Well I apologize. After looking closer at things and finding the stock flame arrestor cover the details I provided were wrong. I am attaching a photo with all information
Thanks for the replies.
Yes I have spark and fuel is present, plus you can smell the gas. Stater valve when pressed fuel comes out.
I had the boat in the shop for diagnostics the next day, of course the boat started? They couldn't test under load.
The shop flushed the fuel lines, replaced one...
I have a 2002 Crownline BR230 with a 5.7L carbureted Mercury Mericrusier with 400 hrs. Drove it all day until suddenly it would surge in rpms then drop and be fine then a few seconds later do it again. Backing off the throttle then eventually it would stall when trying again and again until it...