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2012 Norge

Discussion in 'BNS12 Chat & Tech' started by esmurrell, Oct 6, 2013.

  1. esmurrell

    esmurrell Just got it firing!

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    I need some help. I have a relatively new 2012 Norge. I love riding the bike but have a problem. The bike appears to cough and spit from idle up to about 3,000 rpm and there is a mild backfire when holding in the clutch between shifts. I'm not sure whether this is supposed to happen or not but I suspect not. Also, I only get about 33 MPG on this bike and that is well lower than what I expect. I did have a 2007 Breva 1100 which didn't have either of these concerns hence my questions. I love the bike and expect to have it for a long time to come and would like to have these issues sorted out. Can anyone give me any advice?

    Thanks
     
  2. evo

    evo Tuned and Synch'ed

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    How new is the bike, from all reports, the factory settings on the Norge aren't all the flash. Valves, timing etc. Have you had it tuned by someone who know's what they are doing? Sorry if it sounds like I'm telling you to suck eggs. :lol:
     
  3. esmurrell

    esmurrell Just got it firing!

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    Well, I had my Norge serviced by my dealer and they report the problem was a loose header pipe. That could allow air to get sucked into the engine and cause the problems I noted on my original post. They also reported the TPS and throttle bodies were just fine. The last thing they tell me is the mileage will gradually improve, most notably after I cross 10,000 miles. While I hope it doesn't take that long to get respectable mileage, I'm back to enjoying the bike as ever before. If things move forward in a positive direction, I will make a post. Thanks for your suggestions.
     
  4. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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    It does seem the four valve head bikes drink more fuel that the two valve. Similar to when FI was first put on Guzzis, the bikes with carbs got better mileage.
     
  5. fastfreddy

    fastfreddy Tuned and Synch'ed

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    Mine is a 2011 with 15J on it now and it still pops between shifts and runs lean at lower throttle openings and gets sucky fuel mileage. So probably that's the way it is and will be.

    Fred
     
  6. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    Stock to stock, yes, but doesn't have to be. I've proven my kits work or your money back; https://www.guzzitech.com/forum/235/2686
     
  7. abbienormal

    abbienormal High Miler GT Famiglia

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    To reopen an old thread, I am awaiting the new reflash tool from Todd. My 2012 Norge ran through it's first tank of fuel with me at the controls a few days ago. I could tell it was running very lean, surging on constant throttle. The fuel mileage meter said 46.5mpg which is what I expected as my 2007 Norge got about 45-50. So when the fuel gauge plummeted from just touching the reserve line to empty in about 15 miles the total miles traveled were over 200. I figured even if I got 40mpg it would go 240 miles so I continued to the station near my house to refill. Guzzi list the capacity at 23 litres or 6 gallons. Doing the conversion 23 litres is actually 6.076 gallons. That is a good thing as I put 6.019 gallons in the bike without trying to top it off over where Guzzi says to fill it to at 213 miles for 35.39mpg. That sucks and is worse than my 1400 Tour got and one of my complaints on it was the thirst for fuel. The mpg meter on the old Norge was almost spot on. I find it hard to believe this one is that far off.
     
  8. GuzziMoto

    GuzziMoto GT Reference GT Contributor

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    I think you will like what Todd does with them. But the new 8 valve motors have some issues with the design of the heads and / or cam timing as they do get crappy mileage. I am not saying it is a bad motor design, but from an efficiency point of view the motor is a bit lacking. It does make more power, but it does so by burning a lot more fuel. And as the basic bike can be directly compared between, say, the 2 valve version and the 8 valve version it is easy to see that the 8 valve version burns more fuel to do the same amount of work.
     
  9. Bill Hagan

    Bill Hagan GT Reference GT Famiglia

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    IMHO, that is quite true, although the labels "2 valve" and "8 valve" always make me grin a bit. Not criticizing you, as Piaggio does that, but it is funny. Yes, I am easily amused. :happy:

    I just ran 1000 miles in Pennsylvania's many and grand back roads on my 2007 "2-valve" Norge, in the company of a friend on his 2012 "8-valve." Mine has 67K miles; the 8v has 45K. Both have been serviced to spec (and more).

    Moreover, he and I have similar riding styles and rode the sweet beasts "as intended," i.e., it was a good thing that Pennsylvania cops seem to be mostly on the turnpike!

    If we commuted regularly on these, mine would be the better choice, as his used at least 25% more fuel than mine.

    But we don't commute, and ride for the joy of it. Accordingly, while I am happy enough with the performance of my own Norge, the extra power of the 8v makes it, again, IMHO, the better choice ... for that and some other reasons.

    Happily, I have a 2010 "8v" Griso (in the faster color, red ;) ), so when I need a grunt fix, I roll it out of the Moto Grappa and wick it up. :D

    If it were about fuel economy -- not a bad thing, of course -- I'd drive our Honda Fit. :giggle:

    Bill
     
    MJZach likes this.
  10. old fart

    old fart Just got it firing!

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    It has been my experience that 220 miles to a tank is about it. I get 32 to 34 in town and up to 39-40 mpg on the road. I have learned not to trust the gas gauge but fill up based on miles driven. I would see if you have the latest mapping to try to improve on the running. If you haven't had the bike rollerized yet you may want to have the engine inspected. I had mine checked at 11,300 miles and it already had a lot of the coating missing from the tappets. Had it rollerized and the bike is quieter and runs great.
     
  11. GuzziMoto

    GuzziMoto GT Reference GT Contributor

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    To add to the confusion of Guzzi engine designations, I have two different 4 valve per cylinder Guzzi's as well. I have a Lario with a small block 4 valve motor and I have a Daytona with a big block 4 valve motor.
    I think the 8 valve designation was to differentiate it from the previous Daytona 4 valve motor.
     
  12. Bill Hagan

    Bill Hagan GT Reference GT Famiglia

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    Hadn't thought about that; good point.

    Bill
     

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