My 1996 Mercury 225 EFI will bog down and not get on plane any one know why?

My 1996 Mercury 225 EFI will bog down and not get on plane after idling out from the no wake zone. Anyone heard of this going on ?

The boat was just in the shop having the fuel vapor separator rebuilt all new gas lines new plugs new filter on the motor as well as new fuel water separator filter fresh gas in the boat i called the mechanic he said these motors are known for this they shut down cylinders while idling and the cylinder will fill with gas and when i get on the throttle the cylinder is full of fuel when it comes back on. he told me the solution to this is idle out of the no wake zone shift it to reverse rev it up hard then put it in gear and give it the throttle needed to get on plane 3/4 to full throttle and the it will get on plane i tried that and it worked buy it seems odd to me their has to be something else going on any advise will be great guys thanks.

Re: My 1996 Mercury 225 EFI will bog down and not get on plane any one know why?

Find yourself another mechanic.... the only way cylinders will fill from fuel is if injectors is flooding or the bleed system check valves are sticky/bad(my bet). This motor does not shut down cylinders when running/idling only when shifting....:facepalm: What did he rebuild as there is aint much in a VST as its just a tank with float,needle,filter and pump.

Re: My 1996 Mercury 225 EFI will bog down and not get on plane any one know why?

He soda blasted the inside of the vst tank it had old fuel sitting in it he said that the tank looked like it was lines with mud and filter inside it was clogged up also replaced all fuel lines in boat and motor replaced plugs also

Re: My 1996 Mercury 225 EFI will bog down and not get on plane any one know why?

A waste of money if he didnt send injectors off and have cleaned and flowed and clean the pressure regulator they had old fuel in them too.