H6 engine Tic.

[Sailfun]

I am getting a loud ticking noise at idle when the engine is cold on my 2018 G23 with the H6 motor. I had the dealer mechanic look at it once while checking another issue and he felt it was a bit of belt noise and a non issue. It seems louder now and my warranty is ending soon. Anyone one have a similar issue?

[Scooter G]

In the old days, we used to use our ear to a long screw driver to isolate noises. Vibration was a little hard on the ear as you would probe around, but it would get you real close to the culprit. One day they came out with a probe specifically designed for narrowing it down, works great. Rattles and tics can be very deceiving to locate without some sort of probing device.

https://www.amazon.com/Lisle-52500-Mechanics-Stethoscope/dp/B0002SQYSM/ref=sr_1_6?crid=1ZF8MNGU7V4RE&keywords=sound%2Bpro be&qid=1692565659&sprefix=sound%2Bprobe%2Caps%2C2 1 3&sr=8-6&th=1

If it's getting more audible, I would narrow it down sooner than later, while still under warranty.

I think you meant to say G23, yes?

[Sailfun]

Yes it is a G23. Fixed it. The strange thing is the noise is gone once the engine warms up. Going to take a look this evening to see if I can isolate it better but no luck last time I tried.

[jpwhit]

It super hard to diagnose engine noises without being able to hear it in person and use a mechanics stethoscope. But the most common tic type noise that goes away when warm, would be a valve train issue such an a sticking or failing lifter. If the boat is under warranty, then they should fix it. Don't accept an answer such as "it's not an issue" or don't worry "it's normal".

[mpost]

I have used a long funnel to isolate some noises. large end over the ear and the small end will zero in on the area for electrical arcs and gastet leaks.

[SilentSeven]

I'd look closely for exhaust manifold leaks. They'll frequently sound like a tik tik and then change as the manifold gets to operating temp. Could also be lifters, etc, but I'd include an exhaust leak as a possibility.

[Sailfun]

Thanks everyone for suggestions. The dealer is looking at the engine today. Will let you know the outcome.

It was just the serpentine belt. Easy fix. Thankfully not a lifter.