Posts: 63
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Home Port: Shark River NJ
Vessel Info: 1995 3300 open
Twin 454 crusaders 2017
04-15-2024, 04:03 PM
(This post was last modified: 05-11-2025, 03:55 PM by Mydiamond.)
My 33 open usually runs 40 - 60 psi.
Engines are crusader, gas. 454 xl
After changing the oil at the end of the season, oil pressure jumped to 80 psi.
Same type oil and filter.
Changed oil filter again per forum suggestions - still issues
Sending unit new.
Anyone have experience changing oil pressure release?
Any other suggestions would be appreciated.
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Home Port: Lake Michigan
Vessel Info: 52 Sovran, Cat 3406
It’s not unusual for new oil to kick pressure up a bit, especially when cold. As long as it doesn’t climb any higher I would run it for a while and see if it stabilizes.
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Home Port: Port Canaveral, FL
Vessel Info: 2003 Tiara 50 Open
3406E Cats
That's a pretty big jump. Try changing the filter first. Could be a mfg issue with the filter.
Sans Peur 2003 Tiara 50 Open
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Home Port: Shark River NJ
Vessel Info: 1995 3300 open
Twin 454 crusaders 2017
Closing this out.
After trying
New filter
Oil flush
Change oil twice
Changed sending unit
…..
I purchased a high oil pressure relief valve.
$6 part. (Recommend getting new O rings also.
Thank goodness it was starboard engine .
Took off hoses and 2 bolts - replace relief valve.
Good as new
Thanks to all of the suggestions along the way.
