carb synch problem?
hopeffully someone can give me a little direction in which way to go to solve my problem. the problem is whenever i go above 60mph or on a hard excel. the bike stumbles and mildly jerks and can't get much speed to pass. i have VH cruisers with no jetting mods. i have run sea foam thru it every 1/3 fill up. the bike is a 2000 with 14,000 miles on it and average 50-53mpg. so i guess i have 3 ways to go and need your feedback and/or past experiences.
1) sticky float or low level, so when i step on the gas i have to wait for the gas to get there thru the lines. not sure about this one though.
2) maybe because of the new pipes and less back pressure at top end, i need to rejet to get more gas in the cylinder to get it up to speed. here is no reason to rejet with cruisers but this could be the problem since it runs pretty good at moderate speeds.
3) could carbs out of synch cause this? it has 14,000 miles and i know perviuos owner never touched the carbs. he got the bike with 5,000 miles on it.
and 4) i'm totally clueless and its something entirely different.
please give me your thoughts as i have 3 months to figure this out till the snow melts. thanks in advance and keep it safe, J