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2002 Yamaha 115 4 stroke slightly surging at idle

P

pas_bon

Member
Noticed recently that my motor is surging slightly when idling. Runs fine otherwise and when I bump up the idle with the throttle it goes away for a moment. Wondering if this is an indication of something that could get worse and what should be suspected and or looked at. Motor has slightly over 200 hours.

Thanks!!!
 
You need to check the TPS sensor voltage at idle
you need to check oil level, should be half way up dipstick, if over filled you need to replace the 2 stat

You also have an idle control valve that can stick, your going to need to refresh it with the YDS program
 
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