Engine cut out

[Puddle]

Looking for some direction, we just bought a 98 air Nautique with just shy of 600 hours on the GT 40 engine. First couple weekends out ran like a dream. Third weekend out crossing a wake from another boat (at speed) the engine seemed to "stop" momentarily then carry on. Next weekend out we had a day with rough water and the problem continued repeatedly on our way to pull the boat out. Slowed to under 20mph and it went away, sped back up to 25ish and it came back. Can anyone point me in a good direction to start, I don't know how to recreate the situation off the water, and chasing the problem on the water is a lot less fun then surfing.

[CharlieP]

safety lanyard cutoff lose?

[Puddle]

Funny you mention that, as I posted I wondered the same, went over a checked the boat and found that the PO rewired it into the glove box so it effectively does nothing His connection doesn't seem too bad, but stuff bouncing in the glove box might do it. Don't have a good water source where the boat is parked so I can't fire it up to check it but fingers crossed that does it. Definitely seems like a loose wire kind of thing, maybe I just needed to type it out.

[SilentSeven]

My 97 GT 40 does this as well. Never have figured it out.

[j2nh]

Check your grounds. Battery and motor ground. Had this happen once, visually the connections looked good, in reality the negative was loose.

[Puddle]

Well I moved the safety lanyard "fix" and had no issues yesterday, not a lot of time over 20mph but some and definitely over some rough wakes. Getting colder here so most likely the last day out for this season. Also like to note that it wasn't actually moved to the glove box that's some other wire, it had just been pulled off the switch and a couple connectors added to make it a loop. One of the connections had metal showing, my thought is it was grounding out momentarily on something back there. Battery connection is another thing I'll check when I pull the battery for the winter.