I have a strange problem. I have...

[Hari]

I have a strange problem. I have a 2016 Sundance 310. The port engine ‘dies’ after about 30-40mts. It is not overheating (temps remain steady). It tries to start and reaches about 600rpm and then dies.If I leave it shut for about 2-3 hours, it starts up again and works. I have considered it might be overheating (but temperatures don’t go up) or a spark plug (but it works well after a few hours).

Any suggestions?

[Marc222]

Have you tried engine treatment like Seafoam or Lucas oil. I was having a similar problem. Mine was bad gas.

[Stuframp]

I had very similar issue on my Sundancer 320. It turned out to be the coil overheating.. Replacing the coil fixed the issue.

[BoardRoomII]

Sounds like the fuel cooler module is clogged. Replace it.

[Seabuz]

BoardRoom is correct. There is a known problem with the fuel coolers. Paint or barnacles. Paint flaking off inside blocks the fuel and barnacles can block the cooling water. Have a mechanic check the fuel pressure and water flow.