Omc Cobra Not turning over

[Geodude619]

I have a question, I went to turn on my boat, and its a no go. I just hear a single click. I pulled out starter and tested it (ran direct power and ground) and it worked, so I went and changed the solenoid. When everything is connected (with the starter still out) I turned the key (grounded starter to battery) and the starter turned. But when I put the starter back on, it clicks again, any ideas? Could it be maybe batterys don't have enough juice? Or maybe somthing else? Thanks in advance

 

[southkogs]

Starter turns when it is off the flywheel, but won't spin when it's on the flywheel? I dunno' how hard it is to pull a Cobra, but I'm wondering if you're locked up in the drive or engine. Can you rotate the engine by hand/tool?

 

[Geodude619]

Correct, starter turns when it is off flywheel but not when it's on flywheel. I have not tried to rotate the engine, maybe I will do that. Sounds like bad news though.

 

[garbageguy]

Following up on your original post - have you load-tested your battery?

 

[southkogs]

how do/does the lube(s) in your stern drive gear case(s) look? (I don't know the Cobras very well)

 

[bruceb58]

If you try to turn your engine, don't turn with the crankcase bolt.
https://www.amazon.com/Sunex-10000-C...F23KY8W2913Y5B
https://www.amazon.com/Proform-66782.../dp/B000CCG1DQ

You may also want to remove the drive if you are unsuccessful turning the engine.

 

[Geodude619]

I have not load tested batterys, I'm going to do that this afternoon. And I have not changed lubes/oils in stern drive, that was going to be the next thing I do.

 

[Geodude619]

If is helps any bit more, the motor was over heating last time I turned it on, since then I changed exhaust manifolds and risers and all gaskets and I did oil change and spark plugs, then I went to turn it on and it was a no go

 

[gm280]

Until you verify the engine can turn, everything else is useless. That would be the first thing you need to do now. Over heating is a serious issue it seems. How bad remains yet to be seen. JMHO