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2011 Norge bogs down in all gears @ 2400-3600 RPM

jeremiekenney

jeremiekenney

Just got it firing!
Joined
May 27, 2014
Messages
4
Location
South Carolina
I have a 2011 Norge (~60K mi) am having issues with and wondering I anyone has any suggestions/thoughts. I have scoured the web and Guzzi sites and I can’t seem to find someone else with the same problem and/or a possible fix.

ISSUE: engine sputters/pops/bogs down in all gears between the RPMs of ~2400-3600. This happens only once the engine is warmed up (1st 5-10 min riding typically without issue). Once I get > 3600 RPM it is like I hit a power band and runs fine again. If I stay out of those RPM ranges it runs like it always has.

TRIED REMEDIES: Took it to Vespa/Moto Guzzi shop in Marietta GA- No codes, changed fuel filter, tested compression, and charged a lot to do so without any change. With the help of my father, a retired BMW MC mechanic, we changed plugs/caps/wires, changed battery, cleaned/checked sensors (ABS, wheel speed, TPS, engine air temp). Swapped coils, checked throttle bodies, and unhooked all my wiring for things like heated gear, GPS, Trickle charger.

I am in the U.S. (Greenville, SC) and I can’t find anyone in 500 miles that will touch it. Even Guzzi shop in Texas said they would’t touch it as > 10 years old. My only thoughts left is to try a new ECU but that would be an expensive investment if it didn’t work.

I would appreciate any thoughts or guidance,

Jeremie
 
I had some weird rev issues with my Breva 1100 once. It turned out to be the 30amp fuses. You could try replacing them and cleaning the holders.
 
1. TPS Reset. This requires a specialized computer tool. Todd sells his flash tool in the store which can accomplish this task.

I bet it hasn’t been done in quite awhile.

It sounds like your fuel injection map is not in alignment with your throttle position sensor.

2. I would check the hose on the bottom of the airbox which connects to the stepper motor.

Use a flash light. From the right side, look transversely just above the injector. You'll see a 1/2" hose turn upwards to the bottom of the air box. No hose clamp is used here.

Make sure it is connected and I would also put some cleaner down the tube from within the airbox to the stepper motor as well. Use SEARCH for Steeper Motor Cleaning to read more.

3. Once you have a TPS reset, you need to check throttle body balance.

Also, I pray that nobody has messed with what is referred to as The Sacred Screw on the left side throttle body.

If that has been done, you are in a world of pain and suffering.

I wrote this for the Stelvio but the information is applicable to a Norge as well. Please read it entirely and carefully to understand the throttle plate setup and what a TPS reset is actually doing and why.

www.guzzitech.com

Syncing Throttle Bodies- Stelvio 8V

thanks John. Maybe I can find someone with the equipment willing to help me do it here in Austin TX area. Ultimately I'll end up buying the gear. My bike has only 2800 miles so it go awhile just fine. Seems to vibrate like a Harley at idle, and remain a little rough until really smoothing...
www.guzzitech.com www.guzzitech.com

If all else fails, my workshop is 579 miles from you in Findlay, Ohio. I have everything necessary to get your motorcycle right as rain and I own a 2009 Norge as well.

scottsmotorcycleworkshop.com
 
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