mercruiser 5.7

Have had the boat on out Lake Erie 5 times now. Other than our first voyage where we discovered the coil was shot and got towed back, the 5.7 Merc has run great. Temp dead on at 170. Easily cruising at 25-30. Have some things left to do still. But my biggest issue is vapor lock at this...

I have a 2001 Sundancer 290 (Bravo III). I have been getting a frustrating engine alarm. Sometimes it occurs at low speeds, sometimes when on plane, or even sitting in the slip. Sometimes when getting it while in the slip, putting the boat in neutral and revving the RPMs up a bit will cause...

I just purchased a 2011 sundeck 240 with 5.7 mercruiser. Only 60 hours on the engine. I previously owned a 1999 sundeck 210. 700 hours on the mercruiser 5.0 without a problem. First time boating in the 240, I got an engine alarm that there was an exhaust issue, and something about a bad oxygen...

Need some help here. I have a 2008 310 Sundancer with 2 x 350 MAG MPI 5.7 Mercrusier engines. I just changed the manifold and exhaust to fix the overheating problem and here comes another issue which never happend before. When I speed up the throuttle, I heard a beep from computer and then...

One side of my exhaust gets considerably hotter than the other and seems to have less water coming out from that sides discharge. Any ideas? Please help.