About 3 weeks ago I bought a 2006 20SSV with the Indmar Assault 325 in it. The boat has 270 hours on it. Ive taken it out a few times now and have put about 5 hours on it.

Yesterday we went out for a while and decided to park in a cove to swim some before heading back to the ramp. We swam for about 45 minutes or so and when we went to leave the boat didnt want to start. Finally got it started and it ran really rough. It idled up and down and even backfired once. At that point I decided to quit trying and luckily another boat offered to tow us back to the ramp.

We get back to the ramp and I decided to see if it would start now because I had heard of the vapor lock before. Sure enough it fired right up and ran great. I pulled it back on the trailer and brought it home.

My question is, does this sound like vapor lock to you guys? I would have poured some water on the fuel pump but was unsure exactly where the pump is located. I will be changing the in line fuel filter this coming week and will use ethanol free gas from now on to see if this helps with the issue.

Any other help would be greatly appreciated and also if someone could explain where the fuel pump is located that would be great.

Only other issue I've had with the boat is that one of the rear ballast bags somehow fills up on its own while driving.

Thanks for any help! This is my first v drive boat.