I currently own a 1982 GS550L which has been problematic for a number of months now. Let me explain:
Starting is ok, but after a while the idle is a bit lumpy. When I ride it on the road, the main problem occurs: - when I accelerate from stop up through the gears, I get to around 75-80 mph and I can?t accelerate any faster. At this speed the engine becomes very jumpy and sounds like it is misfiring slightly. If I release the throttle at all at this point, there is a flat spot and I am unable to accelerate again. In most cases I have to pull over to the side of the road and switch the bike off and on again. (It will die out anyway). Also, I fitted a pair of universal straight thru slash cut silencers last autumn which I think may have contributed to this problem. The problem was occurring before this time. It is really annoying and means that I can?t really ride over the speed of 65 mph before this problem kicks in! Another occurance of this problem is when climbing a long gradient over a mile or two. Even if I keep a constant 60 ? 65 mph, after a few minutes, the same old problem happens ? a flat spot and wanting to die out. Any ideas would be gratefully appreciated.
Brendan
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