Everything seems fine, as it runs fast and sounds clean with the exception of a high pitch "whistle" at over 5000 rpms. Should I be worried or have it checked? Running a Gambler intimidator. Adding that it is a 2005 ProXS 225.
Modified by GamblerSam at 8:24 PM 1/28/2010
My 225 opti does the same thing and I was told by my local marine it is normal thats the airpump that i hear. I've been running with the wistle for a year now and so far so good. It's not real high pitched but if I listen for it I can hear it
2000 520vx Ranger
250 PRO XS
SERIAL#2B115788/ 25P Fury 4/ 25P Fury 3 blade
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GamblerSam »</TD></TR><TR><TD CLASS="quote">Everything seems fine, as it runs fast and sounds clean with the exception of a high pitch "whistle" at over 5000 rpms. Should I be worried or have it checked? Running a Gambler intimidator. Adding that it is a 2005 ProXS 225.</TD></TR></TABLE>
First, let me say that I never say "don't worry about a noise", unless I've heard the noise, and have ALL of the information.
How long have you had this engine on your boat? Has this "whistle" always been present, or is it a "new" development?
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Fished out of a Ranger with a Yamaha this past weekend and it was doing the same thing. I have never heard a noise like that from my Merc.
Bryan McDonough
2023 Nitro Z21 XL
Nitro Team
I bought the motor new in 2005 and it gets a service and check every Spring. Has always had some noise but I have to turn my head and listen for it at WOT. Boat runs upper 70's so it doesn't seem to be a power issue.......idles fine, no noises at lower operating rpms
Would be interesting to know if the "whistle" is the same, worse, or "gone" with the cowling off....
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Next time out I'll run it without the cowel and see. Thanks for the help !!!
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GamblerSam »</TD></TR><TR><TD CLASS="quote">Next time out I'll run it without the cowel and see. Thanks for the help !!!</TD></TR></TABLE>
That's a good idea! Just be very careful when taking off, or when coming off plane to try and avoid "backwash" into the cowling (which could easily quelch the "whistle".... or any other noises the engine makes, for that matter).
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
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