Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 999 / 749 > Wont start

[Bionicle]

Originally Posted by smilo006

Relays? if so how to check and which one
???

Im no expert and i expect someone with more knowledge will be along but you can try switching the relays around.

Another problem could be immobilizer

[hawkati]

i had this a couple of years ago - turned out to be a wire from previous owners alarm (removed) that hadn;t been sealed. Corroded back to to the main wiring and the alarm was wired into the killswitch circuit. Well worth checking and also look at the large round connector block just inside the frame neaxt to the cam cover?

[smilo006]

no immobiliser fitted

[skidlids]

smilo which model is you have as this section covers 748 to 998 and those two have completely different ECUs and can suffer from different problems.

I would start by checking for a spark and if fuel was getting through, easy if you know what your doing not so easy if you don't.
If its cranking over and you have no reason to suspect the ignition/spark then a few drops of fuel down the inlets can often help, if it starts then its the fuel not getting through the injectors for one reason or another.

[smilo006]

999s engine....04/05
Thanks for that.

to check the spart, plug out and start it with the plug against the cylinder head, correct?

If the fuel is getting through wont you see the injectors spraying fuel into the inlets with the tank partially removed? Or is it too fine for that.

I think a list to add to the site would be in order after this.

[Cobbett]

Originally Posted by smilo006

999s engine....04/05

Wrong section then fella. This is 748 to 998. For a 999 you want to post here:

http://www.ducatisportingclub.com/forumdisplay.php?f=84

[antonye]

Thread now moved to the 999/749 section.