Blake Davis
New Member
- Jul 6, 2020
- 4
- Boat Info
- 1986 340 Sundancer Sea Ray
- Engines
- 454 Mercury Cruisers
Hi everyone, I am new to the site. I have a 1986 340 that is in good shape, but the port engine has been a problem for a while. I was willing to pay to have a marine mechanic to look at it, but trying to get a marine mechanic at this time of the year in my area is impossible so I have brought in a automechanic that works on some of our company equipment. There was too much fuel getting pumped into the carb, and flooding it, so I had the carb rebuilt, and replaced fuel pump, wires, cap, and rotor. Once this was all done we attempted to start engine which created an explosion that blew off the top of my port side muffler with enough power that it sent the top of the muffler through my canvas, and over to the next dock(Thankfully no one was hurt). This engine has always ran rich, spewing out gas in the water, and at this point I am thinking of a bebuild, or after market. It's a good boat, and I don't mind spending some money on it. The original motors were 350s that were replaced with 454s. Apparently the 454s only have 600hrs. on them, but I am not confident in this. The 454s make the boat sit very squat in the water. We will be doing a compression test this week. What are your thoughts?