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#2
06-27-2007, 12:11 AM
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Re: Mercury 200 EFI water pressure problem.
Remove the tube and blow air through it. More than likey a piece of trash lodged in that tiny tubing.
Also did you replace the pop-it valve??? Ken
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See ya, Ken © 
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#3
06-27-2007, 11:24 AM
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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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#4
06-27-2007, 10:09 PM
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Re: Mercury 200 EFI water pressure problem.
Mine is all over too no problem
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Any way you measure it - dumbass is expensive
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#5
06-27-2007, 11:50 PM
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Re: Mercury 200 EFI water pressure problem.
You need 7-8 lbs at cruise, and 3 lbs at idle at a minimum.
__________________
Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes. Fr. Frank says: Jesus liked fishing, too. He even walked on water to get to the boat! Currently without a SeaCraft  (2) Pompano 12' fishing kayaks '73 Cobia 18' prototype "Casting Skiff", 70hp Mercury
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