New Moto Guzzi Door Mats Available Now
I don't know about the III, but the earlier 1TB versions were particularly sensitive to the engine oil level. The specified 2 litres was too much - it overflowed into the airbox, contaminated the air filter and coated the insides of the manifold and throttle body with oil. A disaster in bumper to bumper traffic in hot summers days. Spluttering, variable revs, all sorts of bad running. Solution was to clean up the oil in the airbox & the manifold with paper towels, replace the air filter with new, the spark plugs with new as well, and fill the engine with only 1.9L. Re-set the ECU by removing the battery's negative terminal for, say, 10 minutes, then re-attach.It would also be an idea to check if you have the latest factory map, at least.
You would either need a dealer to tell you what map is in there and if it was currrent...Or, get Guzzi Diag and associated cables and use your laptop. You would still need to know what the current version is and compare it to yours. However, if you go this route, then you can install a Beetle Map. As I mentioned earlier, if you think it might be a fueling issue, I would consider installing the Beetle Map. Lots of info on Guzzi Diag on this board. The fueling across the RPM range is spot on.DISCLAIMER: I do not know if fueling is your issue, but if you suspect that...John Henry
I have a 2017 V7 iii racer. I could be wrong, but I don't think there are different versions of maps for these from Moto Guzzi. I've only heard of 1 map.And stock, original map, runs great.Did your bike used to run OK in these conditions and then got worse and worse? Or did you not do this much city riding until now? So the issue might have been around for some time and you just never experienced it?Maybe it is the fuel filter? Unfortunately replacing that is a pain ... it is inside the tank, a bit tricky to get out, replace, and put back in ... there is a video here: https://www.youtube.com/watch?v=VnQX2n9YH2s
Ahhh, then I'd leave the map alone. I'd bet fuel filter. If you put in a new fuel filter you could also empty out out the tank and be 100% sure it wasn't bad gas. Another idea, but less likely, is fuel injectors clogged or not working well. Not sure of your mechanic skills, but there are ways to check/clean fuel injectors yourself. Here is the semi fancy tool way of cleaning one (dirt bike focus, but same idea): https://www.youtube.com/watch?v=5LS9_MQWzd0 . Here is cheap way to do it: https://www.youtube.com/watch?v=96sl1lnYyGo . And you might find a local shop that cleans injectors so you could just drop them off and have someone else clean them and check the spray pattern.