Question about 1990 Yamaha FZ 750 KS (Europe)

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Hesitation On to my question. I can get the bike to start and idle fine, but when I slowly build rpms it starts to hesitate and sputter at 2000. If I can get over the 2k mark, it's fine and can throttle up and down quite nicely, but sometimes it drops out and stalls. Could it just be a few more of the cobwebs in the system and improve the more it runs? It's been sitting for about 4 years I think, and it did seem to be starting to run a little better near the end of my playing around last night. Maybe I didn't seat the carbs entirely right?

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If it sat for 4 years with gas in the carburetors you will have to clean them--that goo in them will keep breaking up and stop up everything.

Posted on Nov 10, 2008

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