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Mercury 200 EFI water pressure problem.
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06-27-2007, 11:24 AM
SECF3114M73J
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Join Date: Nov 2002
Location: mystic,ct.
Posts: 188
Re: Mercury 200 EFI water pressure problem.
The pressure will vary between idling and running at cruising speed. My Optimax runs 3-4 psi at idle and 12-14 psi at cruising speed. Does the motor over heat? Also check thermostats.
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