water pressure 150 mariner WOT

rocks

Seaman
Joined
Aug 19, 2004
Messages
64
Mine is 18 psi at WOT, with a weak stream at telltale . At idol it's 5psi with a great stream.I have replaced both water pump and poppet valve. Do these #'s look right?.Thanks
 

LubeDude

Admiral
Joined
Oct 8, 2003
Messages
6,945
Re: water pressure 150 mariner WOT

Thats right where my 150 Merc runs.
 

KCLOST

Commander
Joined
Jun 22, 2002
Messages
2,095
Re: water pressure 150 mariner WOT

What year is the motor....<br /><br />I see slightly higher numbers on my 175...<br /><br />5psi at idle with stats open...<br />10-12 psi at idle with stats closed...<br /><br />20-23 psi at WOT...With a strong stream...
 
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