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Water pressure gauge
My boat has a 1990 mercury 2.5L 200hp and I'm getting ready to order a water pressure gauge. Should I get a 15psi gauge or a 30 psi gauge also what is the ideal psi for my motor?
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Member
Not sure if yours will be the same, but the recommendation I was given for a '95 Black Max XRi 200 2.5L was 2-4psi at idle and 12psi at WOT (both are bare minimums). Mine would hit 16-18psi at WOT with a new impeller, but has dropped back down a bit this year (around 10 or so)...will be replacing the water pump in the next week or two (current one is 3 years old).
I replaced my gauge with a 30psi model.
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I got 30 psi for mine, works well.
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Ok thanks fellas!
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Saw one on eBay tonight for $25