On a 1000+mile trip to Scotland in November the bike was running fine during nearly all of the trip. On the way back I refuelled at motorway services then proceeded at slightly illegal speeds down the M74 motorway. After about 4 miles the bike lost power- it felt like it was running on 2-3 cylinders gradually losing speed on a constant throttle. I pulled onto the hard shoulder where the engine started running fine again. After another 10 miles or so at the same speeds the same thing happened again and once again rectified itself once I pulled in and let it idle for a minute or two. I carried on the journey at around 50-60 mph and when near home increased speed to previous slightly illegal speeds (ok, 90ish+ mph).
Anyway the problem didn't reoccur. Road conditions were good with no rain. Since then the bike has been in my garage for general strip down and swing arm repaint.
I've given it a full service - plugs, air filter(s) etc changed the fuel filter and checked electrical connections. The tank is clean as a whistle inside and I have checked the breather pipes and blown out with air. As it's all going back together now I'd be really grateful of any suggestions to the possible cause and anything I've missed and should check whilst all the plastic is off. Thank you and Happy Christmas/ Seasonal greetings to all.
Anyway the problem didn't reoccur. Road conditions were good with no rain. Since then the bike has been in my garage for general strip down and swing arm repaint.
I've given it a full service - plugs, air filter(s) etc changed the fuel filter and checked electrical connections. The tank is clean as a whistle inside and I have checked the breather pipes and blown out with air. As it's all going back together now I'd be really grateful of any suggestions to the possible cause and anything I've missed and should check whilst all the plastic is off. Thank you and Happy Christmas/ Seasonal greetings to all.