Basically i have a 996 with 25000 miles on the clock. I have onyl had it a couple of weeks but i recently rode it from UK to Germany and ever since it has done something funny. Basically if you blip the throttle it sometimes stalls and there is an almost suction type noise. At the same time you can feel the throttle being pulled shut. It is fine at higher revs although on a neutral throttle it is all over the place. I have checked the throttle cable and idle speed but they are fine. Any suggestions? I will try and get a video of the noise and actions.
the thing is ducati twins have... well 2 pistons, that are relatively large with a lot of space between firing strokes. Compared to a 4 cylinder that has 4 x smaller pistons that fire much closer together. The bottom line is the fuelling particularly when you open the throttle, ie dump a large amount of air into the cylinders, ie blip the throttle, it need to be at good fuelling or it will stall......! I think a good dealer or dyno place will sort the fuelling out for you....
Cheers, that sounds like a good idea. The bike has Termis and a chip of some soret in the back with a Ducati Doctors sticker on it so it has been set up properly at some point. It didn't do it when i bought it though that suggests something has slipped or failed???
it could of course be an electrical fault too something breaking down under load.....how old is it? Have you had the alternator nut torque checked....?
as above - sounds like you or someone needs to go through all the basic checks and settings for a kick-off. Is it hesitating around mid-range on hard acceleration or popping on the overrun? Oil light/temp gauge working ok and behaving normally?
Itcoughs under hard accerleration every now and then but there is no popping on the overrun. I think it just needs a tune up
Re: 'cough' - this bit is controversial but there is a belief that unless your engine and systems are in absolutely tip-top condition, then you have one injector too many on a standard 996 which CAN produce symptom as above. At the time when 996 was flooding the streets a company was convinced enough to produce a chip to enable the disabling of one injector. A specialist or two with more information will probably be along soon to add more info. The 996SPS got it right by utilising two injectors per pot working sequentially but 'ours' cannot be made to work in this way with ease.
It is what they do! My 996 ST4S did it even when it had just been serviced by MD Racing and Pro-Twins. It doesn't happen every time but the induction tug is often noticeable on the throttle.
Brad knows what he's talking about :- At this point some of you are probably screaming about the bikes running lean. Well, the new ST4S, the 996 powered ST4, runs a single injector per cylinder. The same injector as the 916, and one half of the 996 pair. Which is probably Ducati’s way of saying something. And don’t think the ST4S is a lesser 996 either. With a new inlet cam that shuts the valves about 10 degrees earlier ( another factory confirmation of something we have known for a while, and also fitted to the Monster S4 ), this is claimed to be MORE powerful @ 117 Hp than the 996 STRADA engine @ 112 Hp. The 996 dual injector setup has more to do with SBK homologation rules than what the bike actually needs I now suspect.
Thanks guys, as long as there is not a problem i will live with it. I hvae had 2 SP1s and a Firestorm so i am more than used to rather rough running engines when not on full chat. It is all part of the Ducati character that sets it apart from the likes of the 5 GSXRs i have owned :wink: lol
so, am I right in summarising as follows: it could be an electrical problem it could be a setup issue it could be about to spit it's dummy they all do that sir ??? RUNNING!
as we are having a stir here rather than helping, are you sure it's not the lack of pressurised cooling here Jerry? :wink:
