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250 optimax issues #13847773 01/15/21 09:22 PM
Joined: Feb 2006
Posts: 75
mlatham Offline OP
Outdoorsman
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Joined: Feb 2006
Posts: 75
2015 250 pro xs. Acts like it’s running out of gas after running a while at mid to high rpms. 200 hours. Shop says not acting up in the tank so they want to lake test. Any ideas??
My 4th optimax, 2 were bulletproof and 2 were not. This one will probably be my last Merc...

Re: 250 optimax issues [Re: mlatham] #13847847 01/15/21 10:16 PM
Joined: Mar 2010
Posts: 19,703
T Bird Offline
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Compression check.

Bad gas. Test for water.

Change fuel filter, supply hose and primer bulb.

Last edited by T Bird; 01/15/21 10:16 PM.

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Re: 250 optimax issues [Re: mlatham] #13848088 01/16/21 01:30 AM
Joined: Jan 2004
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rb7764 Offline
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+1 on T Bird suggestion as a place to start. Did you scan for codes?

Re: 250 optimax issues [Re: mlatham] #13848309 01/16/21 11:39 AM
Joined: Jan 2018
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RunTX Offline
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+2 on T Bird recommendation. My OptiMax is a few years older than yours - was having similar issues; I replaced the primer bulb, removed the add-on external fuel filter (installed by prior owner), new fuel filter and plugs...she's back to running like new.

Re: 250 optimax issues [Re: mlatham] #13848491 01/16/21 03:12 PM
Joined: Apr 2004
Posts: 375
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irbf Offline
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I would suggest posting on 3.0L Merc forum on Bass Boat Central. Moderator is a Mercury dealer is South Carolina who is always willing to help.


2008 BassCat Puma, 250 ProXS
Re: 250 optimax issues [Re: mlatham] #13851067 01/18/21 07:29 PM
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V-Bottom Offline
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WATER.............


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