Thread: Mercury 200 EFI water pressure problem.
View Single Post
  #3  
Old 06-27-2007, 11:24 AM
SECF3114M73J SECF3114M73J is offline
Senior Member
  
Join Date: Nov 2002
Location: mystic,ct.
Posts: 188
Default 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.
Reply With Quote