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Discussion Starter #1
I picked up my new Rivale late June and experienced issues on the way home with poor running and hunting at lower speeds. I thought it had been fixed following its 600 mile service in July with a throttle body balance but the problem persisted. It went back into the dealer for two weeks in September and had the exhaust gasket replaced but still running badly. In October it went back in for a further two weeks and had the lambda sensor changed. On the way home the bike ran dreadfully with the engine surging and unable to maintain a constant speed at anything less than 60mph. I took the bike back to the dealer on 7th November with an assurance that if it couldn't be fixed this third time they would give me a new replacement bike. After 10 days I had a call to say that everything had been checked over and no faults found however they had another bike with similar issues. They had spoken to MV who were said to be working on an updated map which may be a couple of weeks away from completion. Today I have spoken to the dealer who advised that the new map is still not ready. They have gone over the bike again and have found that the butterfly valves in the throttle body assembly are opening and closing themselves by one or two millimetres which is likely to be causing the problem. I'm no expert on fuelling but I really don't think this is a problem with the mapping or it would affect all of the same model. As things stand I've had the bike six months now and it's been at the dealers for almost 10 weeks in total, albeit with a demonstrator bike loaned to me for that period, so feeling a bit pissed off. I'm going to give the dealer one more week then I think I need to insist on a replacement or my money back. This has been my first MV and I love the bike but it has not been a good experience to date. (Feel a bit better now having got that off my chest!).
 

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Colin, I feel your pain man, been there, done that! I went over two years and the one thing I can tell you for absolute is that there is no fix all new fuel maps.
Only you know how much crap you’re willing to put up with and when enough is enough.
If you have the time and would like to know what I went through than read my thread: Happy anniversary to me, NOT!!!!
http://www.mvagusta.net/forum/showthread.php?t=107681
 

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Hi Colin,
Sorry to hear of the troubles you are having. If the throttle bodies are not functioning correctly it sounds as if you need a new RBW throttle assembly and replacement throttle bodies. Yours would not be the first one to display poor running.

Who is your dealer? Keep up the pressure on them and don't give up. Certainly as Stephen has said new map is not the remedy.

Good luck and keep us informed on progress. Certainly when your bike is fixed they are huge fun to ride.
 

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Damn its sad to read about these things :( I know this isn`t any help though. Why does it have to be so hard to make reliable and functioning bikes, its beyond me. Hope MV gets things sorted in the future.
 

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Colin, I know how you're feeling. I've had my Brutal 800 over 2 years and it would take a couple pages to tell you all the problems (Sprag, radiator, tip over sensor, surging etc.). The one thing that seemed to fix a lot of my engine problems was the sealing of the throttle bodies. I assume they did this but if they haven't, ask them to. My engine problems went away and I gained an extra 10 MPG.
 

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The TB's have three very thin rubber gaskets, when the Sprag goes bad these have to be removed to get to the cover.
When I recently done some maintenance on my bike I used a smear of silicone sealant on the TB's to ensure a good seal.
 

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Sounds Italian, so its not like they normally are, push them inside the rubber manifold and tighten? Theres something else in there too?
 

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It is a metal to metal fit with the three very thin o rings which sit in a machined groove on the intake. Secured with six or seven M6 bolts. Pretty standard type stuff nothing odd.
 

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Discussion Starter #11
Thanks for your support guys. I've had several conversations with the dealer suggesting they check the sealing of the throttle bodies and they assure me they have done that. The bike also seems to run very rich and is only averaging around 28 mpg so the low fuel light comes on between 55 and 60 miles. When I have the bike I have to plan my route around fuel stops.
 

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Have you had a new throttle? Fixed my (similar) problem. BTW I suspect we share a dealer. The bike with similar probs may well be mine....
 

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Discussion Starter #13
Well my bike has been sat in the dealers workshop for nine weeks now, that's on top of the four weeks previously. I spoke to the dealer last week and he advised that they have replaced everything including the throttle bodies and it still runs like a dog. An engineer from the factory is going to have a look at it next week and I'm told that if it can't be made to run properly they will replace the bike. If I'm honest I'm hoping they can't fix it and it get a new bike as I have lost any confidence in the bike I purchased. Hopefully by next weekend I will have some positive news.
 

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First ensure that mecanically all is in order , I meant valve play , spark plugs , etc
After only check the rest ...
 

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What was the outcome? Did they replace the whole bike? . I think that's what I would push for . Good luck .
 

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Discussion Starter #17
Latest update - the mechanical engineer came up from Hampshire on 19th January. He is British based but employed by MV Agusta to look after any issues in the UK. My dealer tells me that the guy arrived convinced that they had overlooked something simple and that it would be fixed in an hour. He left five and a half hours later without finding a solution. The throttle bodies, throttle assembly, lamda sensor and exhaust gaskets have all been replaced and all the readings on the test equipment are showing as correct but the bike still wont run properly. The engineer spent some time on the phone to the factory discussing the issues. It seems that the dealer has two Rivales with the same issues, mine and another belonging to another guy whose bike is running worse than mine. As a last resort they have ordered two new complete wiring looms and they are going to change the loom on the other guys bike first to see if it resolves the problem. If it does they will do the same on my bike, if not they will replace both bikes. Hopefully will have some sort of resolution in the next couple of weeks! It has certainly dragged on and I'm glad its the middle of winter and not summer or I would have been well cheesed off with no bike for three months.
 

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Discussion Starter #18
I had a call from the dealer today to advise that MV had drawn a blank on sorting out the poor running. I'm getting a brand new replacement bike. I had the option of getting a replacement (2014 model) straight away or waiting until 1st March for the new registration. As an alternative I could pay the difference between the cost of my old bike and the price of the 2016 model and get the newer bike with the larger fuel tank. I've opted for the new model but unfortunately it won't be delivered until April. The dealer has said I can hang onto the loan Stradale until then. It's been a long journey but at last there is light at the end of the tunnel.
 

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Glad it's worked out in the end, and the right outcome was reached.
 

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I wonder what will happen to the old bike? I guess it will go back to the factory for some serious research. I so want to know what the issue was.

Anyway I'm glad you got sorted. New one will be here in time for the decent weather. :)
 
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