Need some help,with a 2004 yam. Hpdi 200. Runs good 1st thing in morning, as day goes on becomes hard to get on plane, once on plane will not go over 4500 rpms. Been in an out of shop many times for this problem. Has new fuel bulb, new plugs, new fuel filters, new lift pumps, ran engine and fuel cleaner, computer says everything is good. Could someone give some ideals that I can pass on to the shop. I think they are clueless at this point.
Thanks guys.
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