Idle RPM on Merc. 150XRi

monstermash

Recruit
Joined
Jan 13, 2003
Messages
4
Hey guys, about what RPM should a Merc. 2.5L XRi 150 run at idle? We just had a lower unit put on due to a cracked pinion gear, and we are a little gunshy. When we ran it yesterday it was idling at 1000 RPM. Does this motor have a high idle setting and how long shoukd that run, It was pretty chilly when we ran. Any info would be greatly appreciated.
 

Waterbugtoo

Petty Officer 1st Class
Joined
Nov 19, 2002
Messages
245
Re: Idle RPM on Merc. 150XRi

Around 800 to 1000. Not every motor will act the exact same at any specific RPM.
 

ODDD1

Lieutenant Junior Grade
Joined
Jan 23, 2001
Messages
1,054
Re: Idle RPM on Merc. 150XRi

in gear, warm...650 is good, 750 is max [for shifting reasons]...there is no rpm increase built into the efi system during warmup....make sure you are tight on the idle stop with the throttle control cable, and see if you can pull out some idle timing to lower the revs....
 

Hooty

Rear Admiral
Joined
Oct 2, 2001
Messages
4,496
Re: Idle RPM on Merc. 150XRi

...and remember, when shifting into gear, DO NOT ease into gear but shift into it with authority.<br /><br />c/6<br /><br />Hooty
 
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