I have a center console with a 2006 Carbureted BF90.
Purchased with only 70 hours in November,ran 100 ours since then. My problem is that when I run it on freshwater lakes where it is hot Nevada (1,300 feet), Utah (3,600FT) it requires that I prime again after restart in the afternoons when weather is hot, 100F +. Prime once before the restart and again during acceleration to get fuel to the carbs after it stutters from fuel starvation. Once at cruise no problem. When running in cool weather at sea level or no problem.
I replaced the tank as a precaution at 70 hours. I did not replace the check valve but everything else in the tank is new. I just replaced the fuel prime bulb, line and the gas connector to the engine to try and remedy the problem last week but that did not fix it. I will take a portable tank with me in a couple of weeks to verify the fuel between the tank and the primer is not the problem and will also change all the fuel filters and the check valve.
When it misses it is actually smooth like it is running on one pair of carbs or 2 cylnders. It does not stall ,it just seems to run smooth on 2 cylnders until the fuel fills up the carb or carbs again from priming. This only happens after the day has warmed up and the engine has heat soaked after shutdown. After the problem is resolved through priming it will happen again when I slow down to trolling speeds. This only happens though after it is heat soaked in the afternoon on hot days.
Kind of wordy but is an unusual problem. Thanks for your help.
Purchased with only 70 hours in November,ran 100 ours since then. My problem is that when I run it on freshwater lakes where it is hot Nevada (1,300 feet), Utah (3,600FT) it requires that I prime again after restart in the afternoons when weather is hot, 100F +. Prime once before the restart and again during acceleration to get fuel to the carbs after it stutters from fuel starvation. Once at cruise no problem. When running in cool weather at sea level or no problem.
I replaced the tank as a precaution at 70 hours. I did not replace the check valve but everything else in the tank is new. I just replaced the fuel prime bulb, line and the gas connector to the engine to try and remedy the problem last week but that did not fix it. I will take a portable tank with me in a couple of weeks to verify the fuel between the tank and the primer is not the problem and will also change all the fuel filters and the check valve.
When it misses it is actually smooth like it is running on one pair of carbs or 2 cylnders. It does not stall ,it just seems to run smooth on 2 cylnders until the fuel fills up the carb or carbs again from priming. This only happens after the day has warmed up and the engine has heat soaked after shutdown. After the problem is resolved through priming it will happen again when I slow down to trolling speeds. This only happens though after it is heat soaked in the afternoon on hot days.
Kind of wordy but is an unusual problem. Thanks for your help.