Occasionally crank not start

[Sea wonders]

Hello. So today I used the boat for bout 2 hours then parked at the sandbar, then pull up the anchor and went to start the boat, it would crank but no start, try to jump start it but I would get the same results. I switched the battery switch from 1 to 2 and still no start. I waited a little be to give it a rest and try again and it started after a very long crank, this is the second time this happened. After I got home I had the engine running and flushing the salt water out, and like 5 min later I got a long beep. I look at the oil pressure and temperature. Oil was good and temperature was about 175. Any advice thank you.
2007 sea ray 260 sundancer 350 Magnum

 

[Korkie]

The temp you are seeing is the engine coolant temp, not the overall temp. The long beep could have been low raw water pressure, manifold temp hi, outdrive fluid low, oil pressure low. So far as not starting - check the basics; spark and fuel. As long as you are cranking over, switching batteries really isn't changing anything. If you are not motor savy enough, may be good idea to seek out a trusted friend or mechanic to help you troubleshoot.

 

[Sea wonders]

Thank you for the advice, I will seek for professional help.

 

[Korkie]

Sea wonders, where are you located? Other members may be able to direct you to a trusted mechanic in your area. For example - I have a private Merc, Yamaha, Volvo and Honda Certified mechanic that is 2nd to none and extremely reasonable cost wise. He is mobile.

 

[Sea wonders]

Am located in port saint lucie fl.

 

[Ericinmich]

Sounds a bit like vapor lock. Some early efi systems with lower fuel pressure can get that.

 

[Sea wonders]

Sounds a bit like vapor lock. Some early efi systems with lower fuel pressure can get that.

Thank you for the info, hopefully I can get all that checked out this weekend.e

 

[El Capitan]

I’m in Vero Beach and 3 mobile mechanics that told me they would call back to confirm an appointment at my boat, none have called back.

Whatever you do don’t go to Red2Green in Stuart. Kurt is a rip-off artist.

Down here most mechanics don’t work on IO’s.

Full Throttle mobile guy supposed to call or text me tonight to meet at boat tomorrow. It’s 8:15pm Sunday night and nada.

I’d love to find an honest competent mechanic. I doubt there are any down here.

 

[Sea wonders]

Thanks for the heads up, I found a mechanic, I drop off the boat at his shop hopefully I hear back from him by Tuesday. If all works out good I will let you know the location of the shop.

 

[northern]

Have 5.7 in jetboat. Same thing happened to me. Turned out fuel filter was very dirty. Changed fuel filter and all has been good.

 

[El Capitan]

I’m in Vero Beach and 3 mobile mechanics that told me they would call back to confirm an appointment at my boat, none have called back.

Whatever you do don’t go to Red2Green in Stuart. Kurt is a rip-off artist.

Down here most mechanics don’t work on IO’s.

Full Throttle mobile guy supposed to call or text me tonight to meet at boat tomorrow. It’s 8:15pm Sunday night and nada.

I’d love to find an honest competent mechanic. I doubt there are any down here.

So Jason from Full Throttle in Ft Pierce called and showed up.

He diagnosed the crank but no fire problem. Bad carb. Weak fuel pump. Bad gas.

We looked up the Rochester quadrajet the previous shop put on last July. Turns out it’s an auto carb not marine. They purchased it from Napa. Friggin crooks.

Jason was good. You can tell a good mechanic by watching how he works. How he goes about diagnosing. His patience.

I’ll never take my boat to a shop again.
I was right there assisting the whole time and got to see what he did and ask a million questions. Mobile for me from now on.