Quote:
Originally Posted by amad1972
Gas is fresh. I have run two tanks through since I've owned it. One of the tanks had a can of Seafoam in it. I just now put a brand new OEM air filter in it. When I got it, there was no air filter, just the screen. No change from before or after filter.
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this is your biggest clue.
the PO set the main jet too big or the needle are too rich. once the needle gets close to all the way up it is letting in too much gas for the amount of air going in. before maybe it was better with no air filter because more air would go in to counteract the extra fuel up top.
probably more likely he had some aftermarket pipe on it and he just swapped back stock parts when he sold it without retuning.
or maybe your coils are going out.