I have a Multistrada 1200dvt that is behaving very badly and wondered if you can help. I had the bike serviced with new belts and valve clearances, also all fluids. This was at Moto magnet in penrose auckland approx8 weeks ago. Since then, 1, it won't idle when cold, it starts up and idles for a few secs, then changes to idling very lumpy and then stalls. If you try using throttle while this is happening it gets very rough and coughs and spits. It will do this approx 4 times before it is warm enough to idle properly and then it is fine. 2, when accelerating it starts coughing and bucking if you give it mid-full throttle below 4000rpm. In fact the more throttle you give it at that point, the less power it makes and sounds like only one cyl is firing. Above 4k and exactly as 4k gets highlighted on the tach, it runs fine with full power. I cannot say that this is their fault as it could be coincidental and they have been great in relooking at it. Ramon the owner comes highly recommended and seems stressed out about this one... It has been back at the bike shop for 6weeks and in that time, they took it to ducati hamilton who put it on their diagnostic where it had a bunch of historic fault codes which they cleared. None of which came back when the bike was then run. The engine check light has not come on while I have had the bike. When I took it for a service it had a freeflowing Delkivic exhaust system with a cat delete and. Ducee. exaust valve eliminator. Also a K&N filter. This setup had been on the bike at least 8000km with no issues. The bike shop have told me they think this is the main issue, that I need to change it all back to stock. I have refitted the full std exhaust and exaust valve but it is still exactly the same. My avionics trained brother without even hesitating said, "this is a sensor issue" but the thing is bristling with sensors and I am abit of a points and carbs kinda guy really and it is doing my head in. So I am left not knowing which type of hammer to use and where to smash it! Any ideas anyone?
Belt timing is critical on the DVT motor. If the crank is rotated with the belts off, then the only way you'll get it back is with the correct timing tools. Get it wrong, even a tooth out and there's a chance of hitting a valve. I'd start with checking cam timing and a compression check.
He should be stressed. If it went in fine and came out not fine, then imho, they have to take responsibility. The modified exhaust valve is the perfect get-out clause though :/ Take note of Nelly, he knows what he is talking about.
I tend to think that too although the diagnostic said that was good? Yep, that has been checked agin since fitting. They have all the correct setting stuff. I am pretty sure this is not a mechanical problem. The mechanic is left totally scratching his head. Also, if it was cam timing, it would probably run badly all the time? I was hoping when it went back to the shop they would find something obvious and easy to fix, but no, six weeks later and I am left with a badly running machine that I am going to have to fix myself or sell as a part runner...
A silly question but seeing as this has 2 plugs per cylinder, is one fired from the coil on plug in the centre of the cylinder head and the second plug on the outer cylinder has a separate coil pack mounted on the left hand side of the frame, have they been cross wired so that one is actually firing on the wrong cycle/cylinder. It's just a a thought but it could be upsetting the O2 sensor and the stepper motor cannot control the unburnt fuel and also stalling issue.
Good point Peter, I have no idea, and no way of testing it and the more scenarios I run past my mechanic, the less he is talking to me. Like now, he is not returning my emails. I am absolutely stuck with this machine. My only two options now seem to be a, sell it as a faulty runner, or b, take it to yet another ducati dealer and see if they can fix it. Really starting to get to me...
You’d be better off getting it fixed at a Ducati franchise dealer IMO they may be more expensive than a non-franchise mechanic but at least you know you’ll get it fixed. I would have thought if you sell it as is you’ll end up selling it at a discount to FMV that far exceeds the cost of fixing it as any purchaser will want a big discount for the risk. As a suggestion could it be overfueling on start up and up to 4K rpm? It may just be coincidence this started after the service or it may be something in the electrical connection feeding the injectors and controlling the fuel/air mix was dislodged or not properly reconnected, or needs cleaning with contact cleaner.
The mechanic would appear to have buggered it up, he needs to fix it. It's desperately unfair that you should be considering selling the bike as a no-runner under the circumstances. What about his personal pride in his work and his professional reputation?? If he's a Ducati specialist, surely he doesn't want this story getting round the local Ducati owners?? He should be keen to get it sorted. If he's not and he's willing to leave you in the lurch, then maybe he deserves to be named and shamed...
Yes it is running rich, I have researched the bejesus out of this to try and find if this has happened to someone else but no, I seem to have not much precedent...problem is now the sheer amount of sensors and the work required to remove, replace and check all the wiring. So I am trying to narrow it down considerably.... Although I agree with you in principle, he has been very upfront and honest about everything and also there is a chance that it is just coincidental. Would be helpful if he would return my emails though... So after spending a heap of money on getting a service I am now looking at spending a heap of money to get my bike running properly, I just cannot do it myself. Things that have been have ruled out, Battery and battery leads, earth etc. Fuel or tank related pump and filter Spark plugs Exhaust flap valve Air filter Thanks guys for your input, I really appreciate it.
Air temperature sensor on the snorkel, is it clear? has the rubber boot been put on correctly? this would throw the fuelling out
The Ducati tech tried swapping the iat sensor with a known good one and said it make the bike run differently for a little while but then it reverted to it's current condition. So he didn't say it fixed the issue, he said ran differently. Kinda cryptic really? He swapped it back to original and said it then made no difference.
He could have trapped a pipe leading to the rear one, it has quite a kink in it already and has a short run to it's sensor
Yes he did ride it, on the motorway and he gave it some. But he told me it was running perfectly so I was only expecting the cold start idle issue. But no, it still has the running issue and it seems unlikely that it was running 100% when he rode it, he just must have been over 4k rpm is the only thing I can put it down to. And yes, the MAP sensor thing, I have tried to check the hoses as best I can but the front cyl one is very hard to get to as is everything inside the airbox...
So after a bit of fossicking about it appears there is no tps reset procedure for the DVT, just the usual replacement type stuff.
Oh, ok, funny I have found no reference to it other than some guy in the states having to do a scarily expensive throttle body replacement. I have emailed to ask the closest Ducati service centre who havent responded yet.... Thanks Peter!
The DVT is a different animal to the previous models. Most of the internet stuff is irrelevant as it's based on pre DVT bikes with "assumptions" being made. The TPS can be reset, but it's very rarely required unless throttle bodies etc. have been changed. The injection system calibrates itself at key on. The RBW system is very different to previous bikes.
