Connerbrown56
New member
I’ve got a 1999 75 mercury 2 stroke, it doesn’t run WOT when I started Saturday was only getting 3500 rpm’s, since then I’ve done every basic repair that can be done. Near fuel pump diagram, new spark plugs, a coil pack, new fuel lines going to fuel pump, new gas new oil, compression check was 100 psi on all 3, cleaned carbs out. Took it back out yesterday ran better was getting about 4800 to 5000 rpm’s still lacking about 1200 rpm’s. Outside of being put in the water it runs and sounds great without being put under load, as soon as it gets put into the water it doesn’t do the same as on land with the water ears on it. I did notice a small chugging noise at idle speed about 1500 rpm’s where it sounded like the engine was struggling to get enough gas or air but I’m at a stand still now not sure what to check or do next. Any help or advice would be great thanks in advance.