefer a 2007 at this point) motorcycle would be helpful. I will keep you posted.



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