Originally Posted By Rog G
Did that happened immediately after refuelling, if so the tank was overfilled just fill the fuel tank until the pump stops but then do not top off. Most of us have had that happen.


Actually, yes it did. I wrote off the initial bogging as too much overflow fuel in the canister. Had the same problem with my MotoGuzzi V7 before their check valve recall. But when the symptom persisted intermittently for, say, 60 miles, I assumed that something more sinister was afoot. I confess, topping off has been my compulsive habit for 55 yrs. Thanks, Rog G.

Originally Posted By GLLOQ
verify with Protune the occilation of the voltage of the lambda probes (0.5 V to 1.1 V approximately)

to make a reset of the ECU adapter map

sealing of the air intake system to see

I didn't try ProTune with the engine running. Thanks for the suggestion, GLLOQ. Thanks, too, for confirming that front is left. I didn't think that the ECM system would allow resetting or adjusting much other than DTC history. This is all new to me. Could you elaborate a little?


John, retired Marine Engineer
87 Morgan +8+, 12 Morgan 3W