Originally Posted By AncientMariner
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.



I have had it happen a few times and it usually clears and runs normally after a couple of miles. However one time I refuelled and left the car on a slight slope overnight. The following day the engine was difficult to start and ran rough for at least 50 miles with engine light on, I stopped and restarted again after 30 minutes, still the same, drove another 5 miles stopped for lunch, restarted and the engine light had cleared and was running smoothly again. That was about 4000 miles ago and its been fine since.


2021 M3W
2013 M3W - Sold
1971 4/4 2 Seater
1934 Sports