Mercury 40HP

[Rick Thompson]

Hi folks. I have a Merc 40 HP It is a '93 model year. It Idles a bit rough and is slowwww to accelerate. It runs fine at high range. Also it fouls the plugs immediately.<br />I have changed all the fuel filters and even the tank. (there was a lot of black junk in there.)

 

[alcan]

Re: Mercury 40HP

Hello Thomson<br /> Well you know that black junk that was in your tank? It probably work it's way to your carb. I suggest you remove and clean the carb and the rest of the fuel system.