On 7/31/2020 at 5:59 AM, hunter77ah said:

If it is ITV24- check out rock auto.  They have all 16 for a little over $100.

https://www.rockauto.com/en/parts/denso,5341,spark+plug,7212

I ordered these.  They are wrong.

Here's what my motor had in it at ~380 hrs, assumed stock.

Top - motorcraft platinum CYFS 12NPG

Side - Motorcraft Platinum CYFS 12F

Uniform Solution: Ford's official service replacement part number is the Motorcraft SP-526 / SP-526X (Ford part CYFS-12-FPX).

Its a ford motor, with ford spec plugs factory.  I'm going to run the SP-526's in my 575.

There are 3 relays on the engine wiring harness near the ECM for powertrain, fuel pump, and starter.  Check those. 

I've seen something very similar happen to a 2017 Malibu 24MXZ.  In that particular case it was resolved by replacing the stereo black box controller. 

Malibu service advisory SA_03MC_080923 recommended a Viper screen software update and a USB Wetsounds black box software and DSP update for all 2023 Waksetter and M series boat and for 2024 models built in June or July of 2023.  It is not clear what the update was ment to correct or if it would help with the problem you are having.  Check with your dealer to see if your boat is affected. 

They’re a medium gray, not sure how to attach a picture   

I think that is a good idea for sure.