The problem was being under warranty the dealer was supposed to do all of that but they just kept telling me there were no issues, and did nothing. They found out when I was there to pick it back up that it wouldn't start because I made them start it in front of me. They had the boat for a month fixing a fiberglass issue, and basically ignored everything I told them. They did a good job on the fiberglass, but nothing on the starting issue.
Now I have to take it to Havasu which is a bit closer, to another dealer to try again. It is still a 2 hrs drive though, and a big hassle, plus the starting issue only happens after it sits for a week or so.
Whether they were supposed to check those things or not you need to check this stuff to make sure to your satisfaction it has been done, or keep driving your boat to the dealer who didn’t do it in the first place.
Again, I’d like to know exactly how the starting process is after it sits for “a week or so”, as I just asked above. If it lights quickly then dies, and does this a couple of times that doesn’t seem like an issue to me, especially if when used every other day it starts and runs fine. Do you turn the key on and let the connext boot up, or do you just turn the key from off to start?
What about the battery questions?
Again, before you start hauling this thing all over the place to a new dealer put in a new set of plugs to either eliminate that as a cause or it will remedy the problem.
I went back and re read this whole thread and I saw where
@Neutron said this was not an issue, as a fyi,
@Neutron is a life long mechanic who now has his own shop where he works on these engines as well as other engines. I get that it’s annoying AF, but let’s look at this, if it has to sit for a week to duplicate the hard start it’s difficult for a mechanic to duplicate the issue, especially if the mechanic can’t just let it sit overnight and have the same problem, it’s going to be sitting at the dealer a loooong time. If the mechanic lets it sit overnight and it starts right up the next day he’s going to think that engine is working good. Neutron went so far as to say these are not like a car, they don’t have cold start with a high idle.
Yes, a mechanic can put a fuel pressure gauge in line and check the fuel pressure, but I doubt that’s going to be the issue because if the engine is starting that means it has fuel, as I said previously, in my experience with power sports equipment the fuel pump doesn’t run until the engine is cranked over and the contacts are made up in the ECU, then the fuel pump will run for a few seconds after the engine dies before shutting off. On my FI dirt bikes I bump the starter after it’s been sitting to get the fuel pump to cycle before I hold the starter button down. There is an internal pressure regulator on these fuel pumps, unwanted pressure is dumped back to the tank, these pumps produce far more pressure and volume than the engine needs, IF there was a pressure or volume problem the engine would not perform at WFO, and I assuming the engine performs just fine while it’s running.
By the way what are the maximum rpms you’re getting?
Have you checked the oil level? Might seem stupid but a too high oil level has to be eliminated.