749 Not Getting Full Power.

Discussion in 'Technical Help' started by Pavey, Apr 15, 2014.

  1. That's what it feels like. My engine management light came on this morning on the M1 just before Brent Cross and i crawled all the way to Kensington.
    Went out again during the day and it 'cleared' and the bike lurched forward, as if it was normal again. On the way home the light came on again, and i can only describe it as a feeling the bike is being restricted. The sound its outputting is different too, while in limp mode. The engine sounds much louder, almost like something is going to come firing out of the side.
    I'm not a mechanic, but clutching at straws that it could be not enough fuel getting through, spark plugs need changing, or could it be something more sinister? Could it be the belts need changing, think i am about due?

    Thanks for any help.
     
  2. If the EOBD light is still illuminated, press the left switch on the dash whilst switching the ignition on. Make a note of the EFI codes displayed and post here.
     
  3. Have you got the bike wet recently, maybe washed it?

    Could very well be the front cylinder not firing which is a well know problem as water can easily get into the front cylinder's plug recess, or coil pack which would result in the symptoms you have described.
     
  4. Thanks guys - i never knew that about finding the fault code. It's saying 10.2.

    I googled and the Ducati.ms forum came up with this - 10.2 Hor. Coil shorted to earth
     
  5. As said above. If you have an air line give the horizontal plug recess a blast of air. Then a liberal dose of water dispersant spray in the recess and the coil stick. Also consider replacing the coil/injector/fuel pump relay.
     
  6. I bought some GT85 for my mtb at the weekend. A squirt of that into the front spark plug may do it?
     
  7. Correct me if I'm wrong Chris, but I'm sure that that's the fault code generated by a malfunctioning coil/injector fuel pump relay?

    Pavey, if you have access to an air line, do as Chris suggested and blow out the plug recess after you have removed the coil pack ( very simple to do: undo the 10mm nut that holds the coil pack in position and pull off)

    If you don't have access to an air line, (like me), use a thin stick such as a coffee stirrer with some cloth and push it in the plug hole and clean and dry any dampness from there. Give the coil pack a good clean and dry and spray with your GT85.
     
  8. Thank you both, will try that now.
     
  9. 10.1 and 10.2 are the coil stick error codes

    749/999 error codes - Ducati Up North

    But as we all know, that bloody relay can cause no end of errors.

    I would replace it now as it will no doubt be covered in Verdi Gris.
     
  10. I did the trick with the cloth, dried the coil stick, put it all back together. Turned the ignition and the light is still there.

    Is there a chance using the bike could dry it out? Need to get to work tomorrow, and don't fancy public transport :)
     
  11. Have used the bike all last week, and yesterday and all was fine. Odd it's now displaying that fault, as we have had no rain nor have i washed it.

    Just had thought. Could look really foolish here....

    A minute before the light came on this morning on the M1 i was cruising along, bright blue sky and loads of water started running up my visor. Wiped it and it was on the inside (definitely wasn't from my nose). Has had me baffled all day.

    Could it be related?
     
  12. There is a chance that the coil stick itself is saturated with water. You can take the coil stick apart to clean and dry it out, but make sure that you don't loose the spring that serves to conduct the HT to the tip of the spark plug!

    Failing that , it's probably the relay as Chris had already mentioned. It's a bugger to get to though as Ducati hides it in a very inaccessible place under the aluminum heat shield on the lower L.H.S of the battery box.

    Not a quick job I'm afraid.
     
  13. "A minute before the light came on this morning on the M1 i was cruising along, bright blue sky and loads of water started running up my visor. Wiped it and it was on the inside (definitely wasn't from my nose). Has had me baffled all day.

    Could it be related?"

    WTF! I'm baffled too!
     
  14. Lol. Maybe it was my nose.

    Thanks for that link John.

    Thanks for all your help John and Chris, i'll have a look in the morning, and no doubt end up on the London Underground.

    Cheers.
     
  15. Changed (and relocated) the relay, my 10.2 error code has now gone. I do however get the EOBD now and again, and an error 34 on the dash, and it won't start.

    Going to run the lead to the starter motor bolt tomorrow (think i had none in the wrong place) and change the plugs and see if that helps it.
     
  16. 34.0 relates to the barometric sensor that is built into the dash. You will find that this fault may clear itself. Some have had success by taking the dash apart and cleaning the circuit board with a contact cleaner spray.

    As for the non- starting. Do you mean it does or doesn't turn over?
     
  17. It doesn't turn over.
     
  18. Basics first. Stop switch, bike in neutral, battery charged etc

    Retrace your steps when you did the relay. Did you disconnect the HT cable to the starter? Have you pulled the small earth lead that connects to the ECU body and broken it?

    It's difficult diagnosing remotely.
     
Do Not Sell My Personal Information