just been for a shake down ride on my 749, got home and the silencer was loose so I propped the rear of the tank up to remove the seat unit , tightened up the silencer (appears to have a bush missing ) put it back together and she won't start ! Pump primes but when I press the button it turns and primes for about 1 sec at a time but doesn't fully turn the engine over any ideas please ???
If it only started playing up after raising the tank , there may be an electrical problem with the tank wiring / connectors . There's another member here having fuel pump issues . This thread might give you some tips ..... or at least a starting point .... https://www.ducatiforum.co.uk/threads/916-fuel-pump-doesn’t-stop-priming.79536/
If it doesn't turn the engine properly I imagine your battery is weak. I would measure the voltage as is and while trying to crank. Anything below 12 while cranking isn't good enough.
Update .... I put the battery on charge this morning for 3 or 4 hours then went for a very short ride , the bike started up as normal ....... just been in the garage to sort out the tyres on my Street triple so thought I'd put the Duke on charge just yo see , and its charging like it was flat ! (Using an optimate 4 ) can't think what I could have done to run the battery down , its less than 6 months old , could leaving it with the parking light on drain a battery in a short length of time??
How long was it left unused. 6 months will drain it, potentially knacker it. I also find that these smart chargers aren't very good to charge a near empty battery. Good to keep them conditioned but to really charge a empty battery I use a old dumb big current battery charger. As to can the parking lights drain the battery. Front and rear parking lights are 10W or so. Divided by 12 V is 0.83 amp drain. So a 10 Ah battery would last 12 hours before it's completely flat.
