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Idle RPM

SCSX190

Jet Boat Addict
Messages
109
Reaction score
49
Points
97
Location
Lake Wylie, SC
Boat Make
Yamaha
Year
2016
Boat Model
SX
Boat Length
19
What is the expected RPM @ Idle. I am bouncing around between 1150-1350. Shouldn't it be steady @ around 1200?
 
Last edited:
It should be about 1300 +/- 50. Is it surging, or just kind of a random bounce?
 
Wandering idle, wouldn't call it a surging idle but it goes from 1150 to 1350 within a few seconds. I don't idle that much so I am not sure this is different, or abnormal behavior. Is that normal on the 1.8 HO?
 
Mine varies 100~ rpm up and down even at 2500 rpm while flushing. Sounds like a 2 stroke.
 
I have HO MR-1s I know nothing about the 1.8s
 
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