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Old 09-06-2017, 07:22 AM   #1
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Yanmar 6lya surging

My Yanmar 6lya surges at idle after a long hard run. It doesn't stall and can be accelerated normally. Any thoughts?
TIA, Tony
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Old 09-06-2017, 07:36 AM   #2
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What's the idle rpm? If set too low it can surge. If you just barely crack throttle, does surge go away? I think these like around 700rpm as hot idle. If at 600, surge is possible.
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Old 09-06-2017, 07:47 AM   #3
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Absolutely Correct- Normal low speed idle is 700 RPM for these engines


Cheers Steve
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