A question for those with a greater knowledge of engines than mine (that'll be everyone then). While riding, with no particular reason, my VFR will sometimes start to lose power. The best way to describe it would be as if you had quickly taken your hand off the gas and it had started engine braking. This would last about a second or so, then accelerate again, slow down again, etc. It would happen about 5 or 6 times in a row. The engine RPM doesn't seem to be affected but the speed drops. My first thought was the clutch slipping, but I've done only 17,202Ks so far on it and the oil levels are fine. It seems to be an entirely random event. It has happened twice. There is nothing I can do to replicate it at will. It started yesterday while I was riding from Homebush to the Northern Beaches and was quite sight on Forestway with a bunny hopping VFR. I've never mono'd it and haven't run it harsh throughout all its life so I can't think of any cause for mechanical problem, and would be very surprised if the clutch was worn out already. The only thing out of the ordinary that I have done are: A) Put the suspension 1 notch firmer. Used a petrol station (Shell on Parramatta road just past Flemington while heading toward Parramatta, quite an old looking station). I did make sure I had the right (standard unleaded) fuel and not E10 or anything like that (They were separately labelled). I only use standard unleaded and have used Shell VPower once a few months ago. As I said, I never usually go to this station. I have done 220Ks on this tank with 2 blocks left on the dial. This station I have spoken to Sydney City Motorcycles and they reckon it's the fuel mapping and the guy on the phone said he'd heard of it being a common problem with the VFR VTEC engine. I've booked it in for its 18,000K service on monday. Has anyone out there, VFR rider or not, heard of a problem like this? Any ideas are most welcome. I have a feeling it's related to the fuel, there is no other explanation I can think of for it suddenly developing. Thanks.