New to me Shamrock 20 PH with a 1997 Crusader 305 XL reportedly rebuilt in 2001 with new rochester 4BBL in 2006 and a new fuel pump and high pressure line. So both tanks in this boat need to be replaced so I just hooked up a 28 gallon deck top tank and plumbed it through the filter then direct to the engine. Started the boat and it ran for about 4 minutes started warming up and then I believe ran out of gas. I attempted several restarts to no avail it would start and run for a few seconds and then die. Removed flame arrestor and looked at forward venturi and when pushing the accelerator pump it squirts plenty of fuel but won't stay running. So, I've checked all the normal stuff, cleaned the carb without removing it with some carb cleaner although it appeared very clean. I think I may have a problem with my new fuel tank because I used a priming bulb between the tank and the fuel filter. Worked fine, pumps fine, brand new bulb, check valves work fine, etc.... I'd like to know where the fuel pump is located and start there but couldn't find it on this Shamrock although it's got to be there somewhere. Any advice is appreciated and any comments on the priming bulb are welcome. I get the impression the boat ran long enough to empty the bowl on the carb and hasn't run since accept when starter is engaging. Thanks.