Hello all. I went to start my bike one day last July and it wouldn’t start ( it had been running perfectly the days before ) It cranked over fine. I had previously seen an invoice in the paperwork from a couple of years before, from Ducati Cambridge saying “ Investigate why lights go out when hot - Suspect Generator is faulty “ I replaced the voltage regulator, but it still won’t start. ( I have bought a new Generator, but not fitted it yet ) I’ve fitted new spark plugs. There is a good spark at the plugs and with a squirt of Easy Start into the left intake below the headlight, it very briefly fires. The bike has a Power Commander fitted, could this be faulty ? Also, I’ve checked the fuel pump, it primes when the ignition is switched on. I’ve taken the pump out to see if a hose has come off ( il probs change the filter whilst it’s out as well ) I now have forgotten which of the 2 fuel hoses fits to which connector to the fuel tank, anyone have a photo of the pipes ? Or can anyone recommend a specialist who I could take the bike to ? I am in Chelmsford Essex Cheers
Possibly a faulty crank sensor. The pump will still prime at switch on but when the engine is cranking the relay won't switch back on, so no pump, injectors or spark.
Hello Derek, thanks for reply. Ok, I do have a spark at the plugs. Il call Ducati Cambridge to see if they can get me one.
If there are sparks it's not the crank sensor. Sounds like no injection. I'd start by disconnecting the Power Commander so you can eliminate it.
you should have "IN" and "OUT" in raised text on casting body, or are you saying you need to identify hoses?.
That doesn't identify which line is which though. Although the lie of lines might help. But as it is loop with regulator in the tank it shouldn't matter.
the manufacturer put in and out for a reason, i feel similarly that it shouldn't matter but it's always easier to follow manufacturer's protocol in the long run - why wouldn't you?
Diagrams here might help: https://www.bike-parts-ducati.com/ducati-motorcycle/Superbike/2007/1098_S/139
Exactly ! The pipe on the tank that is nearest the rear of the bike is the IN But which fuel hose is the IN one ?? The parts diagram just isn’t clear
because they meet at a one-exit junction (with no one-way valve) it confirms that it doesn't really matter which way round you connect (you will just have to place some trust on this one!) but it's clear that you just connect up each hose without them crossing over, i'm sure that's what i did. - I tried to enclose a picture but it didn't come through on here.
One some models, like the ST2 the regulator is at the throttle bodies and it does matter which way round the pipes are but with a simple loop like the 1098 it shouldn't matter. It's only the runs of the lines which may determine it.
Hello Chris, yes, I’ve no problem with the layout of the hoses over the air box, but which hose goes to the IN on the fuel pump in the fuel tank ??
I think that if you've been reading our posts above you will see that it doesn't matter. Whichever fits best with the lay of the hoses.
