24-08-13, 10:03 AM
Another vote for the airfilter being the cause. Easy to identify just try a run with it out, if its ok replace it with a k and n.
I had an issue with mine when I bought it, it would bog down and stutter at full throttle from around 6 to 8k. I changed the plugs and fuel filter, cleaned and balanced the carbs, and trimmed the ht leads which stopped the stutter but it still bogged down, removed the airfilter and it ran perfect, and still does with a k and n.
When I bought the Bike the air filter had been replaced, but it was some cheap paper element eBay jobbie.
I had an issue with mine when I bought it, it would bog down and stutter at full throttle from around 6 to 8k. I changed the plugs and fuel filter, cleaned and balanced the carbs, and trimmed the ht leads which stopped the stutter but it still bogged down, removed the airfilter and it ran perfect, and still does with a k and n.
When I bought the Bike the air filter had been replaced, but it was some cheap paper element eBay jobbie.