Boat won't start after oil change-any ideas?

[JoeB14]

I have a 2007 Utopia 205. Today I took it out of storage to change the oil and filters. Both engines started up fine, and I ran them for about 30 seconds (with water on the flushing connection). Went through the oil/filter change for the starboard engine, and after adding new oil it started up fine. Repeated for the port engine, but after filling with oil neither engine would turn over. Diagnosed a dead battery ( circa 2010), so I put in a new one. This is where it gets interesting.

Tried to start port engine. It would turn over for about 5-10 seconds, wouldn't catch, then it would stop cranking.

Tried the same for the starboard engine, and it simply wouldn't turn over at all. Like it would try to engage, but just do nothing.

Any ideas what to check next?

 

[LouDoo]

Are you sure the new battery is fully charged, try leaving it on a battery charger overnight and try again in the morning. Also make sure the battery connections are clean and tight, also check the connections at the solenoid(s) and starter(s). But I'm thinking battery.

Lou

 

[Coastiejoe]

Sounds like a voltage/connection issue to me as well.

I would do as Lou suggested and TRICKLE charge over night. If your charger is over 2.5 amps disconnect the batteries unless the battery switch can isolate them out of the circuit (which is should do).

 

[JoeB14]

Battery was fine. I'm ashamed to admit that in the process of running the motor to get the oil stirred up, and shutting it off, we didn't shut off the water supply quick enough. Water in the engines. Got it removed quickly, blown out, and filled/ran/changed the oil three more times to get all of thewater out. Both engines run fine now. Hope to get the boat on the lake this weekend.
Whew-what a learning experience.

 

[pwgsx]

ALWAYS shut the water off first, then the engine. You must have had the water flowing for some time to fill the exhaust for it to back feed into the motor.
Have a helper stand at the water shut off incase the engine stalls they can cut the water off. If you are alone get a short run of hose with a ball valve that you can control while in the boat, that way you are not having to climb out of the boat to shut the water off and then run back to the boat to kill the engine.