2003 F115 Suzuki Rough running engine

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Sep 23, 2003
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About 100hrs now, my friend's engine is running rough at idle and mid-range. After the motor runs for a bit it will turn up to full RPM at WOT, and then it will run fine. But if turned back off after a bit it will start back up and run rough again. <br /><br />My thoughts, spark plugs? Gaps? <br /><br />I saw some threads about cheap fuel bulbs, problem there?<br /><br />Thermostat stuck open?<br /><br />Motor oil has been changed and the 20 hour dealer maintenance was done on schedule. Suggestions?<br /><br />Thanks!<br /><br />Tully Mars
 
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