1993 Mercury 200 hp EFI

[amacfishes]

New to the boating world and my engine runs rough at idle and low speeds. I have read great reviews on the use of Quicksilver Power Tune engine cleaner in many places. I am looking for advice or videos on how to do this process with my EFI engine. Any help or advice or videos would be greatly appreciated.

Thanks in Advance.

 

[faztbullet]

Need to check fuel pressure, replace fuel pump diaphragm and if engine is new to you, send injectors to Brucato to have cleaned,flow tested and balanced. Cleaners do not remove debris in the injector screens.