I have a 2006 Mercury 60HP Bigfoot 4-stroke that's been running great until this summer. At high speed it's fine but at slow speed it runs rough and at idle, it runs al little while then finally stalls out. It starts right up again without choking it or pumping the fuel line bulb. I've used new gas, bought a new gas tank because I thought there was an air leak. I checked the plugs but they all seem to be firing. I watched the fuel filter bowl but don't see any lack of gas. The fuel line bulb seems ok, not too soft. Pumping it doesn't help at all, it still stalls. I suspected the fuel pump for a while because it seemed to be ticking and it stopped when I pumped the fuel line bulb. When I bought the new gas tank that seemed to stop. At one point the engine seemed to pop with pre-ignition like the timing was off but not recently.
Any suggestions.
Any suggestions.