temp alarm, oil at 0 PSI, but level full?

jaxboater

New Member
Jun 1, 2008
12
Jacksonville
Boat Info
240 sundeck
Engines
5.0 MPI with Bravo lll
First I would like to say thanks to the members that answered a couple questions when purchasing our boat a couple months ago. This site is great and I look forward to having enough Sea-Ray experience under my belt to be a contributor in the future .

Our new boat has been great. She had 311 hours at purchase and we stand at 345 today. Unfortunately we required a SeaTow last weekend after a nice run to a restaurant with the in-laws, a great meal and what what was turning into a beautiful moonlit ride home. As we were leaving the restaurant dock, still in the no wake zone, the temp alarm sounded. I looked at the gauges and temp was around 190 degrees and oil pressure was reading 0 PSI. I shut her down immediately, checked the oil level (was ok) and when I noticed water leaking from the raw water pump (just behind pulley), called SeaTow.

Leading up to the incident:

Ran for about 40 minutes to the restaurant at 2800 rpms. Along the way ran over shallow water (2.5'-3.0') for about 100 yards, and trimmed motor some. Never felt drive touch bottom. Stupidly learning about the various screens on the GPS instead of paying proper attention!

As I entered no-wake zone before reaching the restaurant dock, I noticed a high pitched, intermittent squeal (did not sound like the belt). Knew it wasn't a good sound, but noted nothing on the gauges. A quick look in the engine compartment revealed nothing. As we were leaving all looked and sounded well for about 10 minutes. I never saw the temp or oil pressure gauges move into danger zones before hearing the alarm.

I am fairly handy and want to replace the pump myself but the oil pressure has me stymied. With boat back at the marina, on the rack yesterday, I started the engine (with water muffs on, and ready to stop if no oil pressure) and she ran great. Oil was at 40 psi and temp gauge at 175 degrees. I did not put in the water though and really hoping for some guidance from you guys on whether I could have another problem. I can always have the marina mechanic take a look but that wouldn't be as much fun! Unless he'll let me look over his shoulder!

Any advice would be great!
 
do you have the SMartCraft window in the speedo. reason I ask this cause my Oil Pressur gauge sticks all the time at Zero, but if I check SmarCraft, it will show somewhere between 46-56 depending on speed.

Interesting thing is if I turn the motor off and then turn it back on in a couple of seconds the Oil pressure gauge or what ever other gauge was not functioning Will be functioning just fine. I was told once that their was a BUS terminator for the instrument cluster that SeaRay Did not put on and sometime causes the gagues to act up.

slight work around is to give SmartCraft plenty of time to reset before you actually turn the ingnition to the run position. (couple of seconds at least).

try it and let us know.
 
Last edited:
Trashed water pump and temporarily shorted out oil pressure sensor - just a guess.
 
Does anyone know if there is a trick to pulling the pulley off the seawater pump shaft? I got the pump out yesterday after a couple contortioned hours and some bloody knuckles, only to find that I cannot get the pulley off, even with a removal tool. It has some rust, but it doesn't look like enough to be holding it on so tight.
 

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